Research mission

The Physical Metallurgy group focuses on the development of metallic and intermetallic materials for harsh environments. The investigation and optimization of materials for engines operating at high temperatures is of central interest. Therefore, outstanding high temperature stability (mechanical and microstructural) in conjunction with reasonable toughness at room temperature as well as suitable oxidation resistance are the main objectives of the research. In addition, fundamentals of contact materials for vacuum switches and the deformation behavior of high-entropy alloys under various conditions are studied in detail.

Synthesis of new materials

The synthesis of new materials is based on the following methods that are available in house:

  • melting technologies: arc melter and zone melting
  • powder metallurgy: attritor grinding mill, planetary ball mill, hot uniaxial pressing
  • heat treatments in various atmospheres

Methods of characterization

The characterization of mechanical and thermo-physical properties as well as microstructure of metallic and intermetallic materials is performed by means of:

  • standard metallographic procedures
  • mechanical testing under various loading conditions (tension, compression, cyclic, creep conditions, various atmospheres)
  • thermal analysis: thermogravimetry (TGA) and differential scanning calorimetry (DSC)
  • focused ion beam (FIB) for microscopic preparation
  • analytical scanning electron microscopy: energy-dispersive X-ray spectroscopy (EDX) and electron backscatter diffraction (EBSD)
  • X-ray diffraction (XRD)
  • 3D atom probe tomography (APT)
Microstructure analysis
Microstructure analysis
Microstructure analysis
Scanning electron microscopy
Directional solidification
Materials characterization
Materials synthesis

materials KIT, M. Breig
Materials Development
hea laube
High Entropy Alloys
phm phm
Additive Manufacturing
directional_solidification KIT, M. Breig
Directional Solidification
atome probe tomography KIT, M. Breig
Atom Probe Tomography

News

art27laube
Microstructure tailoring of Al-containing compositionally complex alloys by controlling the sequence of precipitation and ordering

We recently published our latest results on multi-phase refractory alloys with colleagues at IAM-AWP and University of Siegen in Acta Materialia. Utilizing thermodynamic calculations, a region with an ordered and a disordered phase in equilibrium was identified in the complex Ta-Mo-Ti-Cr-Al system. Preliminary work and the thermodynamic assessment suggest Al to significantly contribute to the sequence of phase separation and ordering reaction taking place. The relevant critical temperatures for phase separation and ordering were determined for two model alloys using differential scanning calorimetry and quenching experiments. The correlation of microstructure subsequent to cooling, the sequence of reactions and chemical composition was revealed. The specific two phase mockup of the microstructure can be controlled and is promising for further development to high temperature alloys.

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award
Best Presentation Award at the MRS Spring Meeting 2021

Aditya Srinivasan Tirunilai's talk on "Discontinuous Deformation of FCC High and Medium Entropy Alloys at Close to 0 K" was award best presentation of the Symposium ST04 "High Entropy Materials - From Fundamentals to Potential Applications" at MRS Spring Meeting 2021. The award comes with a $250 prize.

to his recent article
artschellert
Current Status of Research on the Oxidation Behavior of Refractory High Entropy Alloys

In this article prepared in collaboration with IAM-AWP and University of Siegen, we review the current status of research on the oxidation behavior of refractory high entropy alloys (RHEA). RHEA are considered as novel promising high-temperature materials for structural applications at ultrahigh temperatures primarily due to their attractive mechanical properties. By contrast, the oxidation behavior of RHEA has raised concern owing to pest oxidation, significant weight changes, scale spallation, or even complete oxidation at elevated temperatures. Herein, the currently available literature on high-temperature oxidation behavior of RHEA is reviewed with respect to alloy composition, mass changes, corrosion products, and scale constitution. While many RHEA indeed suffer from poor oxidation resistance similar to that of pure refractory metals, some RHEA exhibit very good protectiveness, which is attributed to the formation of either well-known protective scales such as α-Al2O3 or rarely encountered complex oxides such as CrTaO4. Thermodynamic and kinetic aspects of oxide formation and growth are discussed to understand the oxidation mechanisms typical of RHEA. Further research directions with respect to additional in-depth studies elucidating the oxidation mechanisms as well as the further consequent improvement of the oxidation resistance of RHEA are developed from the current intermediate stageof research in the field.

to Advanced Engineering Materials
senkovchen
Influence of Temperature and Plastic Strain on Deformation Mechanisms and Kink Band Formation in Homogenized HfNbTaTiZr

In this joined work of CryoMaK at ITEP and PhM, we address temperature and strain depending deformation mechanisms in the equiatomic HfNbTaTiZr. This so-called Senkov alloy serves as model system for investigating deformation of concentrated, body centered cubic solid solutions. For this purpose, compression tests in a temperature range from 77 up to 1073 K were performed and terminated at varying plastic strains for comparison of plastic deformation behavior. The microstructure and chemical homogeneity of a homogenized HfNbTaTiZr ingot were evaluated on different length scales. The compression tests reveal that test temperature significantly influences yield strength as well as work hardening behavior. Electron backscatter diffraction aids on shedding light on the acting deformation mechanisms at various temperatures and strains. It is revealed that kink band formation contributes to plastic deformation only in a certain temperature range. Additionally, the kink band misorientation angle distribution significantly differs at varying plastic strains.

to Crystals
creepobert
The Creep and Oxidation Behaviour of Pesting-Resistant (Mo,Ti)5Si3-Containing Eutectic-Eutectoid Mo-Si-Ti Alloys

This study presents novel Mo-Si-Ti alloys with the so far best achieved combination of oxidation and creep resistance among Mo-Si-based alloy systems. The dilemma of a high Ti vs. high Mo content and, thus, oxidation vs. creep resistance is resolved by profiting from a high Ti-containing Mo silicide, namely (Mo,Ti)5Si3. During casting, (Mo,Ti)5Si3 particles solidify primarily and are embedded in a fine-scaled eutectic-eutectoid matrix when the solidification is completed. These alloys exhibit a good oxidation resistance in the temperature range of 800 to 1200 °C. Additionally, solidus temperatures higher than 1900 °C provide the best creep resistance among the conventional eutectic-eutectoid Mo-Si-Ti alloys. Besides the as-cast microstructures, the oxide scales formed during oxidation and the microstructures after creep testing are analysed. A comparison with a commercially applied Ni-based superalloy reveals the competitiveness of our novel alloys.

to Metals
artobert
Microstructural and Chemical Constitution of the Oxide Scale formed on a Pesting-Resistant Mo-Si-Ti Alloy

In this publication, we analyse the root causes for the excellent oxidation resistance (pesting stability) of a eutectic Mo-Si-Ti alloy. Therefore, we investigate the microstructural and chemical constitution of the oxide scales formed in the temperature range from 800 to 1200 °C by scanning electron microscopy, grazing incident X-ray diffraction and atom probe tomography. The oxide scales are found to be mainly composed of amorphous SiO2 and rutile TiO2. Analysis of the oxide scale growth kinetics reveals linear kinetics at 800 °C up to 100 h. Thus, the oxidation mechanism is reaction-rate controlled. For longer oxidation times, the kinetics change to cubic. Interestingly, a very low oxidation rate is determined, which leads to the slow oxide scale growth. In contrast, parabolic oxidation kinetics are prevalent at 1200 °C revealing diffusion-rate control.

to Corrosion Science
artkauffmann
Dislocation-based Serrated Plastic Flow of High Entropy Alloys at Cryogenic Temperatures

In the current work, we present a phenomenological model for the occurrence of serrations at near 0 K. Our former work [Tirunilai et al., Journal of Materials Research 33 (2018) 3287-3300] established a connection to a dislocation-based mechanism. Our current research shows this mechanism relies on dislocations piled up at Lomer-Cottrell locks and their relative propensity to cross-slip out of these pile-ups, partially similar to a former hypothesis [A. Seeger in Dislocations and Mechanical Properties of Crystals (1958), John Wiley & Sons, New York, 243-330]. Links were drawn between temperature and cross-slip propensity and a corresponding model was generated. The experiments in the current work were carried out on the HEA CoCrFeMnNi, which showed a higher temperature of cryogenic serrations than any other alloy reported in literature. This wide range of possible investigation invalidated multiple hypotheses including correlation of the serrations to local thermomechanical instability, deformation twinning, martensite transformation, exponential temperature dependence of dislocation/dislocation lock density and direct stacking fault energy correlation.

to Acta Materialia
flexidsgombola
A zone melting device for the in situ observation of directional solidification using high-energy synchrotron x-rays

Together with our colleagues from Otto von Guericke University and the Helmholtz-Zentrum Geesthacht, we introduced the new state-of-the-art FlexiDS device for time-resolved in-situ investigation of directional solidification processes using high-energy synchrotron radiation. The system is a valuable addition to the infrastructure of PETRA III at DESY, being specifically designed for the use at P07 HEMS beamline. The apparatus is capable of investigating liquid-solid regions, transformations, and decompositions in various structural intermetallic materials. Moreover, we could show the wide operation range by means of sample geometry, densities and alloy compositions as well as process parameter like withdrawal rate. Even during experiments which exceed a liquidus temperature of 2000 °C, the device operated stable and satisfactory diffraction pattern were obtained. Trial tests of time-resolved processes of TiAl and FeAl alloys were presented in this work. Further detailed experimental results are published elsewhere.

to Review of Scientific Instruments
articlegombola
Microstructural Investigations of Novel High Temperature Alloys Based on NiAl-(Cr,Mo)

Previous work on calculation and validation by refinement of the thermodynamic description reported a eutectic trough in the quaternary Ni-Al-Cr-Mo system (Peng et al. in Journal of Phase Equilibria and Diffusion 37 (2016) 592-600). We present an experimentally study on NiAl-(Cr,Mo) eutectic alloys from room to liquidus temperature. The evolving morphologies were categorized into four regions with respect to the Mo concentration (I - IV). Based on in-situ X-ray diffraction experiments during solidification, it has been proven that the different compositions form due to segregation especially in region III. The influence of the segregation on the lattice parameter and thus on the lattice mismatch as well as on the orientation relationship is discussed in this study by comparing the region III alloy NiAl-9.6Cr-10.3Mo to NiAl-34Cr (I) and NiAl-10Mo (IV).

to Metals

Doctoral theses


Characterisation of the Oxidation and Creep Behaviour of Novel Mo-Si-Ti Alloys. PhD dissertation.
Obert, S.
2021, June 11. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000133636
Creep behavior of lamellar FeAl/FeAl2 alloys. PhD dissertation.
Schmitt, A.
2020, April 6. Verlag Dr. Hut
Gefüge und Eigenschaften von äquiatomaren Legierungen aus dem System Ta-Nb-Mo-Cr-Ti-Al. PhD dissertation.
Chen, H.
2020, April 7. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000118090
Gefügeentwicklung von CuCr-Kontaktwerkstoffen nach Einwirkung eines Lichtbogens im Vakuum. PhD dissertation.
Hauf, U.
2018. Karlsruher Institut für Technologie (KIT)
Der Einfluss von Fe auf Ti-haltige Mo-Si-B Legierungen: Phasenbildung, Gefüge und Kriechverhalten. PhD dissertation.
Schliephake, D.
2017. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000073537
Mechanische und oxidative Eigenschaften eutektischer Nb-Si-Cr - Legierungen. PhD dissertation.
Gang, F.
2016. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000063623
Mechanical properties and oxidation behavior of micro-alloyed iron aluminides. PhD dissertation.
Janda, D.
2015. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000046125

Publications


2021
Micro-mechanical deformation behavior of CoCrFeMnNi high-entropy alloy.
Lu, K.; Chauhan, A.; Litvinov, D.; Tirunilai, A. S.; Freudenberger, J.; Kauffmann, A.; Heilmaier, M.; Aktaa, J.
2021. Journal of materials science & technology. doi:10.1016/j.jmst.2021.04.079
Oxidation Resistance, Creep Strength and Room-Temperature Fracture Toughness of Mo–28Ti–14Si–6C–6B Alloy.
Hatakeyama, T.; Kauffmann, A.; Obert, S.; Gombola, C.; Heilmaier, M.; Yoshimi, K.
2021. Materialia, 101108. doi:10.1016/j.mtla.2021.101108
Mo-Silicide Alloys for High-Temperature Structural Applications.
Perepezko, J. H.; Krüger, M.; Heilmaier, M.
2021. Materials Performance and Characterization, 10 (2), Article: 20200183. doi:10.1520/MPC20200183
Vertical continuous compound casting of copper aluminum bilayer rods.
Greß, T.; Glück Nardi, V.; Schmid, S.; Hoyer, J.; Rizaiev, Y.; Boll, T.; Seils, S.; Tonn, B.; Volk, W.
2021. Journal of materials processing technology, 288, Art.-Nr.: 116854. doi:10.1016/j.jmatprotec.2020.116854
Characterization of the Microstructure After Composite Peening of Aluminum.
Seitz, M.; Dürrschnabel, M.; Kauffmann, A.; Kurpiers, C.; Greiner, C.; Weidenmann, K. A.
2021. Advanced engineering materials, 23 (2), Art.Nr. 2000575. doi:10.1002/adem.202000575
Microstructural and Chemical Constitution of the Oxide Scale formed on a Pesting-Resistant Mo-Si-Ti Alloy.
Obert, S.; Kauffmann, A.; Seils, S.; Boll, T.; Kauffmann-Weiss, S.; Chen, H.; Anton, R.; Heilmaier, M.
2021. Corrosion science, 178, Art.-Nr. 109081. doi:10.1016/j.corsci.2020.109081
High temperature strength retention of Cu/Nb nanolaminates through dynamic strain ageing.
Liu, Z.; Snel, J.; Boll, T.; Wang, J. Y.; Monclús, M. A.; Molina-Aldareguía, J. M.; LLorca, J.
2021. Materials science and engineering / A, 799, Article no: 140117. doi:10.1016/j.msea.2020.140117
Influence of Cold Rotary Swaging on Microstructure and Uniaxial Mechanical Behavior in Alloy 718.
Klumpp, A.; Kauffmann, A.; Seils, S.; Dietrich, S.; Schulze, V.
2021. Metallurgical and materials transactions / A. doi:10.1007/s11661-021-06371-w
Microstructure tailoring of Al-containing compositionally complex alloys by controlling the sequence of precipitation and ordering [in press].
Laube, S.; Schellert, S.; Tirunilai, A. S.; Schliephake, D.; Gorr, B.; Christ, H.-J.; Kauffmann, A.; Heilmaier, M.
2021. Acta materialia
The Effect of Al on the Formation of a CrTaO4 Layer in Refractory High Entropy Alloys Ta-Mo-Cr-Ti-xAl.
Schellert, S.; Gorr, B.; Christ, H.-J.; Pritzel, C.; Laube, S.; Kauffmann, A.; Heilmaier, M.
2021. Oxidation of metals. doi:10.1007/s11085-021-10046-7
Deformation mechanisms of CoCrFeMnNi high-entropy alloy under low-cycle-fatigue loading.
Lu, K.; Chauhan, A.; Tirunilai, A. S.; Freudenberger, J.; Kauffmann, A.; Heilmaier, M.; Aktaa, J.
2021. Acta materialia, Art.-Nr.: 117089. doi:10.1016/j.actamat.2021.117089
Quantitative Phase Prediction in Dual-Phase High-Entropy Alloys: Computationally Aided Parametric Approach.
Singh Negi, A.; Sourav, A.; Heilmaier, M.; Biswas, S.; Thangaraju, S.
2021. Physica Status Solidi (B) Basic Research. doi:10.1002/pssb.202100106
Temperature Resistance of Mo3Si: Phase Stability, Microhardness, and Creep Properties.
Kauss, O.; Obert, S.; Bogomol, I.; Wablat, T.; Siemensmeyer, N.; Naumenko, K.; Krüger, M.
2021. Metals, 11 (4), Article no: 564. doi:10.3390/met11040564
Microcantilever Fracture Tests on Eutectic NiAl‐Cr(Mo) in‐situ Composites.
Gabel, S.; Giese, S.; Merle, B.; Sprenger, I.; Heilmaier, M.; Neumeier, S.; Bitzek, E.; Göken, M.
2021. Advanced engineering materials, Art.-Nr. 202001464. doi:10.1002/adem.202001464
Current Status of Research on the Oxidation Behavior of Refractory High Entropy Alloys.
Gorr, B.; Schellert, S.; Müller, F.; Christ, H.-J.; Kauffmann, A.; Heilmaier, M.
2021. Advanced engineering materials, Article no: 2001047. doi:10.1002/adem.202001047
Influence of Temperature and Plastic Strain on Deformation Mechanisms and Kink Band Formation in Homogenized HfNbTaTiZr.
Chen, H.; Hanemann, T.; Seils, S.; Schliephake, D.; Tirunilai, A. S.; Heilmaier, M.; Weiss, K.-P.; Kauffmann, A.
2021. Crystals, 11 (2), 81. doi:10.3390/cryst11020081
The Creep and Oxidation Behaviour of Pesting-Resistant -Containing Eutectic-Eutectoid Mo-Si-Ti Alloys.
Obert, S.; Kauffmann, A.; Pretzler, R.; Schliephake, D.; Hinrichs, F.; Heilmaier, M.
2021. Metals, 11 (1), Art.-Nr.: 169. doi:10.3390/met11010169
Superior low-cycle fatigue properties of CoCrNi compared to CoCrFeMnNi.
Lu, K.; Chauhan, A.; Walter, M.; Tirunilai, A. S.; Schneider, M.; Laplanche, G.; Freudenberger, J.; Kauffmann, A.; Heilmaier, M.; Aktaa, J.
2021. Scripta materialia, 194, Art.-Nr.: 113667. doi:10.1016/j.scriptamat.2020.113667
2020
Oxidation behaviour of NiAl intermetallics with embedded Cr and Mo.
Geramifard, G.; Gombola, C.; Franke, P.; Seifert, H. J.
2020. Corrosion science, 177, Art. Nr.: 108956. doi:10.1016/j.corsci.2020.108956
Origins of strength and plasticity in the precious metal based High-Entropy Alloy AuCuNiPdPt.
Thiel, F.; Geissler, D.; Nielsch, K.; Kauffmann, A.; Seils, S.; Heilmaier, M.; Utt, D.; Albe, K.; Motylenko, M.; Rafaja, D.; Freudenberger, J.
2020. Acta materialia, 185, 400–411. doi:10.1016/j.actamat.2019.12.020
Microstructure, mechanical behaviour and strengthening mechanisms in Hastelloy X manufactured by electron beam and laser beam powder bed fusion.
Karapuzha, A. S.; Fraser, D.; Schliephake, D.; Dietrich, S.; Zhu, Y.; Wu, X.; Huang, A.
2020. Journal of alloys and compounds, Art.-Nr.: 158034. doi:10.1016/j.jallcom.2020.158034
Intensive processing optimization for achieving strong and ductile Al-Mn-Mg-Sc-Zr alloy produced by selective laser melting.
Bayoumy, D.; Schliephake, D.; Dietrich, S.; Wu, X. H.; Zhu, Y. M.; Huang, A. J.
2020. Materials and design, 198, Art.Nr. 109317. doi:10.1016/j.matdes.2020.109317
Dislocation-based Serrated Plastic Flow of High Entropy Alloys at Cryogenic Temperatures.
Tirunilai, A. S.; Hanemann, T.; Weiss, K.-P.; Freudenberger, J.; Heilmaier, M.; Kauffmann, A.
2020. Acta materialia, 200, 980–991. doi:10.1016/j.actamat.2020.09.052
A zone melting device for the in situ observation of directional solidification using high-energy synchrotron x rays editors-pick.
Gombola, C.; Hasemann, G.; Kauffmann, A.; Sprenger, I.; Laube, S.; Schmitt, A.; Gang, F.; Bolbut, V.; Oehring, M.; Blankenburg, M.; Schell, N.; Staron, P.; Pyczak, F.; Krüger, M.; Heilmaier, M.
2020. Review of scientific instruments, 91 (9), Art.Nr. 093901. doi:10.1063/5.0019020
Effect of Y Additions on the Oxidation Behaviour of Novel Refractory High-Entropy Alloy NbMoCrTiAl at 1000 °C in Air.
Müller, F.; Gorr, B.; Christ, H.-J.; Chen, H.; Kauffmann, A.; Heilmaier, M.
2020. Oxidation of metals, 94 (1-2), 147–163. doi:10.1007/s11085-020-09983-6
High-temperature low cycle fatigue behavior of an equiatomic CoCrFeMnNi high-entropy alloy.
Lu, K.; Chauhan, A.; Litvinov, D.; Walter, M.; Tirunilai, A. S.; Freudenberger, J.; Kauffmann, A.; Heilmaier, M.; Aktaa, J.
2020. Materials science and engineering / A, 791, Article: 139781. doi:10.1016/j.msea.2020.139781
Formation of complex intermetallic phases in novel refractory high-entropy alloys NbMoCrTiAl and TaMoCrTiAl: Thermodynamic assessment and experimental validation.
Müller, F.; Gorr, B.; Christ, H.-J.; Chen, H.; Kauffmann, A.; Laube, S.; Heilmaier, M.
2020. Journal of alloys and compounds, Article no: 155726. doi:10.1016/j.jallcom.2020.155726
Creep of an oxidation resistant coated Mo-9Si-8B alloy.
Gombola, C.; Schliephake, D.; Heilmaier, M.; Perepezko, J. H.
2020. Intermetallics, 120, 106743. doi:10.1016/j.intermet.2020.106743
Breakdown of Varvenne scaling in (AuNiPdPt) Cu high-entropy alloys.
Thiel, F.; Utt, D.; Kauffmann, A.; Nielsch, K.; Albe, K.; Heilmaier, M.; Freudenberger, J.
2020. Scripta materialia, 181, 15–18. doi:10.1016/j.scriptamat.2020.02.007
Temperature dependent strengthening contributions in austenitic and ferritic ODS steels.
Seils, S.; Kauffmann, A.; Hinrichs, F.; Schliephake, D.; Boll, T.; Heilmaier, M.
2020. Materials science and engineering / A, 786, Article: 139452. doi:10.1016/j.msea.2020.139452
Solid solution strengthening and deformation behavior of single-phase Cu-base alloys under tribological load.
Laube, S.; Kauffmann, A.; Ruebeling, F.; Freudenberger, J.; Heilmaier, M.; Greiner, C.
2020. Acta materialia, 185, 300–308. doi:10.1016/j.actamat.2019.12.005
Characterisation of the oxidation and creep behaviour of novel Mo-Si-Ti alloys.
Obert, S.; Kauffmann, A.; Heilmaier, M.
2020. Acta materialia, 184, 132–142. doi:10.1016/j.actamat.2019.11.045
A new strategy to intrinsically protect refractory metal based alloys at ultra high temperatures.
Gorr, B.; Müller, F.; Schellert, S.; Christ, H.-J.; Chen, H.; Kauffmann, A.; Heilmaier, M.
2020. Corrosion science, 166, Art. Nr.: 108475. doi:10.1016/j.corsci.2020.108475
Controlling crystallographic ordering in Mo–Cr–Ti–Al high entropy alloys to enhance ductility.
Laube, S.; Chen, H.; Kauffmann, A.; Schellert, S.; Müller, F.; Gorr, B.; Müller, J.; Butz, B.; Christ, H.-J.; Heilmaier, M.
2020. Journal of alloys and compounds, 823, Article No.153805. doi:10.1016/j.jallcom.2020.153805
Microstructural properties and peritectic reactions in a binary Co–Sn alloy by means of scanning electron microscopy and atom probe tomography.
Khushaim, M.; Alahmari, F.; Kattan, N.; Chassaing, D.; Boll, T.
2020. Materials Research Express, 7 (8), Art.Nr. 086508. doi:10.1088/2053-1591/abad04
Microstructural Investigations of Novel High Temperature Alloys Based on NiAl-(Cr,Mo).
Gombola, C.; Kauffmann, A.; Geramifard, G.; Blankenburg, M.; Heilmaier, M.
2020. Metals, 10 (7), Art. Nr.: 961. doi:10.3390/met10070961
On the chemical and microstructural requirements for the pesting-resistance of Mo-Si-Ti alloys.
Obert, S.; Kauffmann, A.; Seils, S.; Schellert, S.; Weber, M.; Gorr, B.; Christ, H.-J.; Heilmaier, M.
2020. Journal of materials research and technology, 9 (4), 8556–8567. doi:10.1016/j.jmrt.2020.06.002
Microstructural changes in CoCrFeMnNi under mild tribological load.
Dollmann, A.; Kauffmann, A.; Heilmaier, M.; Haug, C.; Greiner, C.
2020. Journal of materials science, 55 (26), 12353–12372. doi:10.1007/s10853-020-04806-0
Effect of Water Vapor on the Oxidation Behavior of the Eutectic High‐Temperature Alloy Mo‐20Si‐52.8Ti.
Weber, M.; Gorr, B.; Christ, H.-J.; Obert, S.; Kauffmann, A.; Heilmaier, M.
2020. Advanced engineering materials, 22 (7), Art. Nr.: 2000219. doi:10.1002/adem.202000219
Magnetron sputtered silicon coatings as oxidation protection for Mo‐based alloys.
Anton, R.; Laska, N.; Schulz, U.; Obert, S.; Heilmaier, M.
2020. Advanced engineering materials, 22 (7), Article Nr.: 2000218. doi:10.1002/adem.202000218
Comparison of cryogenic deformation of the concentrated solid solutions CoCrFeMnNi, CoCrNi and CoNi.
Tirunilai, A. S.; Hanemann, T.; Reinhart, C.; Tschan, V.; Weiss, K.-P.; Laplanche, G.; Freudenberger, J.; Heilmaier, M.; Kauffmann, A.
2020. Materials science and engineering / A, 783, Art. Nr.: 139290. doi:10.1016/j.msea.2020.139290
2019
On the oxidation mechanism of refractory high entropy alloys.
Müller, F.; Gorr, B.; Christ, H.-J.; Müller, J.; Butz, B.; Chen, H.; Kauffmann, A.; Heilmaier, M.
2019. Corrosion science, 159, Article: 108161. doi:10.1016/j.corsci.2019.108161
Crystallographic ordering in a series of Al-containing refractory high entropy alloys Ta-Nb-Mo-Cr-Ti-Al.
Chen, H.; Kauffmann, A.; Seils, S.; Boll, T.; Liebscher, C. H.; Harding, I.; Kumar, K. S.; Szabo, D. V.; Schlabach, S.; Kauffmann-Weiss, S.; Müller, F.; Gorr, B.; Christ, H.-J.; Heilmaier, M.
2019. Acta materialia. doi:10.1016/j.actamat.2019.07.001
Influence of SiC/Silica and Carbon/Silica Interfaces on the High‐Temperature Creep of Silicon Oxycarbide‐Based Glass Ceramics : A Case Study.
Stabler, C.; Schliephake, D.; Heilmaier, M.; Rouxel, T.; Kleebe, H.; Narisawa, M.; Riedel, R.; Ionescu, E.
2019. Advanced engineering materials, 21 (6), Art. Nr.: 1800596. doi:10.1002/adem.201800596
Microstructural evolution during creep of lamellar eutectoid and off-eutectoid FeAl/FeAl2 alloys.
Schmitt, A.; Kumar, K. S.; Kauffmann, A.; Heilmaier, M.
2019. Intermetallics, 107, 116–125. doi:10.1016/j.intermet.2019.01.015
High-pressure torsion driven mechanical alloying of CoCrFeMnNi high entropy alloy.
Kilmametov, A.; Kulagin, R.; Mazilkin, A.; Seils, S.; Boll, T.; Heilmaier, M.; Hahn, H.
2019. Scripta materialia, 158, 29–33. doi:10.1016/j.scriptamat.2018.08.031
Constitution, oxidation and creep of eutectic and eutectoid Mo-Si-Ti alloys.
Schliephake, D.; Kauffmann, A.; Cong, X.; Gombola, C.; Azim, M.; Gorr, B.; Christ, H.-J.; Heilmaier, M.
2019. Intermetallics, 104, 133–142. doi:10.1016/j.intermet.2018.10.028
Aluminide Coatings on Mo-Si-B-Ti-Fe Alloy.
Walsh, Z.; Kasnakjian, S.; Gallegos, L.; Patil, D.; Ravi, V.; Shliephake, D.; Heilmaier, M.
2019. International Corrosion Conference series, March, Art.-Nr. 13501
Precipitation behaviour and mechanical properties of a novel AlMoTaTi complex concentrated alloy.
Schliephake, D.; Medvedev, A. E.; Imran, M. K.; Obert, S.; Fabijanic, D.; Heilmaier, M.; Molotnikov, A.; Wu, X.
2019. Scripta materialia, 173, 16–20. doi:10.1016/j.scriptamat.2019.07.033
2018
Contribution of Lattice Distortion to Solid Solution Strengthening in a Series of Refractory High Entropy Alloys.
Chen, H.; Kauffmann, A.; Laube, S.; Choi, I.-C.; Schwaiger, R.; Huang, Y.; Lichtenberg, K.; Müller, F.; Gorr, B.; Christ, H.-J.; Heilmaier, M.
2018. Metallurgical and materials transactions / A, 49 (3), 772–781. doi:10.1007/s11661-017-4386-1
Phase Evolution in and Creep Properties of Nb-Rich Nb-Si-Cr Eutectics.
Gang, F.; Kauffmann, A.; Heilmaier, M.
2018. Metallurgical and materials transactions / A, 49 (3), 763–771. doi:10.1007/s11661-017-4367-4
Optical and Electrical Investigation of High-Current Arcing Modes and Correlation with Contact Microstructure after Single Current Interruption.
Feilbach, A.; Hinrichsen, V.; Hauf, U.; Heilmaier, M.; Boening, M.; Müller, F. E. H.
2018. Proceedings of the 28th International Symposium on Discharges and Electrical Insulation in Vacuum: Greifswald, Germany, 23rd-28th September 2018. Volume 2., 169–172, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/DEIV.2018.8537042
Development of Oxidation Resistant Refractory High Entropy Alloys for High Temperature Applications: Recent Results and Development Strategy.
Gorr, B.; Mueller, F.; Christ, H.-J.; Chen, H.; Kauffmann, A.; Schweiger, R.; Szabo, D. V.; Heilmaier, M.
2018. 147th Annual Meeting & Exhibition Supplemental Proceedings (TMS), Phoenix, Arizona, March 11-15, 2018, 647–659, Springer. doi:10.1007/978-3-319-72526-0_61
Peculiarities of deformation of CoCrFeMnNi at cryogenic temperatures.
Tirunilai, A. S.; Sas, J.; Weiss, K.-P.; Chen, H.; Szabo, D. V.; Schlabach, S.; Haas, S.; Geissler, D.; Freudenberger, J.; Heilmaier, M.; Kauffmann, A.
2018. Journal of materials research, 1–14. doi:10.1557/jmr.2018.252
Influence of work-hardening on fatigue crack growth, effective threshold and crack opening behavior in the nickel-based superalloy Inconel 718.
Klumpp, A.; Maier, S.; Chen, H.; Fotouhi, M.; Schneider, R.; Dietrich, S.; Lang, K.-H.; Schulze, V.
2018. International journal of fatigue, 116, 257–267. doi:10.1016/j.ijfatigue.2018.06.033
2017
Tensile creep of miniaturized specimens.
Luan, L.; Riesch-Oppermann, H.; Heilmaier, M.
2017. Journal of materials research, 32 (24), 4563–4572. doi:10.1557/jmr.2017.414
Microstructure Formation and Resistivity Change in CuCr during Rapid Solidification.
Hauf, U.; Kauffmann, A.; Kauffmann-Weiss, S.; Feilbach, A.; Boening, M.; Mueller, F. E. H.; Hinrichsen, V.; Heilmaier, M.
2017. Metals, 7 (11), Art.Nr. 478. doi:10.3390/met7110478
The effect of the ternary elements B, Ti, Cr, Cu, and Mo on fully lamellar FeAl + FeAl2 alloys.
Li, X.; Schmitt, A.; Heilmaier, M.; Stein, F.
2017. Journal of alloys and compounds, 722, 219–228. doi:10.1016/j.jallcom.2017.06.106
Combinatorial exploration of the high entropy alloy system Co-Cr-Fe-Mn-Ni.
Kauffmann, A.; Stüber, M.; Leiste, H.; Ulrich, S.; Schlabach, S.; Szabo, D. V.; Seils, S.; Gorr, B.; Chen, H.; Seifert, H.-J.; Heilmaier, M.
2017. Surface and coatings technology, 325, 174–180. doi:10.1016/j.surfcoat.2017.06.041
Optimisation of selective laser melting parameters for the Ni-based superalloy IN-738 LC using Doehlert’s design.
Perevoshchikova, N.; Rigaud, J.; Sha, Y.; Heilmaier, M.; Finnin, B.; Labelle, E.; Wu, X.
2017. Rapid prototyping journal, 23 (5), 881–892. doi:10.1108/RPJ-04-2016-0063
Effect of Ti addition on the thermal expansion anisotropy of Mo₅Si₃.
Azim, M. A.; Christ, H.-J.; Gorr, B.; Kowald, T.; Lenchuk, O.; Albe, K.; Heilmaier, M.
2017. Acta materialia, 132, 25–34. doi:10.1016/j.actamat.2017.02.066
High-Resolution Studies on Nanoscaled Ni/YSZ Anodes.
Szász, J.; Seils, S.; Klotz, D.; Störmer, H.; Heilmaier, M.; Gerthsen, D.; Yokokawa, H.; Ivers-Tiffée, E.
2017. Chemistry of materials, 29 (12), 5113–5123. doi:10.1021/acs.chemmater.7b00360
Coarsening kinetics of lamellar microstructures : Experiments and simulations on a fully-lamellar Fe-Al in situ composite.
Li, X.; Bottler, F.; Spatschek, R.; Schmitt, A.; Heilmaier, M.; Stein, F.
2017. Acta materialia, 127, 230–243. doi:10.1016/j.actamat.2017.01.041
Phase-field simulation of the microstructure evolution in the eutectic NiAl-34Cr system.
Kellner, M.; Sprenger, I.; Steinmetz, P.; Hötzer, J.; Nestler, B.; Heilmaier, M.
2017. Computational materials science, 128, 379–387. doi:10.1016/j.commatsci.2016.11.049
Interdependency of test environment and current breaking capacity of a model vacuum switch.
Feilbach, A.; Menne, H.; Hinrichsen, V.; Hauf, U.; Heilmaier, M.; Böning, M.; Müller, F. E. H.
2017. Proceedings of the 63rd IEEE Holm Conference on Electrical Contacts, Denver, Colorado, USA, 10th - 13th September 2017, 258–263, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/HOLM.2017.8088097
Effect of microalloying with silicon on high temperature oxidation resistance of novel refractory high-entropy alloy Ta-Mo-Cr-Ti-Al.
Müller, F.; Gorr, B.; Christ, H.-J.; Chen, H.; Kauffmann, A.; Heilmaier, M.
2017. Materials at high temperatures, 35 (1-3), 168–176. doi:10.1080/09603409.2017.1389115
Effect of Ti content and nitrogen on the high-temperature oxidation behavior of (Mo,Ti)5Si3.
Azim, M. A.; Gorr, B.; Christ, H.-J.; Lenchuk, O.; Albe, K.; Schliephake, D.; Heilmaier, M.
2017. Intermetallics, 90, 103–112. doi:10.1016/j.intermet.2017.05.023
Creep of binary Fe-Al alloys with ultrafine lamellar microstructures.
Schmitt, A.; Kumar, K. S.; Kauffmann, A.; Li, X.; Stein, F.; Heilmaier, M.
2017. Intermetallics, 90, 180–187. doi:10.1016/j.intermet.2017.07.016
Characterization of Oxidation Kinetics of Mo-Si-B-Based Materials.
Azim, M. A.; Gorr, B.; Christ, H.-J.; Heilmaier, M.; Koch, U.; Engelhard, M.
2017. Oxidation of metals, 87 (1-2), 89–108. doi:10.1007/s11085-016-9659-3
Face Centred Cubic Multi-Component Equiatomic Solid Solutions in the Au-Cu-Ni-Pd-Pt System.
Freudenberger, J.; Rafaja, D.; Geissler, D.; Giebeler, L.; Ullrich, C.; Kauffmann, A.; Heilmaier, M.; Nielsch, K.
2017. Metals, 7 (4), Art. Nr.: 135. doi:10.3390/met7040135
Enhanced Oxidation Resistance of Mo-Si-B-Ti Alloys by Pack Cementation.
Schliephake, D.; Gombola, C.; Kauffmann, A.; Heilmaier, M.; Perepezko, J. H.
2017. Oxidation of metals, 88 (SI, 3-4), 267–277. doi:10.1007/s11085-017-9730-8
High-Temperature Oxidation Behavior of Refractory High-Entropy Alloys : Effect of Alloy Composition.
Gorr, B.; Müller, F.; Azim, M.; Christ, H.-J.; Müller, T.; Chen, H.; Kauffmann, A.; Heilmaier, M.
2017. Oxidation of metals, 88 (3-4), 339–349. doi:10.1007/s11085-016-9696-y
2016
Nanostructure evolution in ODS steels under ion irradiation.
Rogozhkin, S.; Bogachev, A.; Korchuganova, O.; Nikitin, A.; Orlov, N.; Aleev, A.; Zaluzhnyi, A.; Kozodaev, M.; Kulevoy, T.; Chalykh, B.; Lindau, R.; Hoffmann, J.; Möslang, A.; Vladimirov, P.; Klimenkov, M.; Heilmaier, M.; Wagner, J.; Seils, S.
2016. Nuclear materials and energy, 9, 66–74. doi:10.1016/j.nme.2016.06.011
High-temperature creep behavior of a SiOC glass ceramic free of segregated carbon.
Stabler, C.; Roth, F.; Narisawa, M.; Schliephake, D.; Heilmaier, M.; Lauterbach, S.; Kleebe, H.-J.; Riedel, R.; Ionescu, E.
2016. Journal of the European Ceramic Society, 36 (15), 3747–3753. doi:10.1016/j.jeurceramsoc.2016.04.015
Validation of the applicability of a creep model for directionally solidified eutectics with a lamellar microstructure.
Albiez, J.; Sprenger, I.; Weygand, D.; Heilmaier, M.; Böhlke, T.
2016. Proceedings in applied mathematics and mechanics, 16 (1), 297–298. doi:10.1002/pamm.201610137
Al-Ti Particulate Composite : Processing and Studies on Particle Twinning, Microstructure, and Thermal Stability.
Yadav, D.; Bauri, R.; Kauffmann, A.; Freudenberger, J.
2016. Metallurgical and materials transactions / A, 47 (8), Art.Nr. 4226–4238. doi:10.1007/s11661-016-3597-1
Influence of post heat treatments on anisotropy of mechanical behaviour and microstructure of Hastelloy-X parts produced by selective laser melting.
Tomus, D.; Tian, Y.; Rometsch, P. A.; Heilmaier, M.; Wu, X.
2016. Materials science and engineering / A, 667, 42–53. doi:10.1016/j.msea.2016.04.086
Physically motivated model for creep of directionally solidified eutectics evaluated for the intermetallic NiAl-9Mo.
Albiez, J.; Sprenger, I.; Seemüller, C.; Weygand, D.; Heilmaier, M.; Böhlke, T.
2016. Acta materialia, 110, 377–385. doi:10.1016/j.actamat.2016.02.024
Microstructure and mechanical properties at elevated temperatures of a new Al-containing refractory high-entropy alloy Nb-Mo-Cr-Ti-Al.
Chen, H.; Kauffmann, A.; Gorr, B.; Schliephake, D.; Seemüller, C.; Wagner, J. N.; Christ, H.-J.; Heilmaier, M.
2016. Journal of alloys and compounds, 661, 206–215. doi:10.1016/j.jallcom.2015.11.050
Effect of strain-rate on the deformation response of D0₃-ordered Fe₃Al.
Janda, D.; Ghassemi-Armaki, H.; Bruder, E.; Hockauf, M.; Heilmaier, M.; Kumar, K. S.
2016. Acta materialia, 103, 909–918. doi:10.1016/j.actamat.2015.11.002
Thermal stability of electrical and mechanical properties of cryo-drawn Cu and CuZr wires.
Kauffmann, A.; Geissler, D.; Freudenberger, J.
2016. Materials Science and Engineering: A, 651, 567–573. doi:10.1016/j.msea.2015.10.119
MIM for HT turbine parts : Gas-atomized versus mechanically milled Nb-si alloy powder.
Mulser, M.; Hartwig, T.; Seemüller, C.; Heilmaier, M.; Adkins, N.; Wickins, M.
2016. World Powder Metallurgy 2016 Congress and Exhibition, Hamburg, Germany, 9th - 13th October 2016, European Powder Metallurgy Association (EPMA)
Investigation of current breaking capacity of vacuum interrupters with focus on contact material properties with the help of a reference model vacuum circuit breaker.
Feilbach, A.; Hauf, U.; Böning, M.; Hinrichsen, V.; Heilmaier, M.; Müller, F. E. H.
2016. 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV), Suzhou, China, 18–23 September 2016. Ed.: R. Boxman, 1–4, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/DEIV.2016.7748691
The Al-Rich Part of the Fe-Al Phase Diagram.
Li, X.; Scherf, A.; Heilmaier, M.; Stein, F.
2016. Journal of phase equilibria and diffusion, 37 (2), 162–173. doi:10.1007/s11669-015-0446-7
Investigation of the heat affected volume of CuCr contact material for vacuum interrupters.
Hauf, U.; Feilbach, A.; Böning, M.; Heilmaier, M.; Hinrichsen, V.; Müller, F. E. H.
2016. 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV), Suzhou, China, 18-23 Sept. 2016, 1–4, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/DEIV.2016.7748695
Synthesis and high-temperature creep behavior of a SiLuOC-based glass-ceramic.
Stabler, C.; Seemüller, C.; Choudhary, A.; Heilmaier, M.; Lauterbach, S.; Kleebe, H.-J.; Ionescu, E.
2016. Journal of the Ceramic Society of Japan, 124 (10), 1006–1012. doi:10.2109/jcersj2.16101
Microstructure Variations and Creep Properties of Novel High Temperature V-Si-B Materials.
Krüger, M.; Bolbut, V.; Gang, F.; Hasemann, G.
2016. JOM, 68 (11), 2811–2816. doi:10.1007/s11837-016-2096-6
High temperature oxidation behavior of an equimolar refractory metal-based alloy 20Nb-20Mo-20Cr-20Ti-20Al with and without Si addition.
Gorr, B.; Mueller, F.; Christ, H.-J.; Mueller, T.; Chen, H.; Kauffmann, A.; Heilmaier, M.
2016. Journal of alloys and compounds, 688, Part B, 468–477. doi:10.1016/j.jallcom.2016.07.219
Orientation relationship of eutectoid FeAl and FeAl₂.
Scherf, A.; Kauffmann, A.; Kauffmann-Weiss, S.; Scherer, T.; Li, X.; Stein, F.; Heilmaier, M.
2016. Journal of applied crystallography, 49 (2), 442–449. doi:10.1107/S1600576716000911
In Situ Study of the Influence of Nickel on the Phase Transformation Kinetics in Austempered Ductile Iron.
Saal, P.; Meier, L.; Li, X.; Hofmann, M.; Hoelzel, M.; Wagner, J. N.; Volk, W.
2016. Metallurgical and materials transactions / A, 47 (2), 661–671. doi:10.1007/s11661-015-3261-1
In-situ neutron diffraction during biaxial deformation.
Van Petegem, S.; Wagner, J.; Panzner, T.; Upadhyay, M. V.; Trang, T. T. T.; Van Swygenhoven, H.
2016. Acta Materialia, 105, 404–416. doi:10.1016/j.actamat.2015.12.015
Microstructure Evolution in a New Refractory High-Entropy Alloy W-Mo-Cr-Ti-Al.
Gorr, B.; Azim, M.; Christ, H.-J.; Chen, H.; Szabo, D. V.; Kauffmann, A.; Heilmaier, M.
2016. Metallurgical and Materials Transactions A, 47, 961–970. doi:10.1007/s11661-015-3246-0
2015
One-dimensional simulation of the creep behavior of directionally solidified NiAl-9Mo.
Albiez, J.; Sprenger, I.; Heilmaier, M.; Böhlke, T.
2015. Proceedings in applied mathematics and mechanics, 15 (1), 269–270. doi:10.1002/pamm.201510125
Oxidation behavior of pack-cemented Si-B oxidation protection coatings for Mo-Si-B alloys at 1300°C.
Lange, A.; Heilmaier, M.; Sossamann, T. A.; Perepezko, J. H.
2015. Surface and coatings technology, 266, 57–63. doi:10.1016/j.surfcoat.2015.02.015
Early cluster formation during rapid cooling of an Al-Cu-Mg alloy: In situ small-angle X-ray scattering.
Schloth, P.; Menzel, A.; Fife, J. L.; Wagner, J. N.; Van Swygenhoven, H.; J.-M. Drezet.
2015. Scripta Materialia, 108, 56–59. doi:10.1016/j.scriptamat.2015.06.015
An APT investigation of an amorphous Cr-B-C thin film.
Boll, T.; Thuvander, M.; Koch, S.; Wagner, J. N.; Nedfors, N.; Jansson, U.; Stiller, K.
2015. Ultramicroscopy, 159 (2), 217–222. doi:10.1016/j.ultramic.2015.01.001
Microstructure and Phase Transformation Temperatures of Two-Phase FeAl (B2) + FeAl2 Alloys.
Li, X.; Palm, M.; Scherf, A.; Janda, D.; Heilmaier, M.; Stein, F.
2015. Advanced structural and functional intermetallic-based alloys : November 30 - December 5, 2014, Boston, Massachusetts, USA ; [Symposium YY: Advanced Structural and Functional Intermetallic-Based Alloys ; held at the 2014 MRS fall meeting] . Ed.: I. Baker, 55–60, Materials Research Society. doi:10.1557/opl.2014.965
Mechanisms of oxide scale formation on yttrium-alloyed Mo-Si-B containing fine-grained microstructure.
Majumdar, S.; Dönges, B.; Gorr, B.; Christ, H.-J.; Schliephake, D.; Heilmaier, M.
2015. Corrosion science, 90, 76–88. doi:10.1016/j.corsci.2014.09.017
Phase equilibria, microstructure, and high temperature oxidation resistance of novel refractory high-entropy alloys.
Gorr, B.; Azim, M.; Christ, H.-J.; Mueller, T.; Schliephake, D.; Heilmaier, M.
2015. Journal of alloys and compounds, 624, 270–278. doi:10.1016/j.jallcom.2014.11.012
The influence of microstructural features on the electrical conductivity of solid phase sintered CuCr composites.
Klinski-Wetzel, K. von; Kowanda, C.; Heilmaier, M.; Mueller, F. E. H.
2015. Journal of alloys and compounds, 631, 237–247. doi:10.1016/j.jallcom.2014.12.249
Experimental and Numerical Investigation on the Phase Separation Affected by Cooling Rates and Marangoni Convection in Cu-Cr Alloys.
Wang, F.; Klinski-Wetzel, K. von; Mukherjee, R.; Nestler, B.; Heilmaier, M.
2015. Metallurgical and materials transactions / A, 46 (4), 1756–1766. doi:10.1007/s11661-015-2745-3
Oxidation Behavior of Binary Aluminium-Rich Fe-Al Alloys with a Fine-Scaled, Lamellar Microstructure.
Scherf, A.; Janda, D.; Baghaie Yazdi, M.; Li, X.; Stein, F.; Heilmaier, M.
2015. Oxidation of metals, 83 (5-6), 559–574. doi:10.1007/s11085-015-9535-6
Magnetron Sputtered Mo(Six,Al[1-x])2 Oxidation Protection Coatings for Mo-Si-B Alloys.
Lange, A.; Braun, R.; Heilmaier, M.
2015. Oxidation of Metals, 84 (1-2), 91–104. doi:10.1007/s11085-015-9545-4
Creep Resistance and Oxidation Behavior of Novel Mo-Si-B-Ti Alloys.
Azim, M. A.; Schliephake, D.; Hochmuth, C.; Gorr, B.; Christ, H.-J.; Glatzel, U.; Heilmaier, M.
2015. JOM, 67 (11), 2621–2628. doi:10.1007/s11837-015-1560-z
Influence of Vanadium on the Oxidation Resistance of the Intermetallic Phase Nb5Si3.
Gang, F.; Klinski-Wetzel, K. von; Wagner, J. N.; Heilmaier, M.
2015. Oxidation of metals, 83 (1-2), 119–132. doi:10.1007/s11085-014-9510-7
2014
High-temperature oxidation behavior of Mo-Si-B-based and Co-Re-Cr-based alloys.
Gorr, B.; Wang, L.; Burk, S.; Azim, M.; Majumdar, S.; Christ, H.-J.; Mukherji, D.; Rösler, J.; Schliephake, D.; Heilmaier, M.
2014. Intermetallics, 48, 34–43. doi:10.1016/j.intermet.2013.10.008
Correlation between microstructure and properties of fine grained Mo-Mo3Si-Mo5SiB2 alloys.
Krüger, M.; Jain, P.; Kumar, K. S.; Heilmaier, M.
2014. Intermetallics, 48, 10–18. doi:10.1016/j.intermet.2013.10.025
Influence of zirconium content on microstructure and creep properties of Mo-9Si-8B alloys.
Hochmuth, C.; Schliephake, D.; Völkl, R.; Heilmaier, M.; Glatzel, U.
2014. Intermetallics, 48, 3–9. doi:10.1016/j.intermet.2013.08.017
Influence of the processing technique on the properties of Nb-Si intermetallic composites for high temperature applications processed by MIM and HIP.
Mulser, M.; Hartwig, T.; Seemüller, C.; Heilmaier, M.; Adkins, N.; Wickins, M.
2014. Advances in powder metallurgy & particulate Materials - 2014 : proceedings of the 2014 International Conference on Powder Metallurgy & Particulate Materials sponsored by the Metal Powder Industries Federation, May 18 - 22, Orlando, FL. Ed.: R.A. Chernenkoff, 04/8–04/16, Metal Powder Industries Federation
Hall-Petch Breakdown at Elevated Temperatures.
Schneibel, J. H.; Heilmaier, M.
2014. Materials transactions, 55 (1), 44–51. doi:10.2320/matertrans.MA201309
High-Temperature Creep and Oxidation Behavior of Mo-Si-B Alloys with High Ti Contents.
Schliephake, D.; Azim, M.; Klinski-Wetzel, K. von; Gorr, B.; Christ, H.-J.; Bei, H.; George, E. P.; Heilmaier, M.
2014. Metallurgical and materials transactions / A, 45 (3), 1102–1111. doi:10.1007/s11661-013-1944-z
Influence of Powder Metallurgical Processing Routes on Phase Formations in a Multicomponent NbSi-Alloy.
Seemüller, C.; Hartwig, T.; Mulser, M.; Adkins, N.; Wickins, M.; Heilmaier, M.
2014. JOM, 66 (9), 1900–1907. doi:10.1007/s11837-014-1096-7
High-Temperature Creep Behavior of SiOC Glass-Ceramics: Influence of Network Carbon Versus Segregated Carbon.
Ionescu, E.; Balan, C.; Kleebe, H.-J.; Müller, M. M.; Guillon, O.; Schliephake, D.; Heilmaier, M.; Riedel, R.
2014. Journal of the American Ceramic Society, 97 (12), 3935–3942. doi:10.1111/jace.13206
2013
Influence of microstructure and processing on mechanical properties of advanced Nb-silicide alloys.
Seemüller, C.; Heilmaier, M.; Hartwig, T.; Mulser, M.; Adkins, N.; Wickins, M.
2013. MRS online proceedings library, 1516, 317–322. doi:10.1557/opl.2012.1655
Effect of Ti (Macro-) Alloying on the High-Temperature Oxidation Behavior of Ternary Mo–Si–B Alloys at 820–1,300 °C.
Azimovna Azim, M.; Burk, S.; Gorr, B.; Christ, H.-J.; Schliephake, D.; Heilmaier, M.; Bornemann, R.; Bolívar, P. H.
2013. Oxidation of metals, 80 (3-4), 231–242. doi:10.1007/s11085-013-9375-1
A Study on Effect of Reactive and Rare Earth Element Additions on the Oxidation Behavior of Mo–Si–B System.
Majumdar, S.; Burk, S.; Schliephake, D.; Krüger, M.; Christ, H.-J.; Heilmaier, M.
2013. Oxidation of metals, 80 (3-4), 219–230. doi:10.1007/s11085-013-9374-2
The effect of micro-alloying with Zr and Nb on the oxidation behavior of Fe₃Al and FeAl alloys.
Janda, D.; Fietze, H.; Galetz, M. C.; Heilmaier, M.
2013. Intermetallics, 41, 51–57. doi:10.1016/j.intermet.2013.04.016
Microstructural and micro-mechanical properties of Mo-Si-B alloyed with Y and La.
Majumdar, S.; Kumar, A.; Schliephake, D.; Christ, H.-J.; Jing, X.; Heilmaier, M.
2013. Materials science and engineering / A, 573 (June), 257–263. doi:10.1016/j.msea.2013.02.053
Effect of Yttrium Alloying on Intermediate to High-Temperature Oxidation Behavior of Mo-Si-B Alloys.
Majumdar, S.; Schliephake, D.; Gorr, B.; Christ, H.-J.; Heilmaier, M.
2013. Metallurgical and materials transactions / A, 44 (5), 2243–2257. doi:10.1007/s11661-012-1589-3
Influence of fiber alignment on creep in directionally solidified NiAl-10Mo in-situ composites.
Seemüller, C.; Heilmaier, M.; Haenschke, T.; Bei, H.; Dlouhy, A.; George, E. P.
2013. Intermetallics, 35 (April), 110–115. doi:10.1016/j.intermet.2012.12.007
Microstructural features of switched Cu-Cr surface melt layers.
Klinski-Wetzel, K. von; Kowanda, C.; Rettenmaier, T.; Heilmaier, M.; Hinrichsen, V.; Mueller, F. E. H.
2013. 18th Plansee Seminar, 3-7 June 2013 [Konferenz]
Effects of Zr Additions on the Microstructure and the Mechanical Behavior of PM Mo-Si-B Alloys.
Krüger, M.; Schliephake, D.; Jain, P.; Kumar, K. S.; Schuhmacher, G.; Heilmaier, M.
2013. JOM, 65 (2), 301–306. doi:10.1007/s11837-012-0475-1
2012
Parameters influencing the electrical conductivity of CuCr alloys.
Klinski-Wetzel, K. von; Kowanda, C.; Böning, M.; Heilmaier, M.; Müller, F. E. H.
2012. 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV’12), Tomsk, Russia, September 2-7, 2012, 392–395, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/DEIV.2012.6412536
2011
Fatigue resistance of Fe3Al-based alloys.
Gang, F.; Krüger, M.; Laskowsky, A.; Rühe, H.; Schneibel, J. H.; Heilmaier, M.
2011. Intermetallic-based alloys for structural and functional applications : symposium held november 29 - december 3, Boston, Massachussetts, U.S.A.; [Symposium N, "Intermetallic-Based Alloys for Structural and Functional Applications" held ... at the 2010 MRS Fall Meeting]. Ed.: M. Palm, 59–64, Materials Research Society. doi:10.1557/opl.2011.26
Microstructural and mechanical properties of ternary Mo-Si-B alloys resulting from different processing routes.
Krüger, M.; Heilmaier, M.; Shyrska, V.; Loboda, P. I.
2011. Intermetallic-based alloys for structural and functional applications : symposium held november 29 - december 3, Boston, Massachussetts, U.S.A.; [Symposium N, "Intermetallic-Based Alloys for Structural and Functional Applications" held ... at the 2010 MRS Fall Meeting]. Ed.: M. Palm, 361–366, Materials Research Society. doi:10.1557/opl.2011.188
2010
Tracking of RRR value and microstructure in high purity niobium along the production chain from the ingot to the finished cavity.
Janda, D.; Heilmaier, M.; Singer, G. X.; Singer, W.; Simader, W.; Grill, R.
2010. 1st International Particle Accelerator Conference, IPAC 2010; Kyoto; Japan; 23 May 2010 through 28 May 2010, 435–437, ACFA