Institute for Applied Materials – Materials Science and Engineering
kauffmann kauffmann

Dr.-Ing. Alexander Kauffmann

  • Karlsruher Institut für Technologie (KIT)
    Institut für Angewandte Materialien - Werkstoffkunde (IAM-WK)
    Campus Süd
    Engelbert-Arnold-Straße 4
    76131 Karlsruhe

    Building 10.91

The department Physical Metallurgy can be found here.

Curriculum Vitae

since 07.2016 head of the group Physical Metallurgy
since 08.2014 group Physical Metallurgy at the Institute for Applied Materials (IAM-WK) at Karlsruhe Institute of Technology (KIT) with Prof. M. Heilmaier
09.2007 - 07.2014 group Metal Physics at the Institute for Metallic Materials at Leibniz-Institute for Solid State and Materials Research Dresden (IFW Dresden) with Prof. L. Schultz and Dr. J. Freudenberger
12.2009 - 05.2014

doctoral thesis at Fakultät für Maschinenwesen of Dresden University of Technology
thesis: "Gefügeverfeinerung durch mechanische Zwillingsbildung in Kupfer und Kupfermischkristalllegierungen"

10.2004 - 11.2009

studies in Materials Science at Dresden University of Technology
diploma thesis: "Eisenpniktidsupraleiter in gepulsten Magnetfeldern bis μ0H = 50 T"
(written in German and available on request)

You can follow up his publications Google Scholar.

Awards

  • Nachwuchspreis der Deutschen Gesellschaft für Materialkunde 2013
  • Förderpreis des Deutsches Kupferinstituts 2014
  • Tschirnhaus-Plakette des Leibniz-Instituts für Festkörper- und Werkstoffforschung Dresden e. V. 2014
  • Postdoktoranden-Stipendium der Carl Zeiss Stiftung 2015-2017

Publications


2020
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.
2020. Corrosion science, 109081. doi:10.1016/j.corsci.2020.109081
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
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. 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
Characterization of the Microstructure After Composite Peening of Aluminum.
Seitz, M.; Dürrschnabel, M.; Kauffmann, A.; Kurpiers, C.; Greiner, C.; Weidenmann, K. A.
2020. Advanced engineering materials. doi:10.1002/adem.202000575
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
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, 139781. doi:10.1016/j.msea.2020.139781
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
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
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
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
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
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
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
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
2019
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.
2019. Acta materialia. doi:10.1016/j.actamat.2019.12.005
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
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
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
2018
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, Cham. 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
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
2017
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
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
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
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
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
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
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
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
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
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
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

Publications at former research institutes

Efficiency of the refinement by deformation twinning in wire drawn single phase copper alloys.
Kauffmann, A.; Freudenberger, J.; Klauss, H.; Schillinger, W.; Sarma, V. S.; Schultz, L.
2015. Materials Science and Engineering A , 624, 71-78. 10.1016/j.msea.2014.11.052 
Solute redistribution during annealing of a cold rolled Cu–Ag alloy.
Gubicza, J.; Hegedus, Z.; Lábár, J.L.; Kauffmann, A.; Freudenberger, J.; Sarma, V. S.
2015. Journal of Alloys and Compounds , 94, 2967-2979. 10.1016/j.jallcom.2014.10.093 
Assessment of the thermodynamic dimension of the stacking fault energy.
Geissler, D.; Freudenberger, J.; Kauffmann, A.; Martin, S.; Rafaja, D.
2014. Philosophical Magazine , 94, 2967-2979. 10.1080/14786435.2014.944606 
Mechanism of nanostructure formation in ball-milled Cu and Cu-3wt% Zn studied by X-ray diffraction line profile analysis.
Khoshkhoo, M. S.; Scudino, S.; Bednarcik, J.; Kauffmann, A.; Bahmanpour, H.; Freudenberger, J.; Scattergood, R.; Zehetbauer, M. J.; Koch, C. C.; Eckert, J.
2014. Journal of Alloys and Compounds , 588, 138-143. 10.1016/j.matchar.2014.02.002 
Glow discharge plasma as a surface preparation tool for microstructure investigations.
Brackmann, V.; Hoffmann, V.; Kauffmann, A.; Helth, A.; Thomas, J.; Wendrock, H.; Freudenberger, J.; Gemming, T.; Eckert, J.
2014. Materials Characterization , 91, 76-88. 10.1016/j.matchar.2014.02.002 
Dynamic recrystallisation and precipitation behaviour of high strength and highly conducting Cu-Ag-Zr-alloys.
Bittner, F.; Yin, S.; Kauffmann, A.; Freudenberger, J.; Klauß, H.; Korpala, G.; Kawalla, R.; Schillinger, W.; Schultz, L.
2014. Materials Science and Engineering A , 597, 139-147. 10.1016/j.msea.2013.12.051 
High strength and ductile ultrafine-grained Cu-Ag alloy through bimodal grain size, dislocation density and solute distribution.
Raju, K. S.; Sarma, V. S.; Kauffmann, A.; Heged?us, Z.; Gubicza, J.; Peterlechner, M.; Freudenberger, J.; Wilde, G.
2013. Acta Materialia , 61, 228-238. 10.1016/j.actamat.2012.09.053 
Properties of cryo-drawn copper with severely twinned microstructure.
Kauffmann, A.; Freudenberger, J.; Klauß, H.; Klemm, V.; Schillinger, W.; Sarma, V. S.; Schultz, L.
2013. Materials Science and Engineering A , 588, 132-141. 10.1016/j.msea.2013.09.022 
Processing of Intermetallic Titanium Aluminide Wires.
Marr, T.; Freudenberger, J.; Kauffmann, A.; Romberg, J.; Okulov, I.; Petters, R.; Scharnweber, J.; Eschke, A.; Oertel, C.-G.; Kühn, U.; Eckert, J.; Skrotzki, W.; Schultz, L.
2013. Metals , 3, 188-201. 10.3390/met3020188 
Grain Refinement and Deformation Mechanisms in Room Temperature Severe Plastic Deformed Mg-AZ31.
Knauer, E.; Freudenberger, J.; Marr, T.; Kauffmann, A.; Schultz, L.
2013. Metals , 3, 283-297. 10.3390/met3030283 
Twinning Phenomena along and beyond the Bain Path.
Kauffmann-Weiss, S.; Kauffmann, A.; Niemann, R.; Freudenberger, J.; Schultz, L.; Fähler, S.
2013. Metals , 3, 319-336. 10.3390/met3040319 
Isotropic behavior of critical current for MgB2 ex situ tapes with 5wt.% carbon addition.
Kario, A.; Grinenko, V.; Kauffmann, A.; Häßler, W.; Rodig, C.; Kováš, P.; Melišek, T.; Holzapfel, B.
2012. Physica C , 483, 222-224. 10.1016/j.physc.2012.07.013 
Severe deformation twinning in pure copper by cryogenic wire drawing.
Kauffmann, A.; Freudenberger, J.; Geissler, D.; Yin, S.; Schillinger,W.; Sarma, V. S.; Bahmanpour, H.; Scattergood, R.; Khoshkhoo, M. S.; Wendrock, H.; Koch, C. C.; Eckert, J.; Schultz, L.
2011. Acta Materialia , 59, 7711-7723. 10.1016/j.actamat.2011.08.042 
Appearance of dislocation-mediated and twinning-induced plasticity in an engineering-grade FeMnNiCr alloy.
Geissler, D.; Freudenberger, J.; Kauffmann, A.; Krautz, M.; Klauss, H.; Voss, A.; Eickemeyer, J.; Schultz, L.
2011. Acta Materialia , 59, 7711-7723. 10.1016/j.actamat.2011.08.040 
Critical current scaling and anisotropy in oxypnictide superconductors.
Kidszun, M.; Haindl, S.; Thersleff, T.; Haenisch, J.; Kauffmann, A.; Iida, K.; Freudenberger, J.; Schultz, L.; Holzapfel, B.
2011. IEEE Transactions on Applied Superconductivity , 106, 137001. 10.1103/PhysRevLett.106.137001 
Jc scaling and anisotropies in Co-doped Ba-122 thin films.
Hänisch, J.; Iida, K.; Haindl, S.; Kurth, F.; Kauffmann, A.; Kidszun, M.; Thersleff, T.; Freudenberger, J.; Schultz, L.; Holzapfel, B.
2011. IEEE Transactions on Applied Superconductivity , 21, 2887-2890. 10.1109/TASC.2010.2100348 
Effect of stacking fault energy on deformation behavior of cryo-rolled copper and copper alloys.
Bahmanpour, H.; Kauffmann, A.; Khoshkhoo, M. S.; Youssef, K. M.; Mula, S.; Freudenberger, J.; Eckert, J.; Scattergood, R. O.; Koch, C. C.
2011. Materials Science and Engineering A , 529, 230-236. 10.1016/j.msea.2011.09.022 
Studies on recrystallization of single-phase copper alloys by resistance measurements.
Freudenberger, J.; Kauffmann, A.; Klauss, H.; Marr, T.; Nenkov, K.; Sarma, V. S. und Schultz, L.
2010. Acta Materialia , 58, 2324-2329. 10.1016/j.actamat.2009.12.018 
Role of stacking fault energy in strengthening due to cryo-deformation of FCC metals.
Sarma, V. S.; Wang, J.; Jian, W. W.; Kauffmann, A.; Conrad, H.; Freudenberger, J.; Zhu, Y. T.
2010. Materials Science and Engineering A , 527, 7624-7630. 10.1016/j.msea.2010.08.015 
High upper critical fields and evidence of weak-link behavior in superconducting LaFeAsO1-xFx thin films.
Haindl, S.; Kidszun, M.; Kauffmann, A.; Nenkov, K.; Kozlova, N.; Freudenberger, J.; Thersleff, T.; Haenisch, J.; Werner, J.; Reich, E.; Schultz, L.; Holzapfel, B.
2010. Physical Review Letters , 104, 77001. 10.1103/PhysRevLett.104.077001 
Damascene lightweight metals.
Marr, T.; Freudenberger, J.; Kauffmann, A.; Scharnweber, J.; Oertel, C.-G.; Skrotzki, W.; Siegel, U.; Kuehn, U.; Eckert, J.; Martin, U.; Schultz, L.
2010. Advanced Engineering Materials , 12, 1191-1197. 10.1002/adem.201000198 
Irreversibility field up to 42 T of GdBa2Cu3O7 thin films grown by PLD and its dependence on deposition parameters.
Rosenzweig, S.; Haenisch, J.; Iida, K.; Kauffmann, A.; Mickel, C.; Thersleff, T.; Freudenberger, J.; Huehne, R.; Holzapfel, B.; Schultz, L.
2010. Superconductor Science and Technology , 23, 105017. 10.1088/0953-2048/23/10/10501 
Microstructural inhomogeneities in CuAgZr alloys due to heavy plastic deformation.
Lyubimova, J.; Freudenberger, J.; Mickel, C.; Thersleff, T.; Kauffmann, A.; Schultz, L.
2010. Materials Science and Engineering A , 527, 606-613. 10.1016/j.msea.2009.08.036