Plasticity of Metals and Intermetallics

Lecture

• Course number: 2173648
• Lecturers: Dr.-Ing. Alexander Kauffmann, Prof. Martin Heilmaier
• Language: English
• Contact hours: 4
• Series: every summer term
• Credit points: 8
• Exam: oral in English or German
• Work load: lectures 56 h, private studies 187 h

Contents

Please find the lecture notes in the following. You may use the material under CC BY-NC-SA 3.0. Due to copyright restrictions, some of the images are only available in the hand-out material to the participants in the lecture.

The lecture and materials provided with it are dedicated to Prof. Otmar Vöhringer previously involved in IAM-WK's plasticity lectures.

AK gratefully acknowledges education and mentorship by Prof. Jens Freudenberger and Prof. Ludwig Schultz that have provided the basis for the lecture in the present state. Special thanks are due to Prof. Sharvan K. Kumar for discussion and support with his own lecture materials.

The materials are prepared by Dr.-Ing. Alexander Kauffmann.

Ch. 0: General Information

• Appointments
• Credits
• Topics
• Literature
• Software

Ch. 1: Introduction

• Relevance of Plasticity in Industry and Research

Ch. 2: Macroscopic Features of Plastic Deformation

• Stress-Strain Curve of Common Metallic Materials

Ch. 3: Fundamentals and Interrelations to Other Lectures

• Fundamental Concepts of Elasticity
• Macroscopic Strength and Strengthening/Hardening
• Fundamentals of Crystallography
• Fundamentals of Defects in Crystalline Solids

Ch. 4: Dislocations

• Fundamental Concept
• Observation of Dislocations
• Properties of Dislocations
• Interaction of Dislocations
• Motion of Dislocations
• Multiplication of Dislocations
• Dislocations in fcc Metals
• Dislocations in bcc Metals
• Dislocations in hcp Metals and Complex Intermetallics

Ch. 5: Single Crystal Plasticity

• General Stages of Plastic Deformation and Fundamentals of the Stress-Strain Curve (fcc Metals)
• Influence of Temperature, Orientation, Strain Rate, etc. (fcc Metals)
• Further Examples (Extension of the Results to bcc, hcp and Intermetallic Materials)
• Deformation Twinning in Single-Crystals

Ch. 6: Plasticity of Polycrystalline Materials

•     Transition from Single Crystals to Polycrystals
•     Strength of Polycrystals
  • Solute Atoms
  • Dislocations (incl. Dislocation Patterning)
  • Grain Boundaries (incl. Homogenization of Critical Stress)
  • Precipitates and Dispersoids

Ch. 7: Other Mechanisms of Plastic Deformation