|About this Abstract
||1st World Congress on High Entropy Alloys (HEA 2019)
||High Entropy Alloys 2019
||P36: Microstructural Evolution of CoCrFeMnNi under Tribological Load with Varying Stress Field
||Antje Dollmann, Alexander Kauffmann, Martin Heilmaier, Christian Greiner
|On-Site Speaker (Planned)
The high strength and corrosion resistance of High Entropy Alloys (HEAs) is expected to be advantageous for tribological applications. As the microstructure of a material under a tribological load is highly dynamic and has a complex interplay with the tribological properties, understanding the fundamental mechanisms of deformation and microstructure change is challenging. The focus of the present work is to reveal the fundamental deformation mechanisms governing the mechanical response of CoCrFeMnNi to the high shear loading of a sliding contact after single strokes with varying tangential and normal loads. While changes of normal load are easy to be realized, changes in tangential load were provoked by varying adhesive forces with counter body modifications. By STEM and Kikuchi Diffraction Patterns, the resulting deformation layer was analysed. The obtained microstructural data was used to evaluate the effect of stress field modifications on HEAs in terms of their potential use in tribological contacts.