|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||On the Influence of Crystal Orientation and Testing Temperature on the Local Mechanical Properties of High Entropy Alloys
||Verena Maier-Kiener, Benjamin Schuh, Helmut Clemens, Anton Hohenwarter
|On-Site Speaker (Planned)
Recently, it has been shown for different High Entropy Alloys that these might show some microstructural instabilities during annealing resulting in a multi-phase structure, which occurs especially rapid in the nanocrystalline conditions and after prolonged times in the coarse-grained states. To gain more insights into the corresponding mechanical properties of differently annealed samples, nanoindentation was used and revealed drastic changes in hardness, and strain-rate sensitivity but also in the Young’s modulus. Besides a strong increase in the Young’s Modulus due to precipitation formation in the nc-conditions by annealing, a significant scatter in the coarsen-grained states was also found. Further tests in single crystalline but also single phase regions showed additionally a strong elastic anisotropy. Experiments were performed at room temperature and additionally at elevated temperatures up to 400°C in order to further investigate the thermally activated deformation components as well.
||Planned: Supplemental Proceedings volume