|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||L-89: Hydrogen Effects on the Mechanical Behavior of CoCrFeMnNi High-entropy Alloy: Role of Pre-strain
|| , Dong-Hyun Lee, Jung-A Lee, Jin-Yoo Suh, Jae-il Jang
|On-Site Speaker (Planned)
High-entropy alloys (HEAs) containing five or more elements in almost equal atomic proportions exhibit excellent properties such as high strength, large strain hardening capability, and high toughness, and are hence emerging as an exciting class of new structural materials. Among them, CoCrFeMnNi alloy with face-centered cubic structure is known to have the highest structural stability. To systematically study the effect of hydrogen on the mechanical behavior of HEA, which can be a crucial issue in industrial application of HEA but has not been well understood yet, several different levels of pre-strain were applied to the CoCrFeMnNi HEA to produce various microstructures with different crystalline defects. After hydrogen charging of the pre-strained alloys, subsequent nanoindentation tests and thermal desorption analyses were carried out. The results were analyzed in terms of microstructure changes, hydrogen solubility, and their influences on nanomechanical behavior.
||Planned: Supplemental Proceedings volume