|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Multi-Principal Elements Alloys X
||Characteristics of uniaxial mechanical properties of single crystals of FCC high- and medium-entropy alloys
||Haruyuki Inui, Kyosuke Kishida, Le Li
|On-Site Speaker (Planned)
Characteristics of uniaxial mechanical properties of FCC high- and medium-entropy alloys will be described based on the results obtained from compression and tensile deformation made on single-crystal FCC high- and medium-entropy alloys of the Cr-Mn-Fe-Co-Ni quinary system and its quaternary and ternary subsystems in a temperature range of 10-1273 K. Below room temperature, the CRSS increases significantly with decreasing temperature for all these alloys, but the dulling of the temperature dependence of CRSS occurs at cryogenic temperatures for some alloys with the extent of the dulling varying from alloy to alloy. Deformation twinning occurs at low temperatures with the highest temperature for the occurrence of deformation twinning increasing with the decrease in stacking fault energy. For all these alloys, a small increase in CRSS is found at high temperatures due to the PL effect accompanied by serrated flow. Factors determining the occurrence of these characteristics will be discussed.
||High-Entropy Alloys, Mechanical Properties, Characterization