Exceptional Strength-Ductility Combinations of a CoCrNi-Based Medium-Entropy Alloy via Short/Medium-Time Annealing after Hot-Rolling.

ABSTRACT: Strong yet ductile alloys have long been desired for industrial applications to enhance structural reliability. This work produced two (CoCrNi)_93.5Al₃Ti₃C_0.5 medium-entropy alloys with exceptional strength-ductility combinations, via short/medium (3 min/30 min) annealing times after hot-rolling. Three types of intergranular precipitates including MC, M₂₃C₆ carbides, and L1₂ phase were detected in both samples. Noticeably, the high-density of intragranular L1₂ precipitates were only found in the medium-time annealed sample. Upon inspection of the deformed substructure, it was revealed that the plane slip is the dominant deformation mechanism of both alloys. This is related to the lower stacking fault ene

SUBMITTER: Chen Y 

PROVIDER: S-EPMC11478033 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature