Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11032789 | Materials Characterization | 2018 | 8 Pages |
Abstract
CoCrFeMnNi high-entropy alloy with a smaller average grain size and gradient microstructure was produced by asymmetric rolling (ASR) and subsequent annealing treatment, which gave rise to a superior combination of strength-ductility. High back stress, working hardening and geometrically necessary dislocations were detected in the gradient structure. The ultra-high strength of the CoCrFeMnNi high-entropy alloy was related to the fine grain and high back-stress, while the superior ductility was ascribed to the gradient structure and fine grain. ASR followed by annealing might be a novel strategy for designing high entropy alloys with high performance.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Z.H. Han, S. Liang, J. Yang, R. Wei, C.J. Zhang,