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Synergistic effect by Al addition in improving mechanical performance of CoCrNi medium-entropy alloy

Donghee Lee - No affiliation found

2019/09/05 Full-length article DOI: 10.1016/j.jallcom.2019.06.005 Journal: Journal of Alloys and Compounds

Abstract:

Highlights•Small Aluminum addition increase the lattice constant of CoCrNi.•Al7.5CoCrNi produce a fine-grained microstructure with B2 phase precipitate.•Combination of grain refinement effect and B2 precipitate increase the yield strength.•Dislocation slip is more favorable than deformation twinning in Al7.5CoCrNi.