Cryogenic mechanical behavior of CoCrFeNi alloy at different stages of recrystallization

MRS Communications 2026 Open access

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Authors: Liuyang Yu, Hao Zhang (15339), Wanquan Zhu, Grethe Winther, Guilin Wu, Oleg V. Mishin
DOI: 10.1557/s43579-026-00943-w
Cited by: 2
References: 27

Abstract

The microstructure and cryogenic mechanical properties have been investigated in a CoCrFeNi alloy cold rolled to 95% thickness reduction and subsequently annealed to produce either partially recrystallized or fully recrystallized samples. A combination of high yield strength (1 GPa), high ultimate tensile strength (1.4 GPa), and good ductility (42%) is obtained at − 196°C in a sample with a recrystallized area fraction of 62%. It is demonstrated that plastic deformation at this temperature results in profuse twinning within recrystallized grains. The strength and ductility of each cryogenically tested sample are found to be higher than those at room temperature.

Fields of Study & Subjects

Microstructure and mechanical properties High Entropy Alloys Studies Microstructure and Mechanical Properties of Steels

Publication details

Journal / source
MRS Communications
Publisher
Springer Science and Business Media LLC
Volume
16
Issue
3
Pages
829–836
Publication date
3 March 2026
Language
EN