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Article Dans Une Revue Scripta Materialia Année : 2021

Isotropic and kinematic hardening of a high entropy alloy

Résumé

The contribution of kinematic hardening to the overall strain hardening of a high entropy alloy (HEA) was investigated for the first time ever. It was assessed for a single-phase equiatomic CoCrFeMnNi alloy based on a study of the Bauschinger effect. The observed occurrence of high back stresses signifies substantial kinematic hardening. We attribute it to the low probability of cross-slip in this HEA which, however, rises in the process of straining. A model that captures the mentioned effects was proposed and validated.
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hal-03143131 , version 1 (23-09-2022)

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Paternité - Pas d'utilisation commerciale

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O. Bouaziz, Jongun Moon, Hyoung Seop Kim, Yuri Estrin. Isotropic and kinematic hardening of a high entropy alloy. Scripta Materialia, 2021, 191, pp.107-110. ⟨10.1016/j.scriptamat.2020.09.022⟩. ⟨hal-03143131⟩
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