Isotropic and kinematic hardening of a high entropy alloy

Olivier Bouaziz; Jongun Moon; Hyoung Seop Kim; Yuri Estrin

doi:10.1016/j.scriptamat.2020.09.022

Isotropic and kinematic hardening of a high entropy alloy

Olivier Bouaziz, Jongun Moon, Hyoung Seop Kim, Yuri Estrin

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	107-110
Number of pages	4
Journal	Scripta Materialia
Volume	191
DOIs	https://doi.org/10.1016/j.scriptamat.2020.09.022
Publication status	Published - 15 Jan 2021

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10.1016/j.scriptamat.2020.09.022

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title = "Isotropic and kinematic hardening of a high entropy alloy",

abstract = "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.",

keywords = "Back stress, Bauschinger effect, High entropy alloys, Isotropic hardening, Kinematic hardening",

author = "Olivier Bouaziz and Jongun Moon and Kim, {Hyoung Seop} and Yuri Estrin",

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T1 - Isotropic and kinematic hardening of a high entropy alloy

AU - Bouaziz, Olivier

AU - Moon, Jongun

AU - Kim, Hyoung Seop

AU - Estrin, Yuri

PY - 2021/1/15

Y1 - 2021/1/15

N2 - 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.

AB - 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.

KW - Back stress

KW - Bauschinger effect

KW - High entropy alloys

KW - Isotropic hardening

KW - Kinematic hardening

UR - http://www.scopus.com/inward/record.url?scp=85091252042&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2020.09.022

DO - 10.1016/j.scriptamat.2020.09.022

M3 - Article

AN - SCOPUS:85091252042

VL - 191

SP - 107

EP - 110

JO - Scipta Materialia

JF - Scipta Materialia

SN - 1359-6462

ER -

Isotropic and kinematic hardening of a high entropy alloy

Abstract

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