Annealing-induced hardening in high-pressure torsion processed CoCrNi medium entropy alloy

被引：73

作者：

Praveen, S. ^{[1
,2
]}

Bae, Jae Wung ^{[1
,2
]}

Asghari-Rad, Peyman ^{[1
,2
]}

Park, Jeong Min ^{[1
,2
]}

Kim, Hyoung Seop ^{[1
,2
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 37673, South Korea

[2] Pohang Univ Sci & Technol POSTECH, Ctr High Entropy Alloys, Pohang 37673, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2018年 / 734卷

基金：

新加坡国家研究基金会;

关键词：

CoCrNi equiatomic alloy; Hardening; Grain boundaries; Dislocation density; High-pressure torsion; DEFORMATION; STABILITY; BEHAVIOR;

D O I：

10.1016/j.msea.2018.07.107

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanocrystalline CoCrNi equiatomic alloy processed by high-pressure torsion shows annealing induced hardening at 500 degrees C and 600 degrees C. The microstructural characterization indicates the hardening phenomenon is not because of precipitation hardening. The annealing-induced hardening is explained based on the reduced dislocation density and grain boundaries relaxation.

引用

页码：338 / 340

页数：3

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