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
收藏
页码：338 / 340
页数：3
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