Effect of two-step thermomechanical processing on grain boundary character distribution of CoCrFeMnNi high-entropy alloy

被引：16

作者：

Wang, Hao ^{[1
]}

Guo, Keke ^{[1
]}

Liu, Xiaoqiang ^{[2
]}

Hong, Chunfu ^{[2
]}

Wang, Weiguo ^{[2
]}

Dai, Pinqiang ^{[1
,2
,3
]}

Tang, Qunhua ^{[4
]}

机构：

[1] Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou, Fujian, Peoples R China

[2] Fujian Univ Technol, Coll Mat Sci & Engn, Fuzhou, Fujian, Peoples R China

[3] Fujian Prov Key Lab Adv Mat Proc & Applicat, Fuzhou, Fujian, Peoples R China

[4] Putian Univ, Sch Mech & Elect Engn, Putian, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2019年 / 149卷

关键词：

High-entropy alloy; Annealing; Secondary rolling; Grain boundary character distribution; MICROSTRUCTURAL EVOLUTION; TEXTURE EVOLUTION; STABILITY; DESIGN; GROWTH; STEEL;

D O I：

10.1016/j.matchar.2019.01.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of annealing time and secondary-rolling reduction ratio on grain boundary character distribution (GBCD) in an FCC CoCrFeMnNi high-entropy alloy were investigated via electron backscatter diffraction (EBSD). The results show that the processing of 10% cold-rolling reduction subsequently with annealing at 1073 K for 10 h induces a high frequency of low coincident site lattice (CSL) boundary with > 70%, thereby effectively achieving GBCD optimization. As annealing time increases, low-Sigma CSL (Sigma <= 29) boundary frequency first decreases and then remains constant at approximately 60%. The secondary-rolling reduction ratio followed by annealing at 1073 K for 10 h also exerts a substantial influence on GBCD. As the reduction ratio increases from 6% to 40%, the low-Sigma CSL (Sigma <= 29) boundary frequency first increases and then decreases.

引用

页码：105 / 110

页数：6

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