Strong grain-size effect on deformation twinning of an Al0.1CoCrFeNi high-entropy alloy

S. W. Wu; G. Wang; J. Yi; Y. D. Jia; I. Hussain; Q. J. Zhai; P. K. Liaw

doi:10.1080/21663831.2016.1257514

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Strong grain-size effect on deformation twinning of an Al0.1CoCrFeNi high-entropy alloy

Original Report | 更新时间：2026-08-19

- Strong grain-size effect on deformation twinning of an Al0.1CoCrFeNi high-entropy alloy
- Materials Research Letters Vol. 5, Issue 4, Pages: 276-283(2017)
- 作者机构：
  
  1. Laboratory for Microstructures Institute of Materials Shanghai University
  2. Department of Materials Science and Engineering The University of Tennessee Knoxville
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2016.1257514
  CLC：
- Online First：21 November 2016，
  
  Published：2017
- 稿件说明：
移动端阅览
S. W. Wu, G. Wang, J. Yi, et al. Strong grain-size effect on deformation twinning of an Al0.1CoCrFeNi high-entropy alloy[J]. Materials Research Letters, 2017, 5(4): 276-283.
DOI：

S. W. Wu, G. Wang, J. Yi, et al. Strong grain-size effect on deformation twinning of an Al0.1CoCrFeNi high-entropy alloy[J]. Materials Research Letters, 2017, 5(4): 276-283. DOI： 10.1080/21663831.2016.1257514.

摘要

Abstract

BSTRACTAn Al

0.1

CoCrFeNi high-entropy alloy (HEA) with a face-centered cubic structure in the as-cast and the recrystallized states is investigated. The mean grain size of the as-cast HEA is 14 times larger than that of the recrystallized HEA. The tension tests reveal that deformation twinning is the main mechanism dominating the plastic deformation of two HEAs. With a decrease in the grain size

twin spacing increases

and twin thickness decreases

which results in a low twinning activity. The twinning activity of the recrystallized HEA is strongly inhibited by grain refinement

which degrades the promotion of twinning on the strain-hardening ability and the tensile ductility.

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