Gradient hierarchical grain structures of Al0.1CoCrFeNi high-entropy alloys through dynamic torsion

被引：32

作者：

Chen, G. ^{[1
]}

Li, L. T. ^{[1
]}

Qiao, J. W. ^{[2
]}

Jiao, Z. M. ^{[1
]}

Ma, S. G. ^{[1
]}

Ng, Fern Lan ^{[3
]}

Zhu, Z. G. ^{[3
]}

Zhao, D. ^{[1
]}

Wang, Z. H. ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Coll Mech & Vehicle Engn, Inst Appl Mech, Taiyuan 030024, Shanxi, Peoples R China

[2] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China

[3] Singapore Inst Mfg Technol, 73 Nan Yang Dr, Singapore 637662, Singapore

来源：

MATERIALS LETTERS | 2019年 / 238卷

基金：

中国国家自然科学基金;

关键词：

High-entropy alloys; Dynamic torsion; Microstructure; Indentation and hardness;

D O I：

10.1016/j.matlet.2018.11.176

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Al0.1CoCrFeNi high-entropy alloys are firstly processed by cyclic dynamic torsion (DT) using Split- Hopkinson Torsional Bar. Gradient hierarchical microstructures produced by DT are investigated using electron backscattered diffraction, transmission electron microscopy, and nanoindentation tests. Based on the gradient torsional strain, significant grain refinement, remarkable work hardening, and hierarchical deformation substructures are introduced into the current DT-HEAs. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：163 / 166

页数：4

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