Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy

Yi Liu; Mengning Xu; Lirong Xiao; Xuefei Chen; Zhaohua Hu; Bo Gao; Ningning Liang; Yuntian Zhu; Yang Cao; Hao Zhou

doi:10.1080/21663831.2023.2208166

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Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy

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- Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy
- Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy
- 材料研究快报（英文） 2023年11卷第8期页码：638-647
- 作者机构：
  
  1. a Nano and Heterogeneous Materials Center School of Materials Science and Engineering Nanjing University of Science and Technology
  2. b School of Materials Science and Engineering Jiangsu University
  3. c Ansteel Beijing Research Institute Co. Ltd.
  4. d Department of Materials Science and Engineering City University of Hong Kong
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2023.2208166
  中图分类号：
- 网络首发：2023-05-09，
  
  纸质出版：2023
- 稿件说明：
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Yi Liu, Mengning Xu, Lirong Xiao, 等. Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy[J]. 材料研究快报（英文）, 2023,11(8):638-647.

Yi Liu, Mengning Xu, Lirong Xiao, et al. Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy[J]. Materials Research Letters, 2023, 11(8): 638-647.
Yi Liu, Mengning Xu, Lirong Xiao, 等. Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy[J]. 材料研究快报（英文）, 2023,11(8):638-647. DOI： 10.1080/21663831.2023.2208166.

Yi Liu, Mengning Xu, Lirong Xiao, et al. Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy[J]. Materials Research Letters, 2023, 11(8): 638-647. DOI： 10.1080/21663831.2023.2208166.

摘要

Abstract

Piling-ups of geometrically necessary dislocation (GND) arrays against interfaces are known to produce hetero-deformation induced (HDI) strengthening and strain hardening to enhance the strength and ductility of heterostructured materials. Here we report an interesting dislocation mechanism that can produce strong HDI hardening: consecutive reflections of GND planar piling-up arrays near the opposite phase boundaries in a heterostructured AlCoCrFeNi

high entropy alloy (HEA). In contrast

dislocation transmission was found at grain boundaries in the fcc phase. The discovery here provides guidance for future materials design

which may improve the combination of strength and ductility of metallic materials.

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相关机构

Nano and Heterogeneous Material Center Nanjing University of Science and Technology Nanjing People’s Republic of China

Beijing Key Lab of Microstructure and Property of Advanced Materials Beijing University of Technology

School of Aeronautics and Astronautics Sichuan University

Nano and Heterogeneous Material Center Nanjing University of Science and Technology

Department of Materials Science and Engineering North Carolina State University Raleigh

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