Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures

Yi Li; Peijian Shi; Mingyang Wang; Yinpan Yang; Yan Wang; Yiqi Li; Yuebo Wen; Weili Ren; Na Min; Yan Chen; Yifeng Guo; Zhe Shen; Tianxiang Zheng; Ningning Liang; Wenjun Lu; Peter K. Liaw; Yunbo Zhong; Yuntian Zhu

doi:10.1080/21663831.2022.2078169

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Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures

Original Reports | 更新时间：2026-08-19

- Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures
- Materials Research Letters Vol. 10, Issue 9, Pages: 602-610(2022)
- 作者机构：
  
  1. a State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering Shanghai University
  2. a State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering Shanghai University Shanghai People’s Republic of China
  3. c Laboratory for Microstructures Shanghai University
  4. d Carl Zeiss (Shanghai) Co. Ltd
  5. e School of Materials Science and Engineering Nanjing University of Science and Technology
  6. f Department of Mechanical and Energy Engineering Southern University of Science and Technology
  7. g Department of Materials Science and Engineering The University of Tennessee Knoxville
  8. b Department of Materials Science and Engineering Hong Kong Institute for Advanced Study College of Science and Engineering City University of Hong Kong
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2022.2078169
  CLC：
- Online First：25 May 2022，
  
  Published：2022
- 稿件说明：
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Yi Li, Peijian Shi, Mingyang Wang, et al. Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures[J]. Materials Research Letters, 2022, 10(9): 602-610.
DOI：

Yi Li, Peijian Shi, Mingyang Wang, et al. Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures[J]. Materials Research Letters, 2022, 10(9): 602-610. DOI： 10.1080/21663831.2022.2078169.

摘要

Abstract

Eutectic high-entropy alloys (EHEAs) feature attractive strength–ductility balance at both ambient and cryogenic temperatures. Nevertheless

microstructural origins underpinning these balanced mechanical properties remain elusive. Here the deformation mechanisms of a recently-reported Al

EHEA were comparatively investigated at 298 and 77 K

which revealed a high frequency and density of dislocation multi-slip scenario in the soft eutectic lamellae and the corresponding compatible co-deformation in the adjacent hard lamellae that collectively endowed strong hetero-deformation-induced (HDI) hardening and excellent forest-dislocation hardening. Therefore

better ductility and tensile strength

in comparison to the other widely-studied EHEA system

could be sustained even at liquid-nitrogen temperatures.

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Related Institution

a State Key Laboratory of Powder Metallurgy Central South University

b Max-Planck Institut für Eisenforschung GmbH

c School of Chemical and Materials Engineering National University of Sciences and Technology H-12

a Multidisciplinary Research Center – Cardinal Stefan Wyszynski University in Warsaw

a Multidisciplinary Research Center – Cardinal Stefan Wyszynski University in Warsaw Warsaw Poland

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