A novel equiaxed eutectic high-entropy alloy with excellent mechanical properties at elevated temperatures

Liuliu Han; Xiandong Xu; Zhiming Li; Bin Liu; C. T. Liu; Yong Liu

doi:10.1080/21663831.2020.1772395

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A novel equiaxed eutectic high-entropy alloy with excellent mechanical properties at elevated temperatures

Original Reports | 更新时间：2026-08-19

- A novel equiaxed eutectic high-entropy alloy with excellent mechanical properties at elevated temperatures
- Materials Research Letters Vol. 8, Issue 10, Pages: 373-382(2020)
- 作者机构：
  
  1. b Max-Planck-Institut für Eisenforschung Max-Planck-Str. 1
  2. c Center for Electron Microscopy College of Materials Science and Engineering Hunan University
  3. a State Key Laboratory of Powder Metallurgy Central South University Changsha People’s Republic of China
  4. b Max-Planck-Institut für Eisenforschung Max-Planck-Str. 1 Düsseldorf Germany
  5. d School of Materials Science and Engineering Central South University
  6. a State Key Laboratory of Powder Metallurgy Central South University
  7. e Department of Materials Science and Engineering City University of Hong Kong
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2020.1772395
  CLC：
- Online First：01 June 2020，
  
  Published：2020
- 稿件说明：
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Liuliu Han, Xiandong Xu, Zhiming Li, et al. A novel equiaxed eutectic high-entropy alloy with excellent mechanical properties at elevated temperatures[J]. Materials Research Letters, 2020, 8(10): 373-382.
DOI：

Liuliu Han, Xiandong Xu, Zhiming Li, et al. A novel equiaxed eutectic high-entropy alloy with excellent mechanical properties at elevated temperatures[J]. Materials Research Letters, 2020, 8(10): 373-382. DOI： 10.1080/21663831.2020.1772395.

摘要

Abstract

25.1

18.8

23.3

22.6

8.5

1.7

(at. %) eutectic high-entropy alloy (EHEA) consisting of face-centered-cubic (FCC) and C14 Laves phases was produced by powder metallurgy. The EHEA shows an equiaxed morphology that is different from eutectic lamellar structure. Nanometer L1

phase (4–5 nm) further precipitates in FCC matrix. The microstructure is highly stable upon annealing at 1000°C for 100 h

which leads to attractive high-temperature strength. The fracture behaviour is observed to be modified by the equiaxed Laves phase

which contains microcracks induced by multiple dislocation slips. The diversified cracking modes help to relieve stress concentration and therefore enhance ductility at high temperatures.

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