Engineering heterostructured grains to enhance strength in a single-phase high-entropy alloy with maintained ductility

Zhiqiang Fu; Benjamin E. MacDonald; Zhiming Li; Zhenfei Jiang; Weiping Chen; Yizhang Zhou; Enrique J. Lavernia

doi:10.1080/21663831.2018.1526222

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Engineering heterostructured grains to enhance strength in a single-phase high-entropy alloy with maintained ductility

Original Report | 更新时间：2026-08-19

- Engineering heterostructured grains to enhance strength in a single-phase high-entropy alloy with maintained ductility
- Materials Research Letters Vol. 6, Issue 11, Pages: 634-640(2018)
- 作者机构：
  
  1. Department of Materials Science and Engineering University of California Irvine CA USA
  2. Department of Materials Science and Engineering University of California Irvine
  3. Max-Planck-Institut für Eisenforschung
  4. Guangdong Key Laboratory for Advanced Metallic Materials Processing South China University of Technology
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1526222
  CLC：
- Online First：25 September 2018，
  
  Published：2018
- 稿件说明：
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Zhiqiang Fu, Benjamin E. MacDonald, Zhiming Li, et al. Engineering heterostructured grains to enhance strength in a single-phase high-entropy alloy with maintained ductility[J]. Materials Research Letters, 2018, 6(11): 634-640.
DOI：

Zhiqiang Fu, Benjamin E. MacDonald, Zhiming Li, et al. Engineering heterostructured grains to enhance strength in a single-phase high-entropy alloy with maintained ductility[J]. Materials Research Letters, 2018, 6(11): 634-640. DOI： 10.1080/21663831.2018.1526222.

摘要

Abstract

BSTRACTCoarse-grained (CG) single-phase face-centered cubic (fcc) high-entropy alloys (HEAs) normally show insufficient room temperature strength. Here we design and implement a heterogeneous grain structure to strengthen a single-phase fcc Fe

HEA. Significantly

the heterostructured (HS) fcc HEA shows a dramatic enhancement (increasing from ∼350 to ∼614 MPa) in tensile yield strength as compared to its CG counterpart. As a result of its extraordinary work-hardening ability arising from the heterogeneous grain structure

the novel HS HEA exhibits a very high ultimate strength of ∼1308 MPa

and a good ductility of ∼23.1% which is almost identical to that of its CG counterpart.

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