Effect of matrix dislocation strengthening on deformation-induced martensitic transformation behavior of metastable high-entropy alloys

Kenta Yamanaka; Manami Mori; Daishin Yokosuka; Kazuo Yoshida; Yusuke Onuki; Shigeo Sato; Akihiko Chiba

doi:10.1080/21663831.2023.2281593

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Effect of matrix dislocation strengthening on deformation-induced martensitic transformation behavior of metastable high-entropy alloys

Report | 更新时间：2026-08-19

- Effect of matrix dislocation strengthening on deformation-induced martensitic transformation behavior of metastable high-entropy alloys
- Materials Research Letters Vol. 12, Issue 1, Pages: 1-9(2024)
- 作者机构：
  
  1. a Institute for Materials Research Tohoku University
  2. b Department of General Engineering National Institute of Technology Sendai College
  3. a Institute for Materials Research Tohoku University Sendai Japan
  4. c Eiwa Co. Ltd.
  5. d Department of Advanced Machinery Engineering School of Engineering Tokyo Denki University
  6. e Graduate School of Science and Engineering Ibaraki University
  7. f New Industry Creation Hatchery Center (NICHe) Tohoku University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2023.2281593
  CLC：
- Online First：20 November 2023，
  
  Published：2024
- 稿件说明：
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Kenta Yamanaka, Manami Mori, Daishin Yokosuka, et al. Effect of matrix dislocation strengthening on deformation-induced martensitic transformation behavior of metastable high-entropy alloys[J]. Materials Research Letters, 2024, 12(1): 1-9.
DOI：

Kenta Yamanaka, Manami Mori, Daishin Yokosuka, et al. Effect of matrix dislocation strengthening on deformation-induced martensitic transformation behavior of metastable high-entropy alloys[J]. Materials Research Letters, 2024, 12(1): 1-9. DOI： 10.1080/21663831.2023.2281593.

摘要

Abstract

In this study

we investigate the influence of dislocation strengthening in the metastable parent phase on the deformation-induced martensitic transformation behavior of a face-centered cubic (fcc) Co

high-entropy alloy. Annealed and hot-swaged specimens were prepared. In-situ neutron diffraction experiments captured an accelerated transformation kinetics in the hot-swaged specimen due to accumulated dislocations. The phase-specific macrostress development showed that the hexagonal close-packed ε-martensite predominantly accommodated the macroscopic plastic deformation of the annealed counterpart. Conversely

the matrix dislocation strengthening promoted cooperative plasticity of the γ-matrix and the ε-martensitic phase

thus enhancing yield stress while preserving ductility.

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Related Institution

State Key Laboratory of High-Performance Roll Materials and Composite Forming School of Materials Science and Engineering Hebei University of Technology

c Shanghai Key Laboratory of Advanced Ferrometallurgy Shanghai University

b State Key Laboratory of Materials for Advanced Nuclear Energy Shanghai University Shanghai People’s Republic of China

a School of Materials Science and Engineering Shanghai University Shanghai People’s Republic of China

d Institute of Materials Intelligent Technology Liaoning Academy of Materials

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