Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy

Q. F. He; J. F. Zeng; S. Wang; Y. F. Ye; C. Zhu; T. G. Nieh; Z. P. Lu; Y. Yang

doi:10.1080/21663831.2016.1269026

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Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy

Original Report | 更新时间：2026-08-19

- Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy
- Materials Research Letters Vol. 5, Issue 5, Pages: 300-305(2017)
- 作者机构：
  
  1. Centre for Advanced Structural Materials Department of Mechanical and Biomedical Engineering City University of Hong Kong Kowloon
  2. Department of Materials Science and Engineering University of Tennessee Knoxville
  3. State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2016.1269026
  CLC：
- Online First：15 December 2016，
  
  Published：2017
- 稿件说明：
移动端阅览
Q. F. He, J. F. Zeng, S. Wang, et al. Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy[J]. Materials Research Letters, 2017, 5(5): 300-305.
DOI：

Q. F. He, J. F. Zeng, S. Wang, et al. Delayed plasticity during nanoindentation of single-phase CoCrFeMnNi high-entropy alloy[J]. Materials Research Letters, 2017, 5(5): 300-305. DOI： 10.1080/21663831.2016.1269026.

摘要

Abstract

BSTRACTSpherical nanoindentation was performed at room temperature to characterize the time-dependent plasticity behavior of the single-phase CoCrFeMnNi high-entropy alloy (HEA). It was observed that incipient plasticity occurred after a period of waiting time in the apparent elastic regime. Through the experimental data

an activation energy ∼0.74 eV and an activation volume ∼1.54

(

= Burgers vector) were extracted for the delayed plasticity. Our results indicate that heterogeneous dislocation nucleation governs the delayed plasticity in the single-phase CoCrFeMnNi

and also provide quantitative insights into viscoplastic behavior and creep mechanisms in HEAs.

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