High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation

Xin Wang; Justin Cortez; Alexander D. Dupuy; Julie M. Schoenung; William J. Bowman

doi:10.1080/21663831.2022.2135409

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High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation

Original Reports | 更新时间：2026-08-19

- High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation
- High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation
- 材料研究快报（英文） 2023年11卷第3期页码：196-204
- 作者机构：
  
  1. a Department of Materials Science and Engineering University of California Irvine
  2. a Department of Materials Science and Engineering University of California Irvine CA USA
  3. b Irvine Materials Research InstituteUniversity of California Irvine
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2022.2135409
  中图分类号：
- 网络首发：2022-10-26，
  
  纸质出版：2023
- 稿件说明：
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Xin Wang, Justin Cortez, Alexander D. Dupuy, 等. High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation[J]. 材料研究快报（英文）, 2023,11(3):196-204.

Xin Wang, Justin Cortez, Alexander D. Dupuy, et al. High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation[J]. Materials Research Letters, 2023, 11(3): 196-204.
Xin Wang, Justin Cortez, Alexander D. Dupuy, 等. High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation[J]. 材料研究快报（英文）, 2023,11(3):196-204. DOI： 10.1080/21663831.2022.2135409.

Xin Wang, Justin Cortez, Alexander D. Dupuy, et al. High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation[J]. Materials Research Letters, 2023, 11(3): 196-204. DOI： 10.1080/21663831.2022.2135409.

摘要

Abstract

Despite their vast composition space and promising properties

little is known about the fundamental mechanical behavior of high entropy oxides (HEOs). Here we provide experimental evidence of the nanoscale origin of room temperature deformation in (Co

Zn)O HEOs with different grain sizes. We find that micron-grain (Co

Zn)O deforms predominately through extensive 12110{1–10} dislocation slip manifesting as discrete slip bands. Nano-grain (Co

Zn)O

in addition to moderate dislocation slip activity

deforms through grain boundary sliding and intergranular cracking. The significant dislocation-mediated deformation and grain size dependent behavior demonstrates that HEOs have the potential for diverse and highly tailorable mechanical behavior.

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references

Messerschmidt U. Dislocation dynamics during plastic deformation [Internet]. Berlin, Heidelberg: Springer Berlin Heidelberg; 2010 [cited 2022 Mar 21]. Available from: http://link.springer.com/10.1007978-3-642-03177-9(open in a new window). (Open in a new window)Google Scholar

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相关机构

a Beijing Key Laboratory of Microstructure and Property of Advanced Materials College of Materials Science and Engineering Beijing University of Technology Beijing People’s Republic of China

b Science and Technology on Advanced High Temperature Structural Materials Laboratory Beijing Institute of Aeronautical Materials

a Beijing Key Laboratory of Microstructure and Property of Advanced Materials College of Materials Science and Engineering Beijing University of Technology

c State Key Laboratory of Silicon Materials Department of Materials Science and Engineering Zhejiang University

d Department of Materials Science and Engineering Southern University of Science and Technology

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