On the strain rate-dependent deformation mechanism of CoCrFeMnNi high-entropy alloy at liquid nitrogen temperature

Jongun Moon; Sun Ig Hong; Jae Wung Bae; Min Ji Jang; Dami Yim; Hyoung Seop Kim

doi:10.1080/21663831.2017.1323807

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On the strain rate-dependent deformation mechanism of CoCrFeMnNi high-entropy alloy at liquid nitrogen temperature

Original Report | 更新时间：2026-08-19

- On the strain rate-dependent deformation mechanism of CoCrFeMnNi high-entropy alloy at liquid nitrogen temperature
- On the strain rate-dependent deformation mechanism of CoCrFeMnNi high-entropy alloy at liquid nitrogen temperature
- 材料研究快报（英文） 2017年5卷第7期页码：472-477
- 作者机构：
  
  1. Department of Materials Science and Engineering Pohang University of Science and Technology
  2. Department of Materials Science and Engineering Chungnam National University
  3. Department of Materials Science and Engineering Pohang University of Science and Technology Pohang Republic of Korea
  4. Center for High Entropy Alloys Pohang University of Science and Technology
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2017.1323807
  中图分类号：
- 网络首发：2017-05-15，
  
  纸质出版：2017
- 稿件说明：
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Jongun Moon, Sun Ig Hong, Jae Wung Bae, 等. On the strain rate-dependent deformation mechanism of CoCrFeMnNi high-entropy alloy at liquid nitrogen temperature[J]. 材料研究快报（英文）, 2017,5(7):472-477.

Jongun Moon, Sun Ig Hong, Jae Wung Bae, et al. On the strain rate-dependent deformation mechanism of CoCrFeMnNi high-entropy alloy at liquid nitrogen temperature[J]. Materials Research Letters, 2017, 5(7): 472-477.
Jongun Moon, Sun Ig Hong, Jae Wung Bae, 等. On the strain rate-dependent deformation mechanism of CoCrFeMnNi high-entropy alloy at liquid nitrogen temperature[J]. 材料研究快报（英文）, 2017,5(7):472-477. DOI： 10.1080/21663831.2017.1323807.

Jongun Moon, Sun Ig Hong, Jae Wung Bae, et al. On the strain rate-dependent deformation mechanism of CoCrFeMnNi high-entropy alloy at liquid nitrogen temperature[J]. Materials Research Letters, 2017, 5(7): 472-477. DOI： 10.1080/21663831.2017.1323807.

摘要

Abstract

BSTRACTIn the present work

the deformation mechanisms of the CoCrFeMnNi high-entropy alloy at 77 K were investigated using thermal activation analyses. The strain rate jump test was performed to estimate strain rate sensitivity and the activation volume of the alloy. Transmission electron microscopy analyses were performed to identify the evolution of twins at low temperatures. The insensitivity of activation volume to strain observed in the CoCrFeMnNi alloy at 77 K was different from the observed increase in the activation volume with strain at room temperature

which occurred due to the shearing of nanoscale inhomogeneities

such as co-clusters and short-range orders.

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相关机构

Department of Nuclear Science and Technology Xi'an Jiaotong University

a School of Materials Science and Engineering Beijing Institute of Technology

a School of Materials Science and Engineering Beijing Institute of Technology Beijing People’s Republic of China

b Tangshan Research Institute Beijing Institute of Technology Tangshan People’s Republic of China

c National Key Laboratory of Science and Technology on Materials under Shock and Impact Beijing Institute of Technology Beijing People’s Republic of China

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