Repetitive Ultra-low Stress Induced Nanocrystallization in Amorphous Cu‒Zr‒Al Alloy Evidenced by in situ Nanoindentation

Y. Liu; J. Jian; J.H. Lee; C. Wang; Q.P. Cao; C. Gutierrez; H. Wang; J.Z. Jiang; X. Zhang

doi:10.1080/21663831.2014.911778

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Repetitive Ultra-low Stress Induced Nanocrystallization in Amorphous Cu‒Zr‒Al Alloy Evidenced by in situ Nanoindentation

Original Reports | 更新时间：2026-08-19

- Repetitive Ultra-low Stress Induced Nanocrystallization in Amorphous Cu‒Zr‒Al Alloy Evidenced by in situ Nanoindentation
- Repetitive Ultra-low Stress Induced Nanocrystallization in Amorphous Cu‒Zr‒Al Alloy Evidenced by in situ Nanoindentation
- 材料研究快报（英文） 2014年2卷第4期页码：209-216
- 作者机构：
  
  1. Department of Materials Science and Engineering Texas A&M University College Station
  2. International Center for New Structured Materials Zhejiang University Hangzhou People's Republic of China,310027
  3. Laboratory of New Structured Materials Department of Materials Science and Engineering Zhejiang University
  4. Department of Electrical Engineering Texas A&M University College Station
  5. Department of Materials Science and Engineering Texas A&M University College Station 43 USA,TX778
  6. Department of Mechanical Engineering Texas A&M University College Station
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2014.911778
  中图分类号：
- 网络首发：2014-05-12，
  
  纸质出版：2014
- 稿件说明：
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Y. Liu, J. Jian, J.H. Lee, 等. Repetitive Ultra-low Stress Induced Nanocrystallization in Amorphous Cu‒Zr‒Al Alloy Evidenced by in situ Nanoindentation[J]. 材料研究快报（英文）, 2014,2(4):209-216.

Y. Liu, J. Jian, J.H. Lee, et al. Repetitive Ultra-low Stress Induced Nanocrystallization in Amorphous Cu‒Zr‒Al Alloy Evidenced by in situ Nanoindentation[J]. Materials Research Letters, 2014, 2(4): 209-216.
Y. Liu, J. Jian, J.H. Lee, 等. Repetitive Ultra-low Stress Induced Nanocrystallization in Amorphous Cu‒Zr‒Al Alloy Evidenced by in situ Nanoindentation[J]. 材料研究快报（英文）, 2014,2(4):209-216. DOI： 10.1080/21663831.2014.911778.

Y. Liu, J. Jian, J.H. Lee, et al. Repetitive Ultra-low Stress Induced Nanocrystallization in Amorphous Cu‒Zr‒Al Alloy Evidenced by in situ Nanoindentation[J]. Materials Research Letters, 2014, 2(4): 209-216. DOI： 10.1080/21663831.2014.911778.

摘要

Stress driven nucleation of nanocrystals in amorphous alloys has been a subject of intensive debate in the past decade.

It has long been postulated that nanocrystals form succeeding the occurrence of shear bands in deformed amorphous alloys. In this study

we show

via

in situ

nanoindentation of amorphous Cu

alloy in a transmission electron microscope that the formation of nanocrystals occurred at an ultra-low stress of 0.25 GPa in the elastic deformation regime

accompanied by load-drops without evidence of shear bands. Furthermore

during successive loading

repetitive nanocrystal nucleation events were observed

and the stress required for nucleation kept on increasing to ∼0.54 GPa

implying the occurrence of a ‘hardening’ effect in the amorphous alloy. This study provides direct evidence to advance our understanding on deformation-induced nanocrystallization of amorphous alloys.

Abstract

Stress driven nucleation of nanocrystals in amorphous alloys has been a subject of intensive debate in the past decade. It has long been postulated that nanocrystals form succeeding the occurrence of shear bands in deformed amorphous alloys. In this study

we show

via

in situ

nanoindentation of amorphous Cu

alloy in a transmission electron microscope that the formation of nanocrystals occurred at an ultra-low stress of 0.25 GPa in the elastic deformation regime

accompanied by load-drops without evidence of shear bands. Furthermore

during successive loading

repetitive nanocrystal nucleation events were observed

and the stress required for nucleation kept on increasing to ∼0.54 GPa

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