Discontinuous Yield Behaviors Under Various Pre-Strain Conditions in Metals with Different Crystal Structures

Michael R. Maughan; David F. Bahr

doi:10.1080/21663831.2015.1121166

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Discontinuous Yield Behaviors Under Various Pre-Strain Conditions in Metals with Different Crystal Structures

Original Reports | 更新时间：2026-08-19

- Discontinuous Yield Behaviors Under Various Pre-Strain Conditions in Metals with Different Crystal Structures
- Discontinuous Yield Behaviors Under Various Pre-Strain Conditions in Metals with Different Crystal Structures
- 材料研究快报（英文） 2016年4卷第2期页码：83-89
- 作者机构：
  
  School of Materials Engineering Purdue University W. Stadium Ave West Lafayette,701
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2015.1121166
  中图分类号：
- 网络首发：2015-12-20，
  
  纸质出版：2016
- 稿件说明：
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Michael R. Maughan, David F. Bahr. Discontinuous Yield Behaviors Under Various Pre-Strain Conditions in Metals with Different Crystal Structures[J]. 材料研究快报（英文）, 2016,4(2):83-89.

Michael R. Maughan, David F. Bahr. Discontinuous Yield Behaviors Under Various Pre-Strain Conditions in Metals with Different Crystal Structures[J]. Materials Research Letters, 2016, 4(2): 83-89.
Michael R. Maughan, David F. Bahr. Discontinuous Yield Behaviors Under Various Pre-Strain Conditions in Metals with Different Crystal Structures[J]. 材料研究快报（英文）, 2016,4(2):83-89. DOI： 10.1080/21663831.2015.1121166.

Michael R. Maughan, David F. Bahr. Discontinuous Yield Behaviors Under Various Pre-Strain Conditions in Metals with Different Crystal Structures[J]. Materials Research Letters, 2016, 4(2): 83-89. DOI： 10.1080/21663831.2015.1121166.

摘要

Abstract

Instrumented indentation was performed to determine the statistics of discontinuous yield behavior of Co and Ni pre-strained to various levels. In both materials

increasing pre-strain decreases the frequency of indentations that exhibit discontinuous yield. Yield events in Co occurred at nominally the same stress independent of pre-strain

suggesting dislocation nucleation dominates during contact loading and that the existing dislocations are strongly pinned in Co. However

in Ni yield occurred at lower loads with increasing pre-strain

suggesting that dislocation activation

rather than true nucleation

dominates the yield mechanism.

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Keywords

references

Askari H, Lambrosa T, Maughan M. Pop-in detection [Internet]. 2014. Available from: https://nanohub.org/resources/20804(open in a new window) (Open in a new window)Google Scholar

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相关机构

a Center for Advanced Solidification Technology (CAST) School of Materials Science and Engineering Shanghai University Shanghai People’s Republic of China

b State Key Laboratory of Advanced Special Steel School of Materials Science and Engineering Shanghai University Shanghai People’s Republic of China

c Univ. Lille CNRS INRAE Centrale Lille UMR 8207- UMET - Unité Matériaux et Transformations

b State Key Laboratory of Advanced Special Steel School of Materials Science and Engineering Shanghai University

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