Visualization of dislocations through electron channeling contrast imaging at fatigue crack tip, interacting with pre-existing dislocations

Kishan Habib; Motomichi Koyama; Toshihiro Tsuchiyama; Hiroshi Noguchi

doi:10.1080/21663831.2017.1392370

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Visualization of dislocations through electron channeling contrast imaging at fatigue crack tip, interacting with pre-existing dislocations

Original Report | 更新时间：2026-08-19

- Visualization of dislocations through electron channeling contrast imaging at fatigue crack tip, interacting with pre-existing dislocations
- Visualization of dislocations through electron channeling contrast imaging at fatigue crack tip, interacting with pre-existing dislocations
- 材料研究快报（英文） 2018年6卷第1期页码：61-66
- 作者机构：
  
  1. Department of Mechanical Engineering Kyushu University
  2. Department of Materials Science and Engineering Kyushu University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2017.1392370
  中图分类号：
- 网络首发：2017-10-25，
  
  纸质出版：2018
- 稿件说明：
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Kishan Habib, Motomichi Koyama, Toshihiro Tsuchiyama, 等. Visualization of dislocations through electron channeling contrast imaging at fatigue crack tip, interacting with pre-existing dislocations[J]. 材料研究快报（英文）, 2018,6(1):61-66.

Kishan Habib, Motomichi Koyama, Toshihiro Tsuchiyama, et al. Visualization of dislocations through electron channeling contrast imaging at fatigue crack tip, interacting with pre-existing dislocations[J]. Materials Research Letters, 2018, 6(1): 61-66.
Kishan Habib, Motomichi Koyama, Toshihiro Tsuchiyama, 等. Visualization of dislocations through electron channeling contrast imaging at fatigue crack tip, interacting with pre-existing dislocations[J]. 材料研究快报（英文）, 2018,6(1):61-66. DOI： 10.1080/21663831.2017.1392370.

Kishan Habib, Motomichi Koyama, Toshihiro Tsuchiyama, et al. Visualization of dislocations through electron channeling contrast imaging at fatigue crack tip, interacting with pre-existing dislocations[J]. Materials Research Letters, 2018, 6(1): 61-66. DOI： 10.1080/21663831.2017.1392370.

摘要

Abstract

The dislocation pattern at the tip of a non-propagating fatigue crack in an Fe-25Cr-1N steel (mass%) was characterized by electron channeling contrast imaging. Planar dislocation arrays on two different slip planes were observed at the crack tip. Each planar dislocation array acts as a barrier to the motion of the other planar dislocations on different slip planes

contributing to the enhancement of the resistance to the crack propagation.

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references

Cleveringa HHM, Van Der Giessen E, Needleman A. A discrete dislocation analysis of residual stresses in a composite material [Article]. Philos Mag A. 1999;79(4):893–920. (Open in a new window)Google Scholar

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