Visualization of grain boundary/dislocation interactions using tomographic reconstructions

被引：37
作者：
Kacher, J. P. [1 ]
Liu, G. S. [1 ]
Robertson, I. M. [1 ]
机构：
[1] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA
来源：
SCRIPTA MATERIALIA | 2011年 / 64卷 / 07期
关键词：
Transmission electron microscopy; 3-D reconstruction; Dislocation; Grain boundary; DISLOCATION/GRAIN-BOUNDARY INTERACTIONS; ELECTRON-TOMOGRAPHY; SYSTEM; AL;
D O I：
10.1016/j.scriptamat.2010.12.020
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A combination of electron tomography, electron backscatter diffraction and traditional vertical bar g.b vertical bar analysis is used to characterize a dislocation transmission event across a Sigma 3 grain boundary in 304 stainless steel. The parallel {1 1 1} planes across a Sigma 3 boundary allow simultaneous imaging of dislocations in both grains. The interaction is explained in terms of residual strain energy density in the grain boundary due to the accommodation and emission of dislocations and the magnitude of the local shear stress. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：677 / 680
页数：4
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