In-situ observation and modelling of intergranular cracking in polycrystalline alumina

被引：1
|
作者：
Marrow, T. James [1 ]
Gonzalez, David [1 ]
Aswad, Mohsin [1 ]
da Fonseca, Joao Quinta [1 ]
Withers, Philip J. [1 ]
机构：
[1] Univ Manchester, Mat Performance Ctr, Sch Mat, Manchester M13 9PL, Lancs, England
来源：
MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE | 2011年 / 465卷
基金：
英国工程与自然科学研究理事会;
关键词：
Alumina; Diffraction Contrast Tomography; Image-based modelling;
D O I：
10.4028/www.scientific.net/KEM.465.560
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A 3D model for intergranular thermal stresses in coarse polycrystalline alumina has been derived using Diffraction Contrast Tomography. Larger tensile thermal strains develop when the (0001) pole of adjacent grains lies closer to the grain boundary normal. This agrees with observations of cracked boundaries, obtained through digital image correlation of in-situ observations in fine alumina.
引用
收藏
页码：560 / 563
页数：4
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