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

Journal article published in 2011 by Tj James Marrow, Jq da Fonseca, David Gonzalez, A. Aswad, Mohsin Aswad, Joao Quinta Da Fonseca ORCID, Pj J. Withers ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

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. ; Times Cited: 0 6th International Conference on Materials Structure and Micromechanics of Fracture Jun 28-30, 2010 Brno, CZECH REPUBLIC