Paper Title:

Stiffness of Cermets Containing Interfacial Arc-Microcracks

Periodical Key Engineering Materials (Volumes 368 - 372)
Main Theme High-Performance Ceramics V
Edited by Wei Pan and Jianghong Gong
Pages 1625-1627
DOI 10.4028/www.scientific.net/KEM.368-372.1625
Citation Xiao Bo Lu et al., 2008, Key Engineering Materials, 368-372, 1625
Online since February, 2008
Authors Xiao Bo Lu, Xie Quan Liu, Bao Feng Li, Yun Xu Zhao
Keywords Arc-Microcrack, Cermet, Equivalent Eigen Strains, Stiffness
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Abstract

The interfacial arc-microcracks have large influence on the behaviors of cermets. The emerging cause of arc-microcracks is interpreted and the interaction between ceramic particles and arc-microcracks is accounted for determining the equivalent eigen strains by using the random two phase element method. Then the effective volumetric modulus and shear modulus of the cermets is estimated. The results show the effective volumetric modulus and shear modulus of the cermets is associated with the stiffness of the matrix and ceramic particles, the volume fractions of ceramic particles and arc-microcracks, the subtending angle and thickness of arc-microcrack..