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Grain‐Size Dependence of Spontaneous Cracking in Ceramics
Author(s) -
RICE R. W.,
POHANKA R. C.
Publication year - 1979
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1979.tb12730.x
Subject(s) - cracking , materials science , anisotropy , grain size , crystal twinning , porosity , fracture (geology) , ceramic , stress (linguistics) , fracture mechanics , composite material , microstructure , physics , linguistics , philosophy , quantum mechanics
Models based on energy and stress considerations are applied to the phenomenon of spontaneous fracture of materials due to phase transformations and thermal expansion anisotropy. Results are shown to be in reasonable agreement with observations of the grain‐size dependence of such cracking and the effects of internal stresses on strength. The occurrence and effects of sequential cracking in highly anisotropic materials are considered. Effects of the degree of anisotropy, twinning, porosity, and second phases on such cracking are noted.