On the Micromechanical Theories of Stress-Induced Cleavage Microcracking in Crystalline Solids

This paper is entirely dedicated to the subject of cleavage microfracture in crystalline solids at non-elevated temperatures. The significance of microcracking in determining the mechanical and fracture characteristics of crystalline solids is outlined. The micromechanics of stress-induced microcrac...

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Published inEngineering fracture mechanics Vol. 27; no. 2; pp. 215 - 230
Main Authors Sarfarazi, M, Ghosh, S K
Format Journal Article
LanguageEnglish
Published 01.01.1987
Subjects
fracture
mechanical properties
solids
stress
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Summary:This paper is entirely dedicated to the subject of cleavage microfracture in crystalline solids at non-elevated temperatures. The significance of microcracking in determining the mechanical and fracture characteristics of crystalline solids is outlined. The micromechanics of stress-induced microcracking in polycrystals MgO is reviewed, which occurs as a result of heterogeneous plasticity, due to dislocation pile-up at the grain boundaries. Alternative mechanisms of microcracking mostly pertinent to the cases of fracture of single crystals (Zn, Bi, beryllium, and steels) by the intersecting slip or twin bands, or through splitting of the dislocation walls, are also considered. Included is also a discussion of the fracture of polyphase crystalline solids. 69 ref.--AA
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0013-7944
DOI:10.1016/0013-7944(87)90170-6