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Title of Article

NUCLEATION OF MICROCRACKS IN THE FRAGMENTED STRUCTURE


Issue
5
Date
2010

Article type
scientific article
UDC
539.4
Pages
90-94
Keywords
dislocation ensemble, disclinations, microcrack, elastic energy, fragmentation, screening


Authors
Sarafanov Georgiy Fedorovich
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo, Nizhegorodskiy filial Instituta mashinovedeniya im. A.A. Blagonravova RAN

Perevezentsev Vladimir Nikolaevich
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo, Nizhegorodskiy filial Instituta mashinovedeniya im. A.A. Blagonravova RAN


Abstract
Microcrack nucleation conditions in the elastic field of a disclination screened by a distributed dislocation charge have been considered. The threshold value of the disclination power at which a microcrack nucleates has been defined. The plastic deformation that screens the disclination elastic field has been shown to stabilize the microcrack growth up to sizes of about

File (in Russian)