DISCLINATIONS, AMORPHIZATION AND MICROCRACK GENERATION AT GRAIN-BOUNDARY JUNCTIONS IN POLYCRYSTALLINE SOLIDS

被引：72
作者：
GUTKIN, MY
OVID'KO, IA
机构：
[1] Institute of Machine Science Problems, Russian Academy of Sciences, St. Petersburg, 199178, Bolshoj 61, Vas. Ostrov
来源：
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1994年 / 70卷 / 04期
关键词：
D O I：
10.1080/01418619408242248
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Splitting of disclinations (decay of disclinations into small-power disclinations) at grain boundary junctions in polycrystalline solids is examined theoretically, and related to local amorphization. Energetic characteristics of the splitting process are revealed. It is shown that such a process competes effectively with microcrack generation at triple junctions of grain boundaries, causing a plastification of deformed polycrystalline materials.
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页码：561 / 575
页数：15
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