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.

引用

页码：561 / 575

页数：15

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