A MICROSCOPIC THEORY OF BRITTLE-FRACTURE IN DEFORMABLE SOLIDS - A RELATION BETWEEN IDEAL WORK TO FRACTURE AND PLASTIC WORK

被引：191

作者：

JOKL, ML

VITEK, V

MCMAHON, CJ

机构：

来源：

ACTA METALLURGICA | 1980年 / 28卷 / 11期

关键词：

D O I：

10.1016/0001-6160(80)90048-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

An empirical relationship between stress and dislocation velocity is employed to calculate the work connected with dislocation emission; then an approximation of the dynamics of bond stretching is made. Combination of the two allows development of a Griffith-type thermodynamic fracture criterion which is applicable to any deformable solid. This theory contains all the basic features of ductile vs brittle behavior of solids, regardless of whether the brittle mode is transgranular cleavage or intergranular fracture.

引用

页码：1479 / 1488

页数：10

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