EFFECTS OF SEGREGATED IMPURITIES ON INTERGRANULAR FRACTURE ENERGY

被引：143

作者：

MCMAHON, CJ

VITEK, V

机构：

[1] Department of Metallurgy and Materials Science, University of Pennsylvania, Philadelphia

来源：

ACTA METALLURGICA | 1979年 / 27卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0001-6160(79)90002-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The segregation of metalloid impurities to grain boundaries of steel can result in reductions of fracture toughness of the order of 95%. It is shown that this can be caused by reductions in the work of ideally brittle fracture (i.e. the cohesive energy) of the order of 10%. This is based on the exponential dependence of the plastic work on the local stress field ahead of a brittle crack, which in turn can be related to the force-displacement curve for intergranular separation. © 1979.

引用

页码：507 / 513

页数：7

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MCMAHON, CJ ;

VITEK, V ;

BELTON, GR .

SCRIPTA METALLURGICA, 1978, 12 (09) :785-789

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