MODEL FOR THE HIGH-TEMPERATURE EMBRITTLEMENT OF METALS CONTAINING HELIUM

被引：62

作者：

TRINKAUS, H

ULLMAIER, H

机构：

[1] Institut für Festkörperforschung der Kernforschungsanlage, Jülich

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1979年 / 39卷 / 05期

关键词：

D O I：

10.1080/01418617908239292

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A model for the high-temperature embrittlement of He-containing metals is presented. The model is based on the formation of small He bubbles within the grains and on the nucleation and growth of grain-boundary cavities under the influence of He and external stress. These processes explain the strengthening of the grains and the simultaneous weakening of the grain boundaries. After a careful analysis of nucleation and growth of grain-boundary cavities, an analytical expression for the time to rupture as a function of stress, He content, temperature and material parameters is derived. This expression is in satisfactory agreement with experimental data for He-implanted stainless steel samples (Sagüés, Schroeder, Kesternich and Ullmaier 1978). © 1979 Taylor & Francis Group, LLC.

引用

页码：563 / 580

页数：18

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