Effects of delamination on the transient fatigue crack growth behaviour following overloads in 8090-T8 Al-Li alloys

被引：0

作者：

Kumai, S ^{[1
]}

Higo, Y ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,PRECIS & INTELLIGENCE LAB,MIDORI KU,YOKOHAMA,KANAGAWA 226,JAPAN

来源：

ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3 | 1996年 / 217卷

关键词：

Al-Li alloys; fatigue crack growth; overload; delamination; crack closure;

D O I：

10.4028/www.scientific.net/MSF.217-222.1371

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The transient growth rate response following a single tensile overload was examined using 8090-T8 AI-LI alloys. The overloads were applied either at 295 K or at 77 K under constant Delta K conditions to obtain two different crack tip conditions. A unique retardation behaviour was observed for the alloy overloaded at 77 K. This was attributed to the local laminar splitting due to the overload, i.e., delamination, ahead of the fatigue crack tip.

引用

页码：1371 / 1376

页数：6

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