MECHANISM OF FRACTURE PRODUCED BY FATIGUE CYCLING WITH A POSITIVE MEAN STRESS IN COPPER

被引：43

作者：

ECKERT, R

LAIRD, C

BASSANI, J

机构：

[1] Univ of Pennsylvania, Philadelphia,, PA, USA, Univ of Pennsylvania, Philadelphia, PA, USA

来源：

MATERIALS SCIENCE AND ENGINEERING | 1987年 / 91卷

关键词：

FRACTURE MECHANICS - METALS TESTING - Fatigue;

D O I：

10.1016/0025-5416(87)90285-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to investigate the mechanism of fracture in smooth specimens cycled with a large mean stress, pure polycrystalline copper was fatigued under different loading conditions. A two-stage Coffin-Manson plot was observed. The stage with the lower slope was correlated with a mechanism of cyclic creep fracture, which exhibits microfeatures similar to those of monotonic tension fractures. The other stage, having a greater slope, was correlated with a pure fatigue fracture mechanism.

引用

页码：81 / 88

页数：8

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