Corrosion-Fatigue Life Prediction for 2024-T62 Aluminum Alloy Using Damage Mechanics-Based Approach

被引：27

作者：

Hu, W. P. ^{[1
]}

Shen, Q. A. ^{[1
]}

Zhang, M. ^{[1
]}

Meng, Q. C. ^{[1
]}

Zhang, X. ^{[1
]}

机构：

[1] Beihang Univ, Div 508, Inst Solid Mech, Beijing 100191, Peoples R China

来源：

INTERNATIONAL JOURNAL OF DAMAGE MECHANICS | 2012年 / 21卷 / 08期

关键词：

corrosion-fatigue; damage mechanics; fatigue; life prediction; pre-corrosion-fatigue; STEEL; BEHAVIOR; GROWTH;

D O I：

10.1177/1056789511432791

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An approach based on the continuum damage mechanics was applied to predict corrosion-fatigue crack initiation life of 2024-T62 aluminum alloy. A fatigue test in air, a pre-corrosion-fatigue test, and a corrosion-fatigue test on smooth standard specimens were performed. The fatigue lives are strongly reduced by the corrosive environment of 5 wt.% NaCl continuous salt spray compared with non-corroded specimens. Damage evolution models for fatigue in air and pre-corrosion-fatigue of smooth specimens were established, which forms the basis for solving the corrosion-fatigue problem. Finally, the method of corrosion-fatigue life prediction was presented. The predictions comply with the experimental data.

引用

页码：1245 / 1266

页数：22

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