Delamination of Sensitized Al-Mg Alloy During Fatigue Crack Growth in Room Temperature Air

被引：0

作者：

Justin K. Brosi

S. Mohsen Seifi

John J. Lewandowski

机构：

[1] Case Western Reserve University,Department of Materials Science & Engineering

[2] Bettis Atomic Power Laboratory,undefined

来源：

Metallurgical and Materials Transactions A | 2012年 / 43卷

关键词：

Fatigue; Fatigue Crack Growth; Thermal Exposure; Fatigue Threshold; Fatigue Crack Growth Behavior;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Fatigue crack growth experiments in air at 295 K (22 °C) were conducted on 6.35 mm thick plate samples of a commercial Al-Mg alloy machined from the L-T orientation. Thermal exposures for times up to 2000 hours at 343 K, 353 K, 373 K, and 448 K (70 °C, 80 °C, 100 °C, and 175 °C) produced sensitization and delamination in the S-T plane during fatigue testing, dependent on the level of thermal exposure and Kmax employed. Identical tests conducted in a “dry” environment produced no delamination, indicating that environment may enhance the phenomena.

引用

页码：3952 / 3956

页数：4

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