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.
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页码：3952 / 3956
页数：4
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