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

被引：13

作者：

Brosi, Justin K. ^{[1
]}

Seifi, S. Mohsen ^{[1
]}

Lewandowski, John J. ^{[1
]}

机构：

[1] Case Western Reserve Univ, Dept Mat Sci & Engn, Cleveland, OH 44106 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2012年 / 43A卷 / 11期

关键词：

STRESS-CORROSION CRACKING; ALUMINUM-ALLOY; COMPOSITES; TOUGHNESS; BEHAVIOR; FRACTURE; AL-5083;

D O I：

10.1007/s11661-012-1361-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fatigue crack growth experiments in air at 295 K (22 A degrees 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 A degrees C, 80 A degrees C, 100 A degrees C, and 175 A degrees C) produced sensitization and delamination in the S-T plane during fatigue testing, dependent on the level of thermal exposure and K (max) 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：5

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