Environmental effects on low cycle fatigue of 2024-T351 and 7075-T651 aluminum alloys

被引：21

作者：

Lee, E. U. ^{[1
]}

Vasudevan, A. K. ^{[2
]}

Glinka, G. ^{[3
]}

机构：

[1] USN, Air Warfare Ctr, Div Aircraft, Patuxent River, MD 20670 USA

[2] Off Naval Res, Arlington, VA 22203 USA

[3] Univ Waterloo, Waterloo, ON N2L 3G1, Canada

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2009年 / 31卷 / 11-12期

关键词：

Low cycle fatigue; Environmental effect; Strain amplitude; Fractographic features; CRACK-GROWTH; CORROSION-FATIGUE; ARREST; DAMAGE;

D O I：

10.1016/j.ijfatigue.2008.11.012

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The environmental effects on the low cycle fatigue (LCF) behavior of 2024-T351 and 7075-T651 aluminum alloys were studied at room temperature. The specimens were subjected to identical LCF tests at strain ratio R of -1 and frequency of 5 Hz in three environments: vacuum, air and 1% NaCl solution pH 2. A separate group of specimens was pre-corroded in 1% NaCl solution and then LCF-tested in air. Their strain-life relations and cyclic stress-strain responses were investigated and compared. Furthermore, the fracture surface morphology was evaluated to find the association of LCF behavior and fractographic features under different environmental conditions. Published by Elsevier Ltd.

引用

页码：1938 / 1942

页数：5

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