Corrosion fatigue crack growth of 7475 T7351 aluminum alloy under flight simulation loading

被引：12

作者：

Chemin, A. ^{[1
]}

Spinelli, D. ^{[1
]}

Bose, W. Filho ^{[1
]}

Ruchert, C. ^{[1
]}

机构：

[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mat Engn, Av Joao Dagnone,1100 Jd Sta Angelina, BR-13563120 Sao Paulo, Brazil

来源：

3RD INTERNATIONAL CONFERENCE ON MATERIAL AND COMPONENT PERFORMANCE UNDER VARIABLE AMPLITUDE LOADING, VAL 2015 | 2015年 / 101卷

关键词：

Corrosion fatigue; aluminum alloy; flight load;

D O I：

10.1016/j.proeng.2015.02.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion crack propagation experiments were carried out on specimens of 7475 T7351 aluminum alloy. Variable amplitude tests were performed with flight-simulated spectrum Twist (Transport Aircraft Wing Structures) and Falstaff (Fighter Aircraft Loading Standard for Fatigue) exposed to air and saline environment. The results showed that fatigue crack propagation life of specimens tested on saline environment were longer than specimens tested on air environment. The fatigue surfaces of specimens tested on saline environment examined in the SEM showed oxide and Na crystals in the wake of crack, which can promote retardation of crack propagation. (C) 2015 The Authors. Published by Elsevier Ltd.

引用

页码：85 / 92

页数：8

共 11 条

[1] Transgranular environment-induced cracking of 7050 aluminium alloy under cyclic loading conditions at low frequencies [J].