The effect of pitting on the bending fatigue performance of high-strength aluminum alloy

被引：44
作者：
Genel, K. [1 ]
机构：
[1] Sakarya Univ, Dept Engn Mech, TR-54187 Adapazari, Turkey
来源：
SCRIPTA MATERIALIA | 2007年 / 57卷 / 04期
关键词：
fatigue; 7075-T6; pitting corrosion; crack initiation; CRACK INITIATION; CORROSION; BEHAVIOR; 7075-T6; PARTICLES;
D O I：
10.1016/j.scriptamat.2007.04.045
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of pitting on the bending fatigue performance of high-strength aluminum alloy has been investigated by conducting a series of rotary bending fatigue tests at 95 Hz. From pitting corrosion studies, it was observed that coarse constituent particles play the main role in the pitting process. The results obtained from fatigue tests revealed that the fatigue strength, based on a fatigue life of 10(7) cycles, was dramatically reduced by the presence of pitting. The reduction in fatigue life depended on the severity of pitting; an approximately 60% decrease in fatigue strength was obtained. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：297 / 300
页数：4
相关论文
共 9 条
[1]   Electrochemical behavior and localized corrosion associated with Al7Cu2Fe particles in aluminum alloy 7075-T651 [J].
Birbilis, N. ;
Cavanaugh, M. K. ;
Buchheit, R. G. .
CORROSION SCIENCE, 2006, 48 (12) :4202-4215
[2]   Effect of pitting corrosion on fatigue life [J].
Dolley, E.J. ;
Lee, B. ;
Wei, R.P. .
Fatigue and Fracture of Engineering Materials and Structures, 2000, 23 (07) :555-560
[3]   Fatigue crack growth from corrosion damage in 7075-T6511 aluminium alloy under aircraft loading [J].
DuQuesnay, DL ;
Underhill, PR ;
Britt, HJ .
INTERNATIONAL JOURNAL OF FATIGUE, 2003, 25 (05) :371-377
[4]   Statistical analysis of constituent particles in 7075-T6 aluminum alloy [J].
Harlow, D. G. ;
Wang, M. Z. ;
Wei, R. P. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2006, 37A (11) :3367-3373
[5]   On fatigue crack initiation from corrosion pits in 7075-T7351 aluminum alloy [J].
Pao, PS ;
Gill, SJ ;
Feng, CR .
SCRIPTA MATERIALIA, 2000, 43 (05) :391-396
[6]   Corrosion fatigue crack initiation in aluminum alloys 7075 and 7050 [J].
Pao, PS ;
Feng, CR ;
Gill, SJ .
CORROSION, 2000, 56 (10) :1022-1031
[7]   Effects of pitting corrosion on the fatigue behavior of aluminum alloy 7075-T6: modeling and experimental studies [J].
Sankaran, KK ;
Perez, R ;
Jata, KV .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 297 (1-2) :223-229
[8]   Effect of pitting corrosion on very high cycle fatigue behavior [J].
Wang, QY ;
Kawagoishi, N ;
Chen, Q .
SCRIPTA MATERIALIA, 2003, 49 (07) :711-716
[9]   A transmission electron microscopy study of constituent-particle-induced corrosion in 7075-T6 and 2024-T3 aluminum alloys [J].
Wei, RP ;
Liao, CM ;
Gao, M .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1998, 29 (04) :1153-1160
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