Experimental Investigation of Fatigue Crack Growth Behavior in Friction Stir Welded 7075-T651 Aluminum Alloy Joints under Constant Stress Intensity Factor Range Control Testing (For LT Orientation Specimen)

被引：4
|
作者：
Jeong, Yeui Han [1 ]
Kim, Seon Jin [2 ]
机构：
[1] Pukyong Natl Univ, Grad Sch, Dept Mech Design Engn, Busan, South Korea
[2] Pukyong Natl Univ, Dept Mech & Automot Engn, Busan, South Korea
来源：
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A | 2013年 / 37卷 / 06期
关键词：
Fatigue Crack Growth; Friction Stir Welding; Constant Stress Intensity Factor Range Control Testing; 7075-T651 Aluminum Alloy;
D O I：
10.3795/KSME-A.2013.37.6.775
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this study, as a series of studies aimed at investigating the spatial randomness of fatigue crack growth for friction stir welded (FSWed) 7075-T651 aluminum alloy joints, the fatigue crack growth behavior of FSWed 7075-T651 aluminum alloy joints was investigated for LT orientation specimens. Fatigue crack growth tests were conducted under constant stress intensity factor range (SIFR) control for 5 specimens of the FSWed 7075-T651 aluminum alloy, including base metal (BM), heat affected zone (HAZ), and weld metal (WM) specimens. The mean fatigue crack growth rate of WM specimens was found to be the highest, whereas that of HAZ and WM specimens was the lowest. Furthermore, the variability of fatigue crack growth rate was found to be the highest in WM specimens and lowest in BM specimens.
引用
收藏
页码：775 / 782
页数：8
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