The application of transient thermal tensioning for improving fatigue crack growth resistance of AA5083-H116 FSW joints by varying secondary heating temperature

被引：11
作者：
Ilman, M. N. [1 ]
Sehono [1 ]
Muslih, M. R. [2 ]
Wibowo, H. [1 ]
机构：
[1] UGM, Dept Mech & Ind Engn, Yogyakarta, Indonesia
[2] Natl Nucl Energy Agcy Indonesia BATAN, Serpong, Banten, Indonesia
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2020年 / 133卷 / 133期
关键词：
Friction stir welding; Residual stress; Transient thermal tensioning; Fatigue crack growth rate; RESIDUAL-STRESS; BUCKLING DISTORTION; ALUMINUM; WELDS; BEHAVIOR; MIG; PROPAGATION; PERFORMANCE;
D O I：
10.1016/j.ijfatigue.2019.105464
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this work, transient thermal tensioning (TIT) treatments were applied to friction stir welding of AA5083-H1116 plates at various secondary heating temperatures of 100, 200 and 300 degrees C with the primary aim of gaining better fatigue crack growth performance. Fatigue crack growth tests were conducted with a constant amplitude load on centre crack tension (CCT) and single edge cracked tension (SECT) specimens. Results show that TIT treatments modify the distribution of residual stresses and cause microstructural changes. These two factors strongly influence fatigue performance of the weld joints and mechanisms of the fatigue crack growth are discussed in this investigation.
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页数：11
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