摘要
The dynamic process of welding angular distortion in the overlaying welding of 5A12 aluminum alloy and BT20 titanium alloy was investigated.Information of dynamic distortion was got via self-made welding dynamic measuring system.Research results show that the characteristics of dynamic distortions at various positions of the plate edge parallel to the weld of 5A12 and BT20 alloy are different.Comparison between 5A12 and BT20 alloy shows that transverse shrinkage and downward longitudinal bending are main factors influencing the dynamic angular distortion processes of 5A12 and BT20 alloy under welding heat input of 0.32 kJ/mm.The angular distortion of 5A12 alloy is completely inversed with welding heat input increasing to 0.4 kJ/mm,and the position of weld center and buckling distortion become the primary factors.
The dynamic process of welding angular distortion in the overlaying welding of 5A12 aluminum alloy and BT20 titanium alloy was investigated. Information of dynamic distortion was got via self-made welding dynamic measuring system. Research results show that the characteristics of dynamic distortions at various positions of the plate edge parallel to the weld of 5A12 and BT20 alloy are different. Comparison between 5A12 and BT20 alloy shows that transverse shrinkage and downward longitudinal bending are main factors influencing the dynamic angular distortion processes of 5A12 and BT20 alloy under welding heat input of 0.32 kJ/mm. The angular distortion of 5A12 alloy is completely inversed with welding heat input increasing to 0.4 kJ/mm, and the position of weld center and buckling distortion become the primary factors.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2008年第2期233-239,共7页
Transactions of Nonferrous Metals Society of China
基金
Project(50475093)supported by the National Natural Science Foundation of China
Project supported by the State Key Laboratory ofAdvanced Welding Production Technology,China
关键词
动力学过程
角扭曲
铝
钛
合金
焊接技术
dynamic distortion
5A12 aluminum alloy
BT20 titanium alloy
critical state
