Interface Microstructure of Al-Fe Tubes Joint by Magnetic Pulse Welding
Magnetic Pulse Welding(MPW)is a very high speed process which produces solid-state welds.In this work,Welding interface microstructure of Al/Fe tubes by MPW and its influence factors were investigated.The equipment with a capacitor of 100 μ F was used under different voltages range from 8kV to 15 kV.SEM and TEM observation were carried out to investigate microstructure of the welding interface.The results show that the dissimilar tubes(Al/Fe)could be welded with the optimum tapered angle of about 4 degree.The welding interface in Al/Fe joints exhibits a characteristic wavy morphology with wavelength of about 100 μm.A new layer exists between base tubes consisting of Al and Fe elements.Ultrafine grained microstructure is founded near the welding interface.The results obtain in this work provide the fundamentals for the investigation of MPW mechanism of dissimilar tubes.
magnetic pulse welding dissimilar materials ultrafine grained microstructure
XU Zhi-dan YU Hai-ping LI Chun-feng HAN Yu-jie
National Key Laboratory for Precision Hot Processing of Metals,Harbin Institute of Technology,Harbin National Key Laboratory for Precision Hot Processing of Metals,Harbin Institute of Technology,Harbin
国际会议
The 7th International Conference on Electromagnetic Processing of Materials(第七届冶金与材料电磁过程国际大会)
北京
英文
1-5
2012-10-22（万方平台首次上网日期，不代表论文的发表时间）