Health & Environmental Research Online (HERO)


Print Feedback Export to File
7027502 
Journal Article 
Microstructure and mechanical property in laser welding-brazing of stainless steel and titanium alloy using 63Sn-37Pb alloy as filler metal 
Zhang, Yan; Chen, Y; Zhou, J; Sun, D; Li, H; , 
2020 
1 
Welding in the World
ISSN: 0043-2288 
SPRINGER HEIDELBERG 
HEIDELBERG 
257-266 
WOS:000498022900001 
Laser welding-brazing of TC4 titanium (Ti) alloy to 304 stainless steel (SS) has been applied using 63Sn-37Pb alloy as filler metal. A new welding process for SS-Ti alloy joint was introduced on the basis of the controlling the formation of Ti-Fe intermetallics in the joint. One process was one pass welding involving creation of a joint with one fusion weld and one brazed weld separated by remaining unmelted SS. When laser beam on the SS side was 1.4 mm, SS would not be completely melted in joint. Through heat conduction of unmelted SS, the filler metal melted occurred at the SS-Ti alloy interface. A brazed weld was formed at the SS-Ti alloy interface with the main microstructure of Fe3Sn+Fe3Sn2, (beta Sn, Pb), (beta Sn)+Sn2Fe, and (beta Sn)+Sn3Ti2. The joint fractured at the brazed weld with the maximum tensile strength of 108 MPa.