Interface Microstructure in Laser Welding-Brazing of AZ31B/TC4 Dissimilar Alloys

摘要

The interface microstructure in the joints of magnesium alloy AZ31 to Ti alloy by the laser welding-brazing (LWB) process have been investigated in this paper. The results indicated that the interface between the solder reaction and TC4 formed net and holes, there was a 1~2 urn intermetallic compound layer. Al-Mg-Zn compounds generated and distributed in the solder reaction zone.