Brazing titanium alloy and stainless steel with copper-based filler metal

摘要

The experimental study on vacuum brazing of titanium alloy and stainless steel using copper-base filler metal is conducted, and the influence of brazing process on the properties of titanium alloy and the brazed joint is analyzed, the microstructure of brazed joint is observed. The result indicates that the brazing process used in this study has little effect on the property of titanium alloy, but has obvious effect on the property of brazed joint of titanium alloy and stainless steel. Based on the microstructure analysis, the vacuum brazed joint can be divided into three zones, which are the transient zone between filler metal and Titanium alloy base metal, the filler metal layer, and the inter-metallic compound layer between filler metal layer and Stainless steel. The inter-metallic compound is composed of brittle phases, and will affect on the joint property. The results are generally essential for the bonding of dissimilar materials such as Titanium alloy and Stainless Steel etc.