Properties analyses to Ag95CuNiLi filler metal on brazing titanium alloy to stainless steel Ⅱ

The Ag95CuNiLi brazing filler metal was made. Refer to concerned standards and test procedures, melting characteristic of the filler metal, tested the spreadability and clearance fillabitity for the filler metal on brazing titanium alloy to stainless steel were estimated, and mechanical properties of brazed joints were tested. Tesing results indicated that liquidus temperature of the filler metal was 918℃, that spreadability was good on titanium alloy and was difference on stainless steel, that slow-flow length was bigger than 100 mm, that tensile strength of brazed joints was 220 MPa. The microexamination to brazed joints examined that the bonding of the brazing filler metal and based material was all right, and three layers structure of intermetallics on the side of the stainless steel was formed, and the eutectic structure on the side of titanium alloy was formed. Light and electron microscopy, SEM, micro-hardness, tensile and shear testing were used to support the investigation.