Elements Diffusion and Mechanical Properties of 15-5PH Stainless Steel Joint Brazed with BNi-2 Filler Metal
The effects of brazing time on elements diffusion and bonding strength of vacuum brazed joints of 15-5PH stainless steel using filler metal BNi-2 were investigated. The results showed that the brazing time determined the content of diffused elements. If holding time is short the distribution of melting point depressants (MPD) concentrated on the middle zone of the joint, and the generation of brittle phases in the joint was unavoidable. With increasing time, MPD can diffuse to base metal adequately and full solid solution of nickel formed in the brazing joint. Joint strength firstly increased and then decreased with prolonging holding time.
Prof. Yafang Han, Ying Wu, Guangxian Li, Fu Sheng Pan, Runhua Fan and Xuefeng Liu
Q. Q. Sun and S. Lu, "Elements Diffusion and Mechanical Properties of 15-5PH Stainless Steel Joint Brazed with BNi-2 Filler Metal", Materials Science Forum, Vol. 850, pp. 700-705, 2016