Study on Brazability of Low-melting-point Ag-AI-Sn Brazing Filler

Two kinds of low-melting-point filler metals(Ag-8Al-6Sn and Ag-8Al-6Sn-1Ni) have been prepared. Based on the concerned national standards, the melting characteristic, the spreadability and the clearance fillabitity on and between the titanium alloy and stainless steel,and the strength of the joints between titanium alloy and stainless steel had been evaluated.. The results indicated that the Ag-8Al-6Sn-1Ni brazing filler has better brazing technological performance than the Ag-8Al-6Sn filler. The seam of the titanism and stainless steel joints was analyzed by metallographic examination and SEM. The results indicated that the brazed joints using the Ag-8Al-6Sn filler were reliable,and its organic property was favorable.