Combined Effect of In and Ce on Microstructure and Properties of Ag10CuZnSn Low-Silver Brazing Filler Metals

In this study, trace amounts of and Ce elements were composite added into a Ag10CuZnSn low-silver brazing filler metal, the effects alloying on solidus liquidus temperatures, spreading performance, microstructure mechanical properties joints prepared with these metals studied. The results reveal that element can significantly decrease temperatures alloy, while has little effect melting temperature. Trace obviously increase areas pure Cu 304 stainless steel base metals. refine When contents are 1.5 wt% 0.15 wt%, respectively, refinement is most obvious, shear strength brazed joint also achieves maximum value 375 MPa. Excessive addition form brittle intermetallic compounds in decreasing joints' strength.