Effects of Brazing Parameters on Microstructure and Mechanical Properties of Copper and Steel Brazed Joint
Copper and 1Cr18Ni9Ti were brazed using Ag-Cu eutectic filler metal at 1093～1223 K for 120～1500 s.The interface microstructure was investigated by scanning electron microscopy and electron energy spectrum analysis.The results show that the microstructure of the brazed joint is Cu/ Cu(s.s)/ Ag(s.s)+ Cu(s.s)/ 1Cr18Ni9Ti.The maximal shear strength of the welded joint is 214 MPa at 1173 K for 300 s.