Stainless steel is so different from aluminum alloys in physical and chemicalcharacters. When they are welded directly, there tend to be Al-Fe brittle compounds on the joint.This paper investigates the processing perf...Stainless steel is so different from aluminum alloys in physical and chemicalcharacters. When they are welded directly, there tend to be Al-Fe brittle compounds on the joint.This paper investigates the processing performance, interface microstructures and mechanicalproperties of aluminum alloys/stainless steel by way of brazing after brush plating a Ni/Cutransitional layer on stainless steel. After the joints are brazed with Al-Si-Cu-Mg-Zn foil brazingfiller metal on different brazing parameters, both the mechanical properties and the microstructuresare satisfactory for application. And the influence of the brazing parameters on bonding quality ofthe brazed joints is discussed in detail. The results reveal that no brittle Al-Fe intermetallicCompound is found in the interfaces. The Ni/Cu electroplating layer effectively hinders thediffusion of Fe atoms from SUS304 to 5A03. Though a little AlCu_3 brittle compound is produced, itsquantity is too small to affect the strength of the joint.展开更多
文摘Stainless steel is so different from aluminum alloys in physical and chemicalcharacters. When they are welded directly, there tend to be Al-Fe brittle compounds on the joint.This paper investigates the processing performance, interface microstructures and mechanicalproperties of aluminum alloys/stainless steel by way of brazing after brush plating a Ni/Cutransitional layer on stainless steel. After the joints are brazed with Al-Si-Cu-Mg-Zn foil brazingfiller metal on different brazing parameters, both the mechanical properties and the microstructuresare satisfactory for application. And the influence of the brazing parameters on bonding quality ofthe brazed joints is discussed in detail. The results reveal that no brittle Al-Fe intermetallicCompound is found in the interfaces. The Ni/Cu electroplating layer effectively hinders thediffusion of Fe atoms from SUS304 to 5A03. Though a little AlCu_3 brittle compound is produced, itsquantity is too small to affect the strength of the joint.
