Ag-Cu-Zn-Sn-xGa-yIn钎料性能与显微组织  

Investigation on properties and microstructures of Ag-Cu-Zn-Sn-xGa-yIn filler metal

作　　者：赖忠民[1,2] 薛松柏[1] 张亮 皋利利[1] 顾立勇 顾文华 

机构地区：[1]南京航空航天大学材料科学与技术学院,南京210016 [2]江苏科技大学先进焊接技术省级重点实验室,江苏镇江212003 [3]常熟市华银焊料有限公司,江苏常熟215513

出　　处：《焊接学报》2010年第3期73-76,共4页Transactions of The China Welding Institution

基　　金：江苏科技大学先进焊接技术省级重点实验室开放课题资助项目(106220110)

摘　　要：通过对Ag-Cu-Zn-Sn-xGa-yIn钎料的钎焊试验发现:单独添加Ga或In元素时,Ga,In元素的添加量分别控制在3%,1.5%(质量分数)左右最佳;复合添加Ga与In元素时,Ag-Cu-Zn-Sn-3Ga-2In的力学性能最佳.对钎焊接头拉伸断口进行分析结果表明,Ag-Cu-Zn-Sn-3Ga-2In接头断口具备明显韧性断裂特征.当In元素添加量超过2%时,对钎焊接头强度的影响趋于平缓,但是断口已具有明显的解理形貌.Ga,In元素在钎料基体中分布均匀,无明显偏析现象,但是Ag-Cu-Zn-Sn-xGa-yIn钎料基体组织呈现明显的"骨架"状特征.The effect of Ga and/or In on the microstructures of Ag based filler metals for brazing as well as the properties of the brazed joints have been investigated in this paper. Brazed with brass as the base metal (butt joints), the results showed that, the optimum content of Ga and In in Ag-Cu-Zn-Sn-xGa-yIn filler metal was about 3% and 1.5% respectively, and the mechanical property of the Ag-Cu-Zn-Sn-3Ga-2In filler metal displayed the best value when the Ga and In were added into the filler metal simultaneously. When observing the tensile fracture of the butt joint brazed with Ag-Cu-Zn-Sn-3Ga-2In, it was found that the ductile fracture characteristics, when the content of In exceeded 2%, the dissociation morphology fracture would be emerged which had little influence on the tensile property of the brazed joints. The elements of Ga and In distributed uniformly, no segregation in the microstructure of the Ag-Cu-Zn-Sn-3Ga-2In filler metal was observed by SEM, and the significant 'framework ‘structure’ was found in the matrix.

关 键 词：银钎料 显微组织 镓 铟 

分 类 号：TG425[金属学及工艺—焊接]