Ag做中间层TC4和双相不锈钢的扩散连接  

Diffusion Bonding of TC4 and Duplex Stainless Steel Using Ag Interlayer

作　　者：黄晓英[1] 白莉[2] 刘蒙恩[1] 

机构地区：[1]重庆工业职业技术学院车辆工程学院,重庆401120 [2]重庆工业职业技术学院机械工程学院,重庆401120

出　　处：《热加工工艺》2016年第5期247-248,252,共3页Hot Working Technology

摘　　要：采用50μm厚纯Ag箔做中间层对TC4钛合金和2205双相不锈钢进行了扩散连接。试验发现,在900℃、5 MPa、5 min连接条件下,可以成功实现母材的连接。在TC4-Ag界面,生成了Ti Ag化合物。在Ag-2205双相不锈钢界面,没有形成化合物,由于Ag-Fe之间的相互扩散形成了可靠的冶金连接。在拉伸载荷下,接头沿剩余Ag中间层发生失效,接头强度达到了680 MPa。在接头断口发现大量韧窝,说明接头呈韧性。The diffusion bonding of TC4 alloy and 2205 duplex stainless steel using 50 μm thick pure Ag foil as interlayer was conducted. The results show that successful bonding can be achieved under bonding conditions of 900℃, 5MPa, 5 min. Ti Ag intermetallic phase forms at the TC4-Ag interface. No intermetallic phase is found at Ag-2205 interface and reliable metallurgical bonding can be achieved by inter-diffusion between Ag and Fe. Upon tensile loading, the joint fractures along the remnant Ag interlayer and the bonding strength of 680 MPa is achieved. Large populations of dimples are observed on the fracture surface, which indicates that the joint is ductile in nature.

关 键 词：钛合金 双相不锈钢 扩散连接 Ag中间层 力学性能 

分 类 号：TG453.9[金属学及工艺—焊接]