TC4/Cu/ZQSn10-2-3扩散连接工艺参数分析  

Analysis on diffusion bonding Parameter of TC4 to ZQSn10-2-3 with Cu as interlayer

作　　者：赵贺[1] 曹健[1] 冯吉才[1] 吴宝泉 

机构地区：[1]哈尔滨工业大学现代焊接生产技术国家重点实验室,150001 [2]黑龙江省航道局,哈尔滨市150026

出　　处：《焊接》2010年第1期49-51,共3页Welding & Joining

基　　金：国家自然科学基金资助项目(50375065;50805038)

摘　　要：采用纯铜箔作中间过渡层在真空下对钛合金TC4与锡青铜ZQSn10-2-3异种材料进行扩散连接,用扫描电镜对连接接头进行微观分析,用抗剪试验获得接头强度。结果表明:采用铜箔作中间过渡层,可防止一些低熔点组元的挥发,并且可以阻止某些元素(Sn、Ph等)向钛合金基体扩散,从而避免更多金属间化合物的产生,可以实现TC4与ZQSn10-2-3的有效连接,并且试样无明显变形;在连接压力P=10 MPa下,连接温度过低(过高)或连接时间过短(过长)均使接头性能(抗剪强度)较差;在最佳工艺参数下,连接温度T=830℃,连接时间t=30 min,连接压力p=10 MPa,可获得最高力学性能,接头抗剪强度T_(max)=196 MPa。Diffusion bonded joints of TC4 and ZQSnl0-2-3 are prepared with Cu foil as an interlayer in vacuum.The microstructure ot transition joints was investigated with scanning electron microscope and energy dispersive spectrometry.The joint strength was tested by shear test. Using Cu foil as the interlayer,the diffusion of element Sn and Pb from ZQSn10-2-3 to TC4 can be avoided,and there are less intermetallic compounds occurrence in the interface.Sound joint of TC4 and ZQSn10-2-3 can be gotten.At 10MPa of pressure,lower bonding temperature and shorter bonding time will make the joint strength worse.While with the optimum parameters of 830℃,30 minutes and 10 MPa obtained by experiments, the maximum shear strength is 196 MPa.

关 键 词：钛合金 锡青铜 扩散连接 铜中间层 金属间化合物 

分 类 号：TG457.1[金属学及工艺—焊接]