焊接能量对铝/钛超声波焊接接头性能的影响  

Effect of Welding Energy on the Performance of the Al/Ti Joints Obtained by Ultrasonic Welding

作　　者：赵玉津 张慧敏[1,2] 罗震[1,2] 冯梦楠 郭客[3,4] Zhao Yujin;Zhang Huimin;Luo Zhen;Feng Mengnan;Guo Ke(School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China;Collaborative Innovation Center of Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China;School of Materials Science and Engineering,Liaoning University of Science and Technology,Anshan 114051,China;Anshan Iron and Steel Group Mining Design and Research Institute,Anshan 114004,China)

机构地区：[1]天津大学材料科学与工程学院,天津300072 [2]高新船舶与深海开发装备协同创新中心,上海200240 [3]辽宁科技大学材料科学与工程学院,鞍山114051 [4]鞍钢集团矿业设计研究院,鞍山114004

出　　处：《天津大学学报（自然科学与工程技术版）》2017年第1期43-48,共6页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目(51405334;51275342)~~

摘　　要：进行了1,mm 6061铝合金和0.4,mm纯钛异种金属超声波焊接试验研究,分析了不同焊接能量输入对焊接接头的力学性能、界面组织和原子扩散的影响.结果表明:在高频振动作用下,铝钛接触界面能够实现有效的连接;能量较小时接触界面呈现局部微连接,力学性能较低;随着能量的增大,接触界面有效连接区域逐渐增大,界面连接紧密,接头力学性能得到提高;然而能量过大时,接触界面会出现空穴等缺陷,反而导致力学性能下降.扫描电子显微镜和X射线能量散射谱分析表明,铝/钛连接界面区域没有明显的金属间化合物生成.An experimental investigation of ultrasonic welding of 1,mm thick 6061 aluminum alloy and 0.4,mm thick pure titanium was conducted.The mechanical properties of the welded joints,microstructure and atomic diffusion in the weld zone under different welding energy inputs were investigated.The results show that under high-frequency ultrasonic vibration,the interfaces between aluminum alloy and pure titanium are able to achieve reliable connection.When the energy is low,the interfaces of the work pieces present micro connection,and the mechanical property is poor.With the increasing of energy,the effective connection area of interface gradually increases,the interfaces of work pieces show tight connection,and the mechanical property increases. However,void effect is likely to appear and the mechanical property declines consequently if the energy is excessively high.Moreover,intermetallic compound (IMC)at the interfaces of the joints is not observed obviously through the scanning electron microscope (SEM)and energy-dispersive X-ray spectroscopy(EDS)analysis.

关 键 词：超声波焊接 异种金属 焊接能量 焊接接头性能 

分 类 号：TG453.9[金属学及工艺—焊接]