摘要
采用Ag-Cu-Ti钎料对TC4钛合金进行真空钎焊;采用金相分析、扫描电镜对钎缝的组织结构、元素分布情况进行分析,并对焊件的整体力学性能进行拉伸测试。结果表明,TC4合金板真空钎焊搭接接头处抗剪强度在200MPa以上,钎焊接头处总体的力学性能优于母材;钎缝与基体相临的部位析出了弥散相,钎缝处有Cu的固溶体析出;焊接接头中的主要元素Ti、Al、V、Ag、Cu呈规律性分布,钎缝及扩散区域得到以细小笋状的方式生长的Cu基固溶体,是为Ag-Cu共晶组织。
Vacuum brazing of TC4 was carried out with Ag-Cu-Ti filler metal.Organizational structure,element distribution of brazed joints were investigated by means of scanning electron microscopy and metallographic microscope,and the joint whole mechanical property was determined by tensile testing method.The results show that shear strength for the brazing joint of TC4 titanium alloy is above 200MPa and whole mechanical property of the brazing joint are better than base metal.Dispersed network phase form between base metal and brazing seam,and Cu-based solid solution separate out in the brazing seam.Ti,Al,V,Ag and Cu of the brazing joint were regular distribution.Ag-Cu eutectic structure of brazing seam and diffuse region were grown by slender and small bamboo shoots mode.
出处
《价值工程》
2013年第22期48-50,共3页
Value Engineering
