6063铝合金接触反应钎焊接头组织及晶界渗透行为研究  

Study of Joint Microstructure and Grain Boundary Penetration Behavior in 6063 Al Alloy Contact Reactive Brazing

作　　者：浦娟[1] 吴铭方[1] 袁媛[1] 

机构地区：[1]江苏科技大学 先进焊接技术省级重点实验室,江苏镇江212003

出　　处：《稀有金属材料与工程》2007年第A03期168-171,共4页Rare Metal Materials and Engineering

基　　金：江苏省重点实验室船舶先进制造技术资助项目(JKLSDT-02-01)

摘　　要：采用Cu箔及Cu箔-Mg粉-Cu箔作为反应层材料,在特定的工艺参数条件下,对6063铝合金进行了真空接触反应钎焊试验,初步分析探讨了钎缝微观组织结构和晶界渗透现象。研究结果表明,单层Cu箔形成的钎缝组织由α-Al固溶体和CuAl_2金属间化合物构成,晶界渗透现象较为严重:使用Cu箔-Mg粉-Cu箔形成的接头组织由Al(Mg,Cu)固溶体、CuAl_2二元金属间化合物、复杂三元金属间化合物及Al_2MgO_4构成,接触反应层中加入Mg粉,晶界渗透出现滞后现象。Test of 6063 Al alloy contact reactive brazing has been conducted in the case of special brazing parameters, using Cu foil and Cu foil-Mg power-Cu foil as reaction layer material, the microstructure and grain boundary penetration phenomena were analyzed and discussed primarily. The results show that the brazing seam structure consists of α-Al solid solution and CuAl2 intermetallic compound when one Cu foil is used, with great grain boundary penetration phenomena; the brazed seam microstructure joined by Cu foil-Mg power-Cu foil consists of Al（Mg, Cu） solid solution, CuAl2 binary intermetallic compound, complicated ternary intermetallic compound and Al2MgO4. And the grain boundary penetration phenomena are delayer when Mg power is entered into the contact reaction layer.

关 键 词：6063铝合金 接触反应钎焊 组织 晶界渗透 

分 类 号：TG407[金属学及工艺—焊接]