防锈铝板/镀锌钢板异种金属冷金属过渡熔钎焊接头的组织与抗拉强度  

Microstructure and Tensile Strength of Rust-Proof Aluminum Plate and Zinc-Coated Steel Plates Braze-Weld Joint Prepared by Cold Metal Transfer

作　　者：冯曰海[1] 王克鸿[1] 高飞[1] 杜刚[1] 

机构地区：[1]南京理工大学材料科学与工程学院,南京210094

出　　处：《机械工程材料》2013年第6期89-92,共4页Materials For Mechanical Engineering

基　　金：国家部委资助项目(513180501);南京理工大学自主科研资助项目(2010ZYTS086)

摘　　要：采用冷金属过渡(CMT)熔钎焊接工艺,对LF21防锈铝板和DD51D+Z镀锌钢板进行了异种金属的连接,对接头的显微组织和抗拉强度进行了研究。结果表明:防锈铝板和镀锌钢板的熔钎焊接头的中间界面区化合物为4～6μm厚的FeAl3金属间化合物,接头的平均横向抗拉强度为77MPa,接头的强度系数为0.6。The cold metal transfer （CMT） brazing welding process w,＇ts used to weld clissimilar metals of LF21 rust-proof aluminum plate and DDS1D＋Z zinc coated steel plate, and the microstructure and tensile strength of the joint were studied. The results show that the compound layer of middle interface zone of the braze weld joint was intermetallic compound FeAl3 with thickness of 4-6 μm. The aw：rage transverse tensile strenglh of the joint was up to 77 MPa and strength coefficient was 0. 6.

关 键 词：显微组织 镀锌钢板 抗拉强度 冷金属过渡 

分 类 号：TG457[金属学及工艺—焊接]