大截面钢/铝异种金属摩擦焊接工艺研究  

Study on friction welding technology for large cross-section steel and Aluminum dissimilar metals

作　　者：王希靖[1] 商献伟[1] 张昌青[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050

出　　处：《电焊机》2010年第7期45-48,共4页Electric Welding Machine

摘　　要：采用连续驱动摩擦焊技术对大截面铸态纯铝与Q235钢异种金属进行了焊接工艺试验,通过扫描电镜(SEM)分析接头和断口形貌,测试接头力学性能及其电阻率,得到了纯铝与Q235钢焊接接头的力学性能与焊接参数的关系。结果表明,大截面铸态纯铝与Q235钢间具有良好的摩擦焊接性,焊接界面宏观断口呈均匀银灰色,焊接情况良好,具有100%焊合的特征;采用优化焊接工艺参数施焊的焊接接头力学性能可以达到或超过铝侧基材;接头电阻率介于两侧母材电阻率之间。For large cross-section cast aluminum and Q235 steel dissimilar metals,continuous drive friction welding technology has been used for welding test.By means of scanning electron microscopy（SEM）,we analyzed the joint and fracture morphology,and tested the mechanical properties of joints and its resistivity,got the relationship between welding parameters and mechanical properties of welded joints of cast aluminum and Q235 steel.The results showed that there had been a good friction welding properties between the large cross-section cast aluminum and Q235 steel.The macro-fracture surface at the welding interface was silver-gray uniformly.And the welding joint is in good condition,with 100% bonding characteristics.The mechanical properties of welded joints with optimization welding parameters can reach or exceed the aluminum substrate.The resistivity of welding joints is between aluminum and Q235 steel.

关 键 词：摩擦焊接 异种金属 大截面 电阻率 

分 类 号：TG453.9[金属学及工艺—焊接]