6063铝合金搭接接头搅拌摩擦焊工艺研究  

Lap welding process of FSW for 6063 aluminum alloy

作　　者：赵勇[1] 杨刚[1] 乐文凯[1] 严铿[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：《江苏科技大学学报（自然科学版）》2011年第6期546-548,552,共4页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：江苏省自然科学基金资助项目(BK2010342);江苏省科技支撑计划(BE2009126);江苏科技大学本科生创新计划项目资助

摘　　要：针对6063铝合金薄板,采用搅拌摩擦焊的方法进行了搭接焊试验,通过对搭接接头成型时的特点及规律进行分析,研究了搭接焊过程中搅拌头转速、焊速等工艺参数对搭接焊缝质量的影响.结果表明:当焊接速度为150 mm/min,其他参数一定时,旋转速度在800～1 600 r/min范围变化,均能获得成型美观、性能良好的搭接接头,且拉伸试样均断在母材;旋转速度为1 600 r/min时,随着焊接速度由150 mm/min增加到230 mm/min,搭接接头的抗剪切力逐渐下降;焊核区的组织均匀、晶粒细小,其晶粒度远小于母材.The characteristics and principles of lap welding for aluminum alloy 6063 and the influences of weld- ing parameters including tool＇s rotational speed and welding velocity on the joint quality are investigated. The re- suits show that high strength joint can be obtained when welding velocity is 150 mm/min, tool＇s rotational speed is at the wide range of 800 - 1 600 r/rain. Simultaneously, strain fracture appears in base metal. When the rota- tion speed is 1 600 r/min and with the increasing of welding speed from 150 mm/min to 230 mm/min, the shearing strength of lap joints decreases gradually. The microstructure is homogeneous and the grain is fine in weld nugget zone. Moreover, the grain size is far finer than base metals.

关 键 词：6063铝合金 搅拌摩擦焊 搭接 抗剪力 

分 类 号：TG457.14[金属学及工艺—焊接]