静止轴肩搅拌摩擦搭接接头的成形与冲击性能研究  

Formation and Impact Properties of Stationary Shoulder Friction Stir Lap Welding Joint

作　　者：王玉晓[1] 张利国[1] 周振鲁 吕赞[1] 

机构地区：[1]沈阳航空航天大学航空航天工程学部,辽宁沈阳110136

出　　处：《热加工工艺》2017年第21期162-164,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(51204111);航空基金资助项目(2014ZE54021)

摘　　要：以2024-T4铝合金为研究对象,研究了静止轴肩搅拌摩擦搭接焊接头的成形和冲击性能。结果表明,利用静止轴肩可获得表面无弧纹、小飞边、内部钩状缺陷和冷搭接高度较低的搭接接头。前进侧搅拌针作用区边缘的冲击韧性最低,焊核区次之,后退侧搅拌针作用区边缘与两侧的轴肩作用区边缘具有较高的冲击韧性。Taking 2024-T4 alumimum alloy as the research object, the formation and impact properties of the stationary shoulder friction stir lap welding joints were investigated. The results show that the lap joint without arc lines, small flash, internal hook and low cold lap height can be obtained by using the stationary shoulder. The impact toughness of the region near the pin affected zone boundary at the advancing side is the lowest, the weld nugget zone is second, and the regions near the pin affected zone boundary and the shoulder affected zone boundary on the both sides have relatively high impact toughness.

关 键 词：静止轴肩 搅拌摩擦搭接焊 冲击韧性 组织 

分 类 号：TG453.9[金属学及工艺—焊接]