3mm厚6061铝合金板固定双轴肩搅拌摩擦焊接头的显微组织与拉伸性能  

Microstructure and Tensile Properties of Fixed Bobbin Friction Stir Welding Joint of 6061 Aluminum Alloy Plate with Thickness of 3 mm

作　　者：苏斌[1] 贺地求[1] 杨坤玉[1] 叶绍勇[1] 赖瑞林[1] 祝建明[1] 

机构地区：[1]中南大学高性能复杂制造国家重点实验室,长沙410083

出　　处：《机械工程材料》2013年第5期59-61,共3页Materials For Mechanical Engineering

基　　金：国家重点基础研究发展计划资助项目(2010CB731704)

摘　　要：采用固定双轴肩搅拌摩擦焊接技术对3mm厚6061铝合金板进行了拼焊试验,对其接头的显微组织与拉伸性能进行了研究。结果表明:在转速为1 500r.min-1、焊速为120mm.min-1的工艺参数下得到了良好的焊缝组织,焊接接头的抗拉强度为162.49 MPa;焊接高温时6061铝合金在空气中易氧化,导致焊缝截面出现明显的S线。Fixed bobbin friction stir welding process was used to weld 6061 aluminum alloy plates with thickness of 3 ram, and microstructure and tensile properties of joint were studied. The results show lhat good microstructure of weld seam was obtained under the welding rate of 120 mm·min^-1, and the tensile entrapment appeared in cross seelion of welded seam process parameters of rotation speed of 1 500 r·min^-1 and strength of welded joint was 162. 49 MPa. Obvious oxide because 6061 aluminum alloy was easy to be oxidized in air.

关 键 词：固定双轴肩搅拌摩擦焊 6061铝合金 S线 显微组织 

分 类 号：TG453[金属学及工艺—焊接]