工艺参数对铝合金FSW接头性能的影响  

Influence of Process Parameters on Pr operties of Aluminum Alloy FSW Joints

作　　者：尹欣[1] YIN Xin(Zhengzhou University of Aeronautics,Zhengzhou 450046,China)

机构地区：[1]郑州航空工业管理学院,河南郑州450046

出　　处：《机械工程与自动化》2020年第6期114-115,118,共3页Mechanical Engineering & Automation

基　　金：河南省高等学校重点科研项目(18A460007)。

摘　　要：研究了6061-T6铝合金的搅拌摩擦焊工艺参数对接头拉伸性能、硬度和微观组织的影响。研究结果表明:焊接过程中产生的热量不足会导致接头未能焊上,焊缝表面出现沟槽缺陷,降低接头的力学性能;产生的热量过多会致使热影响区晶粒粗大,降低接头的力学性能;在相同的焊速下,尽量选取较低的焊接旋转速度可以使焊缝与母材的硬度值更加接近,选用转速为800 r/min、焊接速度为200 mm/min时接头成型质量较好,抗拉强度较优。The effect of friction stir welding process parameters of 6061-T6 aluminum alloy on the tensile properties,hardness and microstructure of the joint was studied.The research results show that insufficient heat generated during the welding process will cause the joint to fail to be welded,and groove defects appear on the weld surface,which reduces the mechanical properties of the joint.Excessive heat generation will cause coarse grains in the heat-affected zone and reduce the mechanical properties of the joint.Under the same welding speed,try to choose a lower welding rotation speed to make the hardness value of the weld and the base metal closer.Selecting a rotation speed of 800 r/min and a welding speed of 200 mm/min have better joint forming quality and better tensile strength.

关 键 词：工艺参数 铝合金 FSW 力学性能 

分 类 号：TG457.14[金属学及工艺—焊接]