超声振动对铝合金搅拌摩擦焊焊缝成形的影响  

Effect of ultrasonic vibration on friction stir weld formation of aluminum alloys

作　　者：王怡嵩[1] 孟强[1] 刘小超[2] 钟益斌[2] 武传松[2] 

机构地区：[1]北京赛福斯特技术有限公司,101107 [2]山东大学材料连接技术研究所,济南市250061

出　　处：《焊接》2015年第3期35-39,70-71,共5页Welding & Joining

摘　　要：通过超声工具头直接将超声振动施加在搅拌头前方的待焊工件上,在超声振动的条件下对工件进行搅拌摩擦焊,并开展了试验研究,考察了超声振动对6 mm厚6061-T6铝合金平板搅拌摩擦焊焊缝表面成形、截面轮廓、内部缺陷的影响。试验结果表明,施加超声使焊缝表面成形更加光滑美观,接头搅拌区的体积有所增大,在部分工艺参数下能够消除焊缝内部产生的孔洞缺陷。The ultrasonic vibration is directly exerted on the localized region of workpiece in front of the FSW tool,and FSW tests are conducted under the condition of ultrasonic vibration.The effect of ultrasonic vibration on weld morphology,macro-section and inner defects are analyzed.Experimental results show that the exerted ultrasonic vibration can make the weld surface formation more smooth,enlarge the stirred zone,and eliminate the cavity defects inside the weld under some sets of process parameters.

关 键 词：铝合金 超声振动 搅拌摩擦焊 焊缝成形 

分 类 号：TG442[金属学及工艺—焊接]