铁路车辆用铝合金型材搅拌摩擦焊缝相控阵超声检测  

Phased-array ultrasound testing of friction stirring weld of aluminum alloy sections for railway vehicles

作　　者：姜岩[1] 周广浩[2] 程志义[1] 

机构地区：[1]长春轨道客车股份有限公司质量保证部,吉林长春130062 [2]吉林大学材料科学与工程学院,吉林长春130025

出　　处：《物理测试》2015年第5期29-34,共6页Physics Examination and Testing

摘　　要：针对相控阵超声检测中斜入射横波模式进行了超声波检测试验,分析了斜入射横波模式对铝合金型材搅拌摩擦焊常见的隧道型孔洞和未焊透缺陷的检出能力。利用横孔、立孔模拟隧道型孔洞缺陷,利用立槽模拟未焊透缺陷。试验结果表明:对无焊缝型材隧道型孔洞和未焊透缺陷的检测都具有较好的检出能力;通过对不同类型缺陷的检测结果对比,证明了横孔缺陷的检出能力最好;通过对实际焊缝试件的检测,验证了斜入射横波模式能够有效地避免表面焊缝弧形波纹的影响。The ultrasonic test was conducted using the oblique incidence transverse wave mode of phased- array ultrasound testing. The detection capability of oblique incidence transverse wave mode to the common tunnel defects and incomplete welding defects in friction stirring weld of aluminum alloy sections was discussed. The cross hole and vertical hole were used to simulate the tunnel defects,and the vertical groove was used to simulate the incomplete welding defects. The test results showed that this method exhibited good capability to the detection of tunnel defects and incomplete welding defects of weldless sections. The detection results of different type of defects were compared. It proved that the detection capability of cross-hole defects was best. The testing results of real weld samples indicated that the oblique incidence transverse wave mode could effectively avoid the influence of arc corrugation on surface.

关 键 词：铝合金型材 搅拌摩擦焊 相控阵超声检测 斜入射横波 

分 类 号：TG441.7[金属学及工艺—焊接]