Influence of ultrasonic vibrations on the microstructure and mechanical properties of Al/Ti friction stir lap welds
超声振动对Al / Ti搅拌摩擦搭接焊缝组织和力学性能的影响
作者: Mingrun YuHongyun ZhaoFei XuTiejue ChenLi ZhouXiaoguo SongNinshu Ma
作者单位: 1State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, China
2Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, China
3Joining and Welding Research Institute, Osaka University, Osaka, 567-0047, Japan
刊名: Journal of Materials Processing Tech., 2020, Vol.282
来源数据库: Elsevier Journal
DOI: 10.1016/j.jmatprotec.2020.116676
关键词: Friction stir lap weldingUltrasonic assistanceAl/Ti dissimilar weldMicrostructureMechanical properties
原始语种摘要: Abstract(#br)Al/Ti dissimilar welds were fabricated by ultrasonic vibrations assisted friction stir welding, which eliminated the tool wear and enhanced the material flow. The peak temperature was lowered, and a pre-heating period was introduced into welding by ultrasonic vibrations. Wider interface and smaller grain structures were observed in the welds due to the reinforced material flows. Ti fragments were spun into the Al alloy, resulting in a mixing zone beside the interface. Atomic diffusion was also enhanced with ultrasonic vibrations, according to the element maps. The strength of the Al/Ti welds was doubled with the influence of ultrasonic vibrations. The fracture was nucleated at the interface and propagated into the base materials. Shear dimple was the dominant characteristic...
全文获取路径: Elsevier  (合作)
影响因子:1.953 (2012)

  • ultrasonic 超音波的
  • properties 道具
  • friction 摩擦
  • mechanical 机械的
  • microstructure 微结构
  • material 充填料
  • dissimilar 不同的
  • doubled 复式的
  • fabricated 制造
  • welding 熔结