摘要
针对笔者团队前期发明的超声振动强化搅拌摩擦焊(Ultrasonic Vibration enhanced FSW,UVeFSW)新工艺,从设备研发(超声振动装置的设计、超声振动参数的表征)、工艺试验(焊缝成形、微观组织、显微硬度、拉伸性能、疲劳性能)与机理探索(焊接载荷、焊接热循环、材料流动和组织演变)3方面,综述了UVeFSW新工艺的研究进展。结果表明,通过直接向搅拌头前方的待焊接工件上施加超声振动能场,改善焊缝成形,减少或消除焊接缺陷,拓宽焊接工艺参数窗口以及提高接头性能。
For ultrasonic vibration enhanced friction stir welding（UVeFSW） invented by the authors＇ group, this article reviewed the research progress of UVeFSW from 3 aspects of equipment development（including design of ultrasonic vibration system and parameter characterization of ultrasonic vibration）, welding test（including morphology, microstructure, micro-hardness, tensile performance and fatigue performance） and mechanism exploration（including welding loads, thermal cycle, material flow and microstructure evolution）. The results show that UVeFSW could improve the weld formation, reduce or even eliminate the void defect, widen the process-parameter window and improve the mechanical properties of the joint by directly applying ultrasonic vibration energy field to the workpiece to be welded in front of the rotating tool.
出处
《精密成形工程》
2017年第5期63-72,共10页
Journal of Netshape Forming Engineering
基金
先进焊接与连接国家重点实验室开放课题(AWJ-Z16-05)
关键词
搅拌摩擦焊
超声振动
焊缝成形
微观组织
力学性能
焊接载荷
热循环
材料流动
组织演变
friction stir welding
ultrasonic vibration
weld formation
microstructure
mechanical properties
welding load
thermal cycle
material flow
microstructure evolution
