摘要
回填式搅拌摩擦点焊与传统搅拌摩擦点焊相比,焊缝表面平整、焊点中心没有退出凹孔,具有突出的技术优势,在搅拌摩擦焊尾孔修补等场合尤其具有应用前景。对近年来回填式搅拌摩擦点焊技术研究新进展进行了评述,包括焊接设备开发、焊接过程和成形机理研究、焊缝组织与力学性能分析以及异种材料连接研究,指出焊接机器人、匙孔封闭工艺、焊缝疲劳性能以及铝合金与其他材料之间的连接应该作为重要发展方向。
Compared with traditional friction stir spot welding, refill friction stir spot welding can produce perfect weld without exit hole, so it has bright future in some cases including termination hole repair of friction stir welds. New research progress of refill friction stir spot welding in the recent years has been reviewed, such as development of welding equipment, study of welding process and forming mechanism, analysis of weld microstructure and mechanical performance,and exploration of dissimilar materials, in addition, several important fields are indicated which include welding robot,keyhole closure process, weld fatigue and bonding between Al with other material.
引文
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