无针搅拌摩擦焊技术研究进展和展望

Research Progress and Prospects of Pinless Friction Stir Welding Technology

鉴于无针搅拌摩擦焊受到国内外越来越多学者的关注与研究,在文献分析的基础上对无针搅拌摩擦焊进行了分类和总结,综述了无针搅拌摩擦焊在搭接点焊和对接走焊两种焊接形式下国内外的最新研究成果。分析了接头强度的影响因素,并对其焊接过程中微观组织、典型缺陷的变化以及接头内部金属塑性流动进行了阐述。

In view of the fact that pinless friction stir welding has attracted more and more scholars’attention and research in China and abroad,pinless friction stir welding was classified and summarized on the basis of literature analysis.The latest research results in China and abroad of overlap spot welding and butt welding by pinless friction stir welding were reviewed.The influencing factors of joint strength were analyzed,and the changes of microstructure,typical defects and the metal plastic flow inside the joint during the welding process were elaborated.