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回填式搅拌摩擦点焊的研究进展
石瑶,岳玉梅,吕赞
作者单位
石瑶,岳玉梅,吕赞  
摘要:
回填式搅拌摩擦点焊技术(RFSSW)是一种新型的固相点焊技术,它既拥有与搅拌摩擦焊(FSW)相同的效率高、能耗少、易操作和污染少等优点,又可消除匙孔,因此在航空、航天和汽车制造领域中有着广阔的应用前景。自发明以来,回填式搅拌摩擦点焊技术已被应用于各种铝合金、镁合金以及异种材料的焊接。文中综述了回填式搅拌摩擦点焊的研究进展,主要涉及回填式搅拌摩擦点焊的基本原理以及回填式搅拌摩擦点焊接头常见的缺陷、显微组织、力学性能,以及同、异种材料的回填式搅拌摩擦点焊工艺等内容,可对实际工程应用中提高回填式搅拌摩擦点焊接头性能以及合理选择回填式搅拌摩擦点焊工艺参数提供一定的借鉴作用。
关键词:  回填式搅拌摩擦点焊  匙孔  铝合金  显微组织  力学性能
DOI:
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基金项目:
Research situation on refill friction stir spot welding
Shi Yao, Yue Yumei, Lü Zan
Abstract:
Refill friction stir spot welding (RFSSW) is a new solid state spot joining technology. It not only owns the advantages of high efficiency, low energy consumption, easy operation and low contamination like friction stir welding (FSW), but also can eliminate the keyhole. Hence RFSSW has wide application prospect in aerospace and automobile fields. Since invention, RFSSW has been used to join all kinds of aluminum alloys, magnesium alloys and dissimilar alloys. This paper introduces the research situation of RFSSW, including principle, common defects, microstructure, mechanical properties, similar and dissimilar RFSSW process. This paper helps to improve joint mechanical properties and choosing appropriate welding parameters in actual engineering applications.
Key words:  refill friction stir spot welding  keyhole  aluminum alloy  microstructure  mechanical properties

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