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Friction stir welding and processing

机译：搅拌摩擦焊及加工

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Friction stir welding (FSW) is a relatively new solid-state joining process. This joining technique is energy efficient, environment friendly, and versatile. In particular, it can be used to join high-strength aerospace aluminum alloys and other metallic alloys that are hard to weld by conventional fusion welding. FSW is considered to be the most significant development in metal joining in a decade. Recently, friction stir processing (FSP) was developed for microstructural modification of metallic materials. In this review article, the current state of understanding and development of the FSW and FSP are addressed. Particular emphasis has been given to: (a) mechanisms responsible for the formation of welds and microstructural refinement, and (b) effects of FSW/FSP parameters on resultant microstructure and final mechanical properties. While the bulk of the information is related to aluminum alloys, important results are now available for other metals and alloys. At this stage, the technology diffusion has significantly outpaced the fundamental understanding of microstructural evolution and microstructure-property relationships.
机译：搅拌摩擦焊（FSW）是一种相对较新的固态连接工艺。这种连接技术节能高效，环境友好且用途广泛。特别是，它可以用来连接高强度的航空铝合金和其他金属合金，而这些金属很难通过常规的熔焊进行焊接。 FSW被认为是十年来金属连接领域最重要的发展。最近，摩擦搅拌工艺（FSP）被开发用于金属材料的微结构改性。在这篇评论文章中，介绍了FSW和FSP的当前理解和发展状态。已特别强调：（a）负责形成焊缝和微结构细化的机制，以及（b）FSW / FSP参数对所得微结构和最终机械性能的影响。尽管大部分信息与铝合金有关，但是对于其他金属和合金，现在也可以获得重要结果。在这个阶段，技术的普及已经大大超过了对微观结构演变和微观结构-性能关系的基本理解。

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