【摘要】 铝/钢异种金属结构以其质量轻、设计柔性大的特点在航空航天领域尤其是大推力液体运载火箭输送管路中有着重要应用。相比于熔焊、钎焊等其他焊接方法，旋转摩擦焊可以实现铝/钢异种金属高质、高强、高可靠连接。本文基于对铝/钢异种金属焊接性分析，从工艺参数优化、界面显微组织分析、界面不均匀性调控和添加中间层金属冶金调控等方面综述了铝/钢异种金属旋转摩擦焊接技术研究进展，并对铝/钢异种金属旋转摩擦焊接技术发展趋势及亟须解决的科学问题进行了总结。更多还原

【Abstract】 Al alloy(Al)/steel dissimilar metals structures have a critical application in the aerospace industry,especially in the delivery pipeline of high thrust liquid launch vehicles. Compared with welding methods such as fusion welding and brazing, rotary friction welding can achieve a reliable joint between Al and steel with high quality, high strength and high corrosion resistance. The research progress of rotary friction welding of Al/steel dissimilar metals was reviewed from the optimization of welding process parameters, analyses of interface microstructures, control of interface inhomogeneity and metallurgical control by adding inter-layer metals. Finally, the development trends and scientific problems to be solved in rotary friction welding of Al/steel dissimilar metals were summarized.更多还原