Cu-AI过渡部件搅拌摩擦固相焊接与增材的研究进展

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Abstract： Copper-aluminum components have significant application value in electrical power and transportation field.However，due to the differences in the physical and chemical properties ofcopper and aluminum，a large numberof brittle intermetallic compounds （IMCs）at the joint interfacetend to beformed when the conventional fusion welding methods are used. Which leading to severe degradation of joint performance and limiting its application reliability.As advanced solid-state joining and forming techniques，friction stir welding （FSW）and friction stiradditive manufacturing （FSAM），characterized bylowheat input，can efectivelysuppress the formation of IMCs，ofering a feasible method for producing high-performance copper-aluminum components.This paper systematically reviews the relevant research progress，analyzes the process principles， technical characteristics， and application prospects，and identifies current major challenges.Furthermore，the mechanicalproperties， electricalproperties，thermal properties，and corrosion resistance of the joints are discussed and the formation mechanisms and control strategies of IMC sare summarized.Finaly，the future development directions of FSW and FSAM technologies for copper-aluminum components are discussed.

Keywords： friction stir welding; friction stir solid-state additive manufacturing; copper-aluminum dissimilar alloys; intermetallic compounds; performance control

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铜合金由于其优异的导电性、导热性及良好的耐腐蚀性能，成为导线、触头、接线端子等关键电气元件的首选材料[1]。（剩余14550字）