金属加工（热加工）Issue(5)：29-40,12.
钢/铝异种金属激光焊接界面组织调控机理与工艺优化研究进展
Research progress on interfacial microstructure control mechanisms and process optimization in laser welding of steel/aluminum dissimilar metals
摘要
Abstract
The joining of steel and aluminum dissimilar metals is regarded as a key technology for lightweight manufacturing in new energy vehicles and rail transit.The primary challenge lies in the formation and embrittlement control of Fe-Al intermetallic compounds(IMCs)at the interface.Laser welding,characterized by concentrated heat input and highly adjustable energy,is widely adopted as an effective approach for achieving high-quality metallurgical bonding.In this paper,recent research progress in steel/aluminum laser welding is systematically reviewed,with emphasis placed on interfacial microstructure regulation and performance enhancement,reflecting a transition from empirical parameter adjustment to mechanism-process synergistic optimization.The thermodynamics of IMCs phase formation and the fluid dynamic behavior of the molten pool are discussed.Furthermore,the strengthening and toughening mechanisms of advanced techniques are comparatively analyzed,including spatial beam modulation,hybrid physical field assistance,and interlayer metallurgical reconstruction(such as high-entropy alloys and nanoparticle reinforcement).Finally,existing limitations in current research are identified in the context of large-scale engineering applications,and future development directions are prospected.关键词
钢/铝异种材料/激光焊接/金属间化合物/界面调控/复合物理场/数值模拟Key words
steel/aluminum dissimilar materials/laser welding/intermetallic compounds/interfacial control/hybrid physical field/numerical simulation引用本文复制引用
王鑫,陈希章..钢/铝异种金属激光焊接界面组织调控机理与工艺优化研究进展[J].金属加工（热加工）,2026,(5):29-40,12.基金项目
国家自然科学基金资助项目(52575434). （52575434）
