Research progress in selective laser melting forming of aluminum alloy
Aluminum alloys have been widely used in fields such as aerospace and automotive manufacturing due to their advantages of low density,high specific strength,and strong corrosion resistance. However,with the increasing demand for complex and precise components of high-strength aluminum alloys,traditional manufactur-ing processes can no longer meet the requirements. Metal additive manufacturing technology can solve the prob-lems of difficult forming of complex components and numerous internal defects after forming,showing signifi-cant application prospects. Among them,selective laser melting (SLM) technology is commonly used for 3D printing and forming of metal materials,which can achieve integrated near net forming of complex parts. The alu-minum alloy samples manufactured by SLM have advantages such as fewer internal defects,excellent mechanical properties,and high surface quality. This article outlines the characteristics and technical principles of SLM form-ing aluminum alloy process,the main problems and effective solutions to control defects. It focuses on the research progress of SLM technology for several typical aluminum alloys and their composite materials,introduc-es the latest research trends at home and abroad,looks forward to future development trends.
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