(1. 中南大学 材料科学与工程学院，长沙 410083；
2. 湖南省电子封装与先进功能材料重点实验室，长沙 410083；
3. 中南大学 轻质高强结构材料国防科技重点实验室，长沙410083)
摘 要: 铝合金具有低密度、高强度和良好的耐蚀性等优点，是选区激光熔化技术的重要研究与应用方向之一。重点论述选区激光熔化技术的基本原理、优缺点和选区激光熔化铝合金的国内外研究概况，介绍选区激光熔化Al-Si、Al-Mg、Al-Cu和Al-Zn-Mg等合金体系，讨论粉末性能、工艺参数和热处理工艺等选区激光熔化铝合金的主要影响因素，分析选区激光熔化铝合金的存在问题并进行展望。
关键字: 增材制造；3D打印；选区激光熔化；铝合金；激光
（1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;
2. Key Laboratory of Electronic Packaging and Advanced Functional Materials, Central South University, Changsha 410083, China;
3. National Key Laboratory of Science and Technology for National Defence on High-strength Structural Materials, Central South University, Changsha 410083, China）
Abstract:Aluminum alloy has the advantages of low density, high strength and good corrosion resistance, which is one of the important research directions of selective laser melting. The basic principles, advantages and disadvantages of selective laser melting were discussed. Research situation in selective laser melted Al alloy was surveyed, and Al-Si, Al-Mg, Al-Cu and Al-Zn-Mg alloys were introduced. Factors related to microstructure and physical properties such as powder properties, process parameters and heat treatment were discussed. Finally, the relevant problems and development tendency were also addressed.
Key words: additive manufacturing; 3D printing; selective laser melting; aluminum alloy; laser
