电弧熔丝增材制造铝合金零件中气孔的研究现状  

Research Status on Pore in Aluminum Alloy Parts by Wire and Arc Additive Manufacturing

作　　者：聂文忠 曾嘉艺 李晓萱 邱渭濠 NIE Wenzhong;ZENG Jiayi;LI Xiaoxuan;QIU Weihao(School of Mechanical Engineering,Shanghai Institute of Technology,Shanghai 201418,China)

机构地区：[1]上海应用技术大学机械工程学院,上海201418

出　　处：《机械工程材料》2021年第11期97-102,共6页Materials For Mechanical Engineering

基　　金：上海市大学生创新活动计划项目(202010259097)。

摘　　要：电弧熔丝增材制造铝合金中的气孔会产生应力集中,导致初始裂纹萌生和扩展,造成力学性能变差。介绍了电弧熔丝增材制造铝合金零件中气孔缺陷形成的原因,阐述了保护气体、焊接速度、送丝速度、金属丝材、热输入、轧制和热处理等工艺条件对气孔率的影响,并对降低电弧熔丝增材制造铝合金零件中气孔率的今后研究方向进行了展望。The stress concentration generated by the pores in aluminum alloy by wire and arc additive manufacturing leads to the initiation and propagation of initial cracks, resulting in the deterioration of mechanical properties. The porosity formation cause of aluminum alloy parts by wire and arc additive manufacturing is introduced. The effects of shielding gas, welding speed, wire feeding speed, metal wire material, heat input, rolling and heat treatment on porosity are described. The future research direction of reducing porosity in aluminum alloy parts by wire and arc additive manufacturing is prospected.

关 键 词：电弧熔丝增材制造 铝合金 气孔 氢 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]