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경량화를 위한 마그네슘합금의 레이저 용접성에 관한 연구
김종도(Jong-Do Kim),이정한(Jung-Han Lee),심기홍(Gi-Hong Sim),장동환(Dong-Hwan Jang) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
Magnesium has been gained increased attention in recent years as a structural metal, especially in the automotive industry. These alloys have higher strength/weight ratio, heat conductivity and recyclability compare to other alloys. To fully benefit from the whole designing potential of this material, joining processes have to be developed. Laser welding turns out to be very suitable to join magnesium parts. Because laser welding allows, in comparison to conventional welding techniques like MIG and TIG welding, a low thermal load when joining the components. This paper presents the laser weldability of magnesium alloy by CW Nd:YAG laser. The mechanical properties of the joints are investigated, and the possibilities of industrial use are presented.