CAJ | 학술논문

综述了近年来针对镁合金激光焊气孔问题的围内外研究进展,对镁合金激光焊气孔产生的原因、影响因素及防止措施进行了分析,认为由母材的制造工艺所决定的原始含气量是影响镁合金激光焊气孔倾向的主要因素,而针对不同含气量的母材需要采取不同的气孔防止措施.提出了压铸镁合金激光焊气孔防止技术的研究方向.
종술료근년래침대미합금격광한기공문제적위내외연구진전,대미합금격광한기공산생적원인、영향인소급방지조시진행료분석,인위유모재적제조공예소결정적원시함기량시영향미합금격광한기공경향적주요인소,이침대불동함기량적모재수요채취불동적기공방지조시.제출료압주미합금격광한기공방지기술적연구방향.
In this paper domestic and overseas research advance in porosity during laser welding of magnesium alloy is reviewed in the follow-ing aspects: reason, influencing factors and prevention measures of pore formation. It is considered that gas content of base metal determined by manufacture processes is the main influencing factor of tendency to pore formation during laser welding. Prevention measures of pore formation have to be carried out according to different gas content of base metal. At the same time the research direction of prevention of pore formation "during laser welding of die-cast magnesium alloys,which have high gas content,is put forward.