激光焊接技术在飞机结构损伤抢修中的应用  

Application of the Laser Welding Technique in Aircraft Structure Repair

作　　者：魏华凯[1] 管仁国[1] 温景林[1] 李俊鹏[1] 李罡[1] 

机构地区：[1]东北大学材料与冶金学院

出　　处：《轻合金加工技术》2005年第4期47-50,共4页Light Alloy Fabrication Technology

摘　　要：针对目前军用飞机铝合金结构件损伤抢修技术的弊端,提出采用激光焊接技术修复损伤的结构件,通过对Al 3Mg 0.5Sc合金和2A12(LY12)合金的焊接性能的试验研究表明:Al 3Mg 0.5Sc焊缝处的性能优于2A12的性能,Al 3Mg 0.5Sc与2A12激光对焊焊缝晶粒明显细化,显微硬度与基体硬度、抗拉强度与铆接强度均相当,Al 3Mg 0.5Sc合金可应用于飞机结构件的修复。Aiming at the deficiencies of the technical for repairing the aircraft aluminum alloy structure damages,the method of repairing the structure damages using laser welding was brought forward,the welding property of Al-3Mg-0.5Sc alloy and 2A12(LY12) alloy were studied.Results show that the welded joint property of Al-3Mg-0.5Sc is better than that of 2A12, the grain of welded joint between 2A12 and Al-3Mg-0.5Sc is obviously fine, micro-hardness,tensile strength of welded point are equivalent separately to the matrix alloy hardness.Al-3Mg-0.5Sc alloy can be used to repair the aircraft structure.

关 键 词：铝合金 激光 焊接 飞机结构 抢修 

分 类 号：TG456.7[金属学及工艺—焊接]