Effect of process parameters on weld quality by friction stir welding of 2219 aluminum alloy  

作　　者：杜岩峰 田志杰 高培涛 张彦华 

机构地区：[1]Beihang University, Beijing, 100083. [2]Capital Aerospace Machinery Corporation, Beijing, 100076.

出　　处：《China Welding》2011年第2期12-16,共5页中国焊接（英文版）

摘　　要：In the friction stir welding （FSW） process, welding speed and tool rotation speed are two important parameters, which have great effect on the weld quality. Because neither of each parameter can ensure the welding process effectively, an energy factor n, which is the ratio of rotation speed（to） to welding speed （v）, was selected to represent the heat generation intensity. According to this energy input factor n, the effect of heat input on the weld quality was estimated qualitatively. The results show that the optimized scope for the factor n should be within 2. 5 and 6. 0, outside of which groove defects and burr defects will appear.In the friction stir welding （FSW） process, welding speed and tool rotation speed are two important parameters, which have great effect on the weld quality. Because neither of each parameter can ensure the welding process effectively, an energy factor n, which is the ratio of rotation speed（to） to welding speed （v）, was selected to represent the heat generation intensity. According to this energy input factor n, the effect of heat input on the weld quality was estimated qualitatively. The results show that the optimized scope for the factor n should be within 2. 5 and 6. 0, outside of which groove defects and burr defects will appear.

关 键 词：friction stir welding process parameters weld formation tensile strength 

分 类 号：TG453.9[金属学及工艺—焊接] TG441.7