流动摩擦焊接过程塑性金属流动行为  

Analysis of flow behavior of plastic metal in friction flow welding

作　　者：马正斌[1,2] 董春林[1,2] 王卫兵[1,2] 栾国红[1,2] 

机构地区：[1]中国航空工业集团公司 北京航空制造工程研究所,北京100024 [2]北京赛福斯特技术有限公司,北京100024

出　　处：《电焊机》2014年第4期50-53,共4页Electric Welding Machine

基　　金：航空基金资助项目(2012ZE25007)

摘　　要：搅拌工具端部形貌特征影响焊缝成形,工具端面的渐开线有利于焊接时塑性金属的流动,在焊缝的上部材料受到焊接工具的作用发生层流运动,材料由搅拌工具边缘向中心流动,而中心处聚集的材料挤压周边的材料向阻力小的方向运动,材料在厚度方向混合从而形成一个循环往复运动。同时采用数值模拟和实验手段对其进行了验证。The structure of top of tool has obviously effect on the weld formation, and the tool with involute spline is beneficial to the flow of plastic metal during friction flow welding. At the top of the weld surface, materials is subjected to the effect of weld tool transfer in the manner of laminar flow. Material moves from the tool edge to the center of weld, meanwhile, and the gathered material in the center of weld extrudes surrounding material towards the region of low resistance. Finally, there is a circular flowing in the thickness. In addition, the numerical simulation and experimental method are used to verify the phenomenon.

关 键 词：搅拌摩擦焊 流动摩擦焊 塑性金属 数值模拟 

分 类 号：TG453[金属学及工艺—焊接]