TiB_(2)增强铝基复合材料FSW流动行为  

Flow behavior of TiB_(2)reinforced aluminum matrix composite in FSW

作　　者：梁子剑 孙焕焕[1] 蒋鹏 王崭 刘易麟 赵亮[1] LIANG Zijian;SUN Huanhuan;JIANG Peng;WANG Zhan;LIU Yilin;ZHAO Liang(School of Materials Science and Engineering,Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,沈阳110159

出　　处：《焊接》2025年第1期64-70,共7页Welding & Joining

基　　金：辽宁省科学技术计划项目(2022-MS-275)。

摘　　要：【目的】研究搅拌摩擦焊(Friction stir welding,FSW)焊接稳态时TiB_(2)/7050铝基复合材料各区域的流动状态,探究焊接工艺参数对材料流动状态及焊缝成形的影响。【方法】采用数值模拟的方法建立有限元模型,并进行实际焊接试验验证。【结果】材料流动速度在轴肩边缘处最高,且在纵向上随着深度的递增,材料流动速度逐渐减小;材料在搅拌头前进侧(AS)和后退侧(RS)分布不均匀;搅拌头转速比焊接速度对材料流动速度的影响更大,焊接速度对材料的流动轨迹的影响更为明显。【结论】搅拌头转速为800 r/min,焊接速度在200~300 mm/min焊接工艺参数下可得到成形良好的焊接接头。[Objective]The flow state of various regions of TiB_(2)/7050 aluminum matrix composite material during steady-state friction stir welding(FSW)was investigated in order to explore the influence of welding parameters on the material flow state and weld formation.[Methods]A finite element model was established by using numerical simulation,and actual welding experiments were conducted for verification.[Results]The material flow velocity was highest at the edge of shaft shoulder,and gradually decreased with increasing depth in the vertical direction.The material was unevenly distributed on the advancing side(AS)and retreating side(RS)of the stirring tool.The rational speed of the stirring tool had a greater impact on flow velocity than the welding speed,but the welding speed had a more significant impact on the flow trajectory.[Conclusion]The excellent welded joints could be obtained under a stirring head rotating speed of 800 r/min and a welding speed between 200~300 mm/min.

关 键 词：搅拌摩擦焊 数值模拟 焊接试验 流场 焊接工艺参数 

分 类 号：TG457.1[金属学及工艺—焊接]