电焊机2024，Vol.54Issue(12)：1-7,7.DOI:10.7512/j.issn.1001-2303.2024.12.01
焊接工具偏移对双轴肩搅拌摩擦焊S线形态与接头力学性能的影响
Influence of Welding Tool Offset on the Morphology and Mechanical Properties of Biaxial Shoulder Friction Stir Welding S-line
摘要
Abstract
The traditional biaxial shoulder friction stir welding(BT-FSW)and the novel offset biaxial shoulder friction stir welding(OBT-FSW)methods were used to weld 6005-T6 aluminum alloy profiles,and the effects of the two methods on in-terface material flow,"S"line morphology,and joint mechanical properties were compared and analyzed.In OBT-FSW,the welding tool is offset a certain distance towards the retreating side to enhance the stirring effect on the oxide film at the bonding interface.To simulate and compare the stirring effects of the two welding methods on the oxide film at the bonding interface,a welding emergency stop experiment was designed,and the distribution of weld elements and joint fracture mor-phology were observed using a scanning electron microscope.The results show that the traditional BT-FSW method causes the oxide film at the bonding interface to bend towards the retreating side and bypass the stirring pin,eventually forming a continuous"S"line in the stirring zone;OBT-FSW can enhance the stirring effect on the oxide film at the bonding interface by offsetting the welding tool a certain distance towards the retreating side(RS),forming a dispersed"S"line in the stirring zone,thereby eliminating the adverse effect of the"S"line on the joint mechanical properties.The tensile strength and elon-gation of OBT-FSW joints are significantly improved,the fluctuation of tensile properties is significantly reduced,effec-tively improving the mechanical properties of the joints.关键词
双轴肩搅拌摩擦焊(BT-FSW)/偏移双轴肩搅拌摩擦焊(OBT-FSW)/"S"线/氧化膜/力学性能Key words
biaxial shoulder friction stir welding(BT-FSW)/off-set biaxial shoulder friction stir welding(OBT-FSW)/"S"line/oxide film/mechanical properties分类
矿业与冶金引用本文复制引用
赵运强,闫德俊,蒋勇刚,王春桂,邓军,徐光周..焊接工具偏移对双轴肩搅拌摩擦焊S线形态与接头力学性能的影响[J].电焊机,2024,54(12):1-7,7.基金项目
国家重点研发计划(2023YFE0201500) （2023YFE0201500）
广东省舰船先进焊接技术企业重点实验室基金(2023B1212070026) （2023B1212070026）
广东省科学院发展专项资金项目(2022GDASZH-2022010203) （2022GDASZH-2022010203）
东莞市重点领域研发项目(20201200300122) （20201200300122）
