电焊机2025，Vol.55Issue(4)：64-72,9.DOI:10.7512/j.issn.1001-2303.2025.04.09
6061-T6铝合金静止轴肩搅拌摩擦焊角接接头焊接工艺研究
Research on the Welding Process of Corner Joint of 6061-T6 Aluminum Alloy with Stationary Shoulder Friction Stir Welding
张亚 1赵云峰 1戴忠晨 1孙博 2胡霞 2施海霞2
作者信息
- 1. 中车南京浦镇车辆有限公司,江苏 南京 210031
- 2. 航天工程装备(苏州)有限公司,江苏 苏州 215104
- 折叠
摘要
Abstract
In this study,the welding process of stationary shoulder friction stir welding 6061-T6 aluminum alloy corner joint was carried out,and the influence of different welding speeds(200,300,400 mm/min)and rotation speeds(2 500,2 750 and 3 000 r/min)on the macroscopic forming,microstructure and mechanical properties of the corner joint was investigated.The results demonstrate that,under the specified welding parameters,well-formed corner joints can be obtained without the pres-ence of holes or other defects,and that the welding process is stable.The average grain size of the stirring zone,width of the heat affected zone,and average grain size of the heat affected zone of SSFSW corner joints increase with the increase of welding heat input,and decrease with the decrease of welding heat input..The microhardness distribution of the welded joints exhibits a W-shaped pattern,with the hardness value of the heat-affected zone and overlapping of stir zone being rela-tively low,indicating a softening zone within the joint.As the heat input increases,the softening phenomenon in the afore-mentioned overlapping zone and heat-affected zone becomes more pronounced.关键词
静止轴肩搅拌摩擦焊/6061-T6铝合金/工艺参数优化/微观组织/力学性能Key words
stationary shoulder friction stir welding/6061-T6 aluminum alloy/optimization of process parameters/micro-structure/mechanical properties分类
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张亚,赵云峰,戴忠晨,孙博,胡霞,施海霞..6061-T6铝合金静止轴肩搅拌摩擦焊角接接头焊接工艺研究[J].电焊机,2025,55(4):64-72,9.
