Study of tool Penetration Behavior in Dissimilar Al5083 /C10100 Friction Stir Spot Welds
Study of tool Penetration Behavior in Dissimilar Al5083 /C10100 Friction Stir Spot Welds
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DOI：
10.1016/j.proeng.2016.12.209
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
S. Siddharth;T. Senthilkumar
中科院分区：
文献类型：
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作者：
S. Siddharth;T. Senthilkumar
搅拌摩擦点焊是一种先进的固态材料连接技术，由于其可以有效地用于具有不同机械和冶金特性的异种材料的点连接，因此在汽车和航空航天工业中获得了广泛的普及。在这项研究中，铝5083和C10100铜接头的异种搅拌摩擦点焊（1.5mm厚）使用由H13工具钢材料制成的非消耗性工具制成，具有圆柱形平直几何形状，肩部直径为16mm，针直径为6 mm，针长度为1.5 mm。工具在顶部的刺穿和穿刺的效果（Al）通过改变主要的搅拌摩擦点焊工艺参数，如工具旋转速度、停留时间和插入深度，对板和底部Cu板的摩擦点焊进行了分析。通过研究焊接区摩擦热引起的材料流动，分析了顶部铝板、底部铜板顶侧的飞边形成程度。使用SEM分析了界面处的显微组织，并分析了拉伸性能对由旋转工具切入引起的变形程度（小孔和突起的深度）的依赖性。
Friction Stir Spot Welding, is an advanced solid state material joining technique, which is gaining wide popularity in automotive and aerospace industries, as it can be efficiently used to spot join dissimilar materials, with different mechanical and metallurgical characteristics. In this investigation, dissimilar friction stir spot welds of Aluminum 5083 and C10100 Copper joints (1.5 mm thick) were made using a non-consumable tool made up of H13 tool steel material, having a cylindrical straight flat geometry with shoulder diameter of 16 mm, pin diameter 6 mm and pin length 1.5 mm. The effect of piercing and puncturing of the tool on the top (Al) plate and the bottom Cu plate were analyzed by varying the predominant friction stir spot welding process parameters like tool rotational speed, dwell time and plunge depth. The extent of flash formation on the top Al plate, top side of the bottom Cu plate, were analyzed by studying the material flow due to the frictional heat generated in the weld zone. Microstructures at the interfaces were analyzed using SEM, and the dependence of tensile properties on the extent of the deformation (depth of keyhole and protuberance) caused by the rotating tool plunge were analyzed.