Experimental and Numerical Studies of Material Flow during Welding by Friction Stirring
Experimental and Numerical Studies of Material Flow during Welding by Friction Stirring
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搅拌摩擦焊接过程中材料流动的实验与数值研究
DOI：
10.2207/qjjws.29.114s
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Fukumoto
中科院分区：
文献类型：
--
作者：
Y. Shimoda;M. Tsubaki;T. Yasui;M. Fukumoto
搅拌摩擦焊（FSW）是一种节能环保的焊接工艺。搅拌摩擦焊采用挤压和锻造相结合的固态连接工艺。焊接接头的性能很大程度上取决于焊接过程中的热输入和材料流动。利用材料绕流技术研究了对接焊缝的焊接缺陷区域.利用高速摄像机对铝合金焊接过程中材料在透明聚氯乙烯（PVC）材料间的流动方向进行了模拟实验研究。此外，采用粒子图像测速（PIV）方法测量了物料的流动速度。利用塑性成形软件DEFORM-3D对材料流动进行了有限元数值模拟。从PIV和FEM分析中，观察到材料在前进侧（AS）和后退侧（RS）的不同流动方向。一是材料流动方向与RS处的刀具旋转方向相对应。另一种是在AS处流动方向与工具旋转方向相反。另一方面，PIV分析的材料流速在AS处的范围为约2至20 mm/s。PIV分析的材料流速范围为1至5 mm/s。
and Friction stir welding (FSW) is an energy efficient and environmentally benign welding process. The FSW is welded as a solid-state joining process under a combination of extruding and forging. The weld joint property strongly depends on the heat input and material flow during welding. The region of weld defects of butt weld was investigated by material flow around tool. The material flow direction during welding was investigated using a high speed video camera between transparent Poly-vinyl chloride (PVC) materials as simulation experiments of aluminum alloys. Additionally, the material flow velocity was measured by particle image velocimetry (PIV) method. Also, the material flow was numerically simulated which is finite element method (FEM) by plastic forming software DEFORM-3D. From PIV and FEM analysis, material flow directions were observed different type of flow direction at advancing side (AS) and retreating side (RS). One is that the material flow direction was corresponded to the tool rotation at RS. Other is that the flow direction was in the reverse direction of the tool rotation at AS. On the other hand, the material flow velocities of PIV analysis ranges from about 2 to 20 mm/s at AS. The material flow velocities of PIV analysis ranges from 1 to 5 mm/s at RS.