Interfacial sticking and slipping in the friction stir welding process
Interfacial sticking and slipping in the friction stir welding process
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DOI：
10.1016/j.msea.2006.07.082
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发表时间：
2006-11-05
期刊：
影响因子：
6.4
通讯作者：
Nunes, Arthur C., Jr.
中科院分区：
文献类型：
--
作者：
Schneider, Judy;Beshears, Ronald;Nunes, Arthur C., Jr.
在搅拌摩擦焊（FSW）中，旋转的螺纹焊接工具插入焊缝中，并且将焊缝的边缘搅拌在一起。为了确定用于产生无缺陷焊缝的最佳工艺参数，需要对所产生的金属变形流动路径有物理上的理解。标记研究是研究FSW焊接工具周围金属变形流动路径的主要方法。在我们的研究中，我们使用了一个铅线嵌入焊缝作为示踪剂。在铝的焊接温度下，铅变成熔融的，并且被焊接金属的宏观流动连续地携带。在铅示踪剂的X射线成像中，除了揭示受该过程影响的塑化金属中的循环振荡外，还揭示了金属的全厚度流动。(c)2006 Elsevier B.V.保留所有权利。
In friction stir welding (FSW), a rotating threaded weld tool is inserted into a weld seam and literally stirs the edges of the seam together. To determine optimal processing parameters for producing a defect free weld, a physical understanding of the resulting metal deformation flow path is required. Marker studies are the principal method of studying the metal deformation flow path around the FSW weld tool. In our study, we have used a lead wire embedded in the weld seam as a tracer. At the welding temperature of aluminum, the lead becomes molten and is continuously carried with the macro-flow of the weld metal. A through thickness flow of metal was revealed in the X-ray imaging of the lead tracer in addition to revealing a cyclic oscillation in the plasticized metal affected by the process. (c) 2006 Elsevier B.V. All rights reserved.