De Filippis Luigi Alberto Ciro, Serio Livia Maria, Palumbo Davide, De Finis Rosa, Galietti Umberto
Department of Mechanics Mathematics and Management (DMMM), Politecnico di Bari, 70126 Bari, Italy.
Materials (Basel). 2017 Oct 11;10(10):1165. doi: 10.3390/ma10101165.
Friction Stir Welding (FSW) is a solid-state welding process, based on frictional and stirring phenomena, that offers many advantages with respect to the traditional welding methods. However, several parameters can affect the quality of the produced joints. In this work, an experimental approach has been used for studying and optimizing the FSW process, applied on 5754-H111 aluminum plates. In particular, the thermal behavior of the material during the process has been investigated and two thermal indexes, the maximum temperature and the heating rate of the material, correlated to the frictional power input, were investigated for different process parameters (the travel and rotation tool speeds) configurations. Moreover, other techniques (micrographs, macrographs and destructive tensile tests) were carried out for supporting in a quantitative way the analysis of the quality of welded joints. The potential of thermographic technique has been demonstrated both for monitoring the FSW process and for predicting the quality of joints in terms of tensile strength.
搅拌摩擦焊（FSW）是一种基于摩擦和搅拌现象的固态焊接工艺，与传统焊接方法相比具有许多优势。然而，有几个参数会影响所生产接头的质量。在这项工作中，采用了一种实验方法来研究和优化应用于5754-H111铝板的搅拌摩擦焊工艺。特别是，研究了该过程中材料的热行为，并针对不同的工艺参数（行进速度和旋转工具速度）配置，研究了与摩擦功率输入相关的两个热指标，即材料的最高温度和加热速率。此外，还采用了其他技术（微观照片、宏观照片和破坏性拉伸试验）以定量方式支持对接头质量的分析。热成像技术在监测搅拌摩擦焊过程以及预测接头拉伸强度方面的潜力已得到证明。
