In the present study, butt weld produced by friction stir welding of aluminium 1060 alloy has been analyzed. Destructive test, non-destructive test, and SEM image analysis methods have been implemented to investigate the microstructural evolution and mechanical properties of welded joints. The effects of tool rotation speed, welding speed, tool pin profile and tool offset have been investigated to optimize welding conditions for required weld properties. Face-centered central composite design of response surface methodology has been adapted to analyze the effect of parameters with an optimal number of experiments. It has been observed that weld produced with threaded pin tool has higher ultimate tensile stress and ultimate flexural stress. Radiography test has shown that cracks are not present in the produced weldment. From the study of the fracture surface of the tensile test specimen, it has been found that ductility of weld is highest at the top area and decreases towards the bottom area of weld. Dimple formation has been found at the top area of the fracture surface but has been absent in the bottom area of weld. Vickers hardness of weld zone and the heat affected zone has found to be less than the base material.

中文翻译：

---

搅拌摩擦对接焊过程中焊缝质量的分析与表征

在本研究中，已经分析了由铝1060合金的搅拌摩擦焊产生的对接焊缝。破坏性测试，非破坏性测试和SEM图像分析方法已被采用，以研究焊接接头的组织演变和力学性能。已经研究了工具转速，焊接速度，工具销轮廓和工具偏移量的影响，以针对所需的焊接性能优化焊接条件。响应面方法的以面部为中心的中央复合设计已被调整为以最佳数量的实验来分析参数的影响。已经观察到，用螺纹销工具生产的焊缝具有更高的极限拉伸应力和极限弯曲应力。射线照相测试表明，所生产的焊件中不存在裂纹。通过对拉伸试样的断裂表面的研究，发现焊缝的延展性在顶部区域最高，而在焊缝底部区域则降低。在断裂面的顶部发现了凹痕，但在焊缝的底部却没有。发现焊接区和热影响区的维氏硬度小于母材。