The heat-treated and artificially aged aluminium alloys of AA6061 and AA2017 are friction stir welded by employing five different tool pin profiles keeping the other process parameters constant. From this investigation, the mechanical properties of welded blanks were evaluated. The test results revealed that the straight square tool pin profile exhibited a higher ultimate tensile strength of 253 MPa with a tensile elongation of 6.7%. Higher Microhardness and joint efficiency were reported compared to other pin profiles. The microstructures at different zones of the welded joint were examined using optical and scanning electron microscopy. More Flowability indications with fine grain structure were examined for a straight square tool pin profile. The presence of intermetallic and the formation of fine-grain structures were accountable for the improvement in microhardness. The pulsating action of the square pin profile produced a defect-free joint.

AA6061 和 AA2017 热处理和人工时效铝合金通过采用五种不同的工具销轮廓进行摩擦搅拌焊接，保持其他工艺参数不变。通过这项调查，对焊接毛坯的机械性能进行了评估。测试结果表明，直方工具销轮廓表现出更高的极限拉伸强度 253 MPa，拉伸伸长率为 6.7%。与其他销轮廓相比，报告了更高的显微硬度和接头效率。使用光学和扫描电子显微镜检查焊接接头不同区域的微观结构。对于直方形工具销轮廓，检查了具有细晶粒结构的更多流动性指示。金属间化合物的存在和细晶粒结构的形成是显微硬度提高的原因。方销型材的脉动作用产生了无缺陷的接头。