Analysis of Variance of Dissimilar Cu-Al Alloy Friction Stir Welded Joints with Different Offset Conditions

In this investigation, dissimilar material AA6061-T6 and Cu B370 were joined by friction stir welding (FSW). This paper presents a feasibility study of FSW to join Al-alloy Cu-alloy. The experiment was conducted using general full factorial design varying the tool rotation speed, weld probe offset, keeping plunge depth constant. research work, statistical model established build connection between process variables outcomes—yield strength (YS), ultimate tensile (UTS) % elongation (% E). Statistical tools such as analysis variance scatter diagrams employed evaluate suitability models. addition, impacts on properties investigated. From experimental results, it can be concluded that (i) an excellent joint could obtained softer Al plate at retreating side with offset 2.0 mm towards material, (ii) maximum higher tool-rotation mm. Further, fractured specimens investigated scanning electron microscope (SEM). analyses, noted that, during test, failed brittle–ductile mixed fracture mode.