Dissimilar alloys (AA6082/AA5083) joining by FSW and parametric optimization using Taguchi, grey relational and weight method

Abstract

This work is focused on the influence of different friction stir welding (FSW) parameters on AA6082 T-6 and AA5083-O alloys welding quality, by using Taguchi, Grey Relational and Weight Method. Four welding parameters were investigated, namely tool rotation speed (TRS), welding speed (WS), tool pin profile (TPP) and shoulder diameter (SD). The optimized setting of these input parameters was investigated so that weld parts quality could be optimized. Analysis of variance (ANOVA) was used to investigate the effects of these welding process parameters on response variables, viz. elongation (EL) and ultimate tensile strength (UTS). Single response optimization was carried using Taguchi Technique while grey relational analysis (GRA) was used for simultaneous optimization of two responses. Once the optimal settings of control factors were identified, confirmation experiments were performed for the validation of results. In the multi-response optimization, TRS was found to have the maximum effect (57.9%), followed by WS, SD and TPP. Weight method was applied for providing the priority to the response (i.e. EL and UTS). The response with higher priority presented a weight equal to 0.7, while the lower priority given corresponds to a weight of 0.3.

Mechanical and fracture properties of aluminium cylinders manufactured by orbital friction stir welding

“…Dealing with the FSW process, most of the previous research works are focused on linear welding of plates (such as lap, butt and T‐joint welds) for different alloys 3–15 . However, reliable and practical usage of this technique for joining cylinders, pipes and tubes requires a suitable and optimized orbital FSW on cylindrical shells.…”

Investigation and optimization of friction stir welding process parameters of stir cast AA6082/ZrO2/B4C composites

“…They found that the TRS and WS significantly influenced the responses. Jain et al [13] examined the influence of four FSW important parameters (TRS, WS, TPP, and SD) on different FSW of AA6082 T6 and AA5083-O alloys utilizing the Taguchi's grey relational weight method. They concluded from the results that the optimum UTS was achieved for the TRS of 1200 rpm, WS of 35 mm/min, and SD of 16 mm.…”

Analysis of tensile-shear strength of single and multi-friction stir spot welding joints under fixed welding process conditions

“…As a result of these advantages, FSSW is used to weld lightweight materials, especially aluminum alloys. 5–8 Two review studies published by Pan 9 and Yang et al. 10 provided comprehensive data on microstructures, mechanical properties, and the fatigue behavior of FSSW in different materials.…”