[Retracted] Parameters Optimization of Dissimilar Friction Stir Welding for AA7079 and AA8050 through RSM

Abstract

Aluminium alloy is widely used in engineering application, and it can be classified based on the constituent elements or alloying elements. Aluminium alloy is preferred for the nature of its tensile strength, ductility, and corrosion resistance in this research to make a dissimilar friction stir welding joint of aluminium alloys 7079 and 8050 materials. The tensile strength of the weld joint is estimated by the influence of the response surface methodology approach. The welding is carried out by preferred process parameters with a tool speed of 1000–2500 rpm, tool pin diameter of 2–6 mm, welding speed of 50–300 mm/min, and tool shoulder diameter of 10–20 mm. The ANOVA analysis and the prediction of tensile strength were conducted efficiently. From the RSM analysis, the tool pin diameter mostly modified the output of the result.

The Influence of the Mechanism of Double-Sided FSW on Microstructure and Mechanical Performance of AZ31 Alloy

“…The microstructure refinement was carried out through the recrystallization mechanism. According to the Hall-Petch equation, [34][35][36][37][38][39][40][41][42][43][44][45][46][47], the increment (∆σ) of the yield strength caused by grain refinement can be computed by Equation (3):…”

“…The welding joint experienced the FSW of the D process, which obtained the optimal strength (315 MPa). According to the Hall-Petch equation, [34][35][36][37][38][39][40][41][42][43][44][45][46][47], the increment (Δσ) of the yield strength caused by grain refinement can be computed by Equation ( 3):…”

“…Additionally, it has been reported that single-pass FSW requires a careful selection of welding parameters as improper welding parameters give rise to the formation of defects (such as cavity, tunnel, and kissing bond defects) [35,36]. Kavitha et al studied the effect of FSW parameters on the joint strength of AA7079 and AA8050 through a statistical technique of RSM, and found the preferred process parameters [37]. Compared to the single-pass FSW, the application of a second overlapping pass prolonged the DRX time and the DRX became sufficient, resulting in further grain refinement [38,39].…”

A mobile fixture system for friction stir welding application

“…The optimum parameters required for obtaining adequate weldment were established as 2-5 kN [13] 6 kN [14] 3.8 to 9.8 kN [15] 26.58 kN [16] 5.884 kN [17] 122 kN [18] 20 -60 kN [19], 1-3 o [20] 11.5 -24 mm/min [16] 37.5-47.5 mm/min [3] 40 to 140 mm/min [21] 50-300 mm/min [22] 14 -750 mm/min [23] 50mm/min -100 mm/min and [14] 2000 rpm [14] 2700 -5400 rpm [16] 1500 to 2500 rpm [15] 45 -2000 rpm [23] 900-1400 rpm [3] 600 to 1600 rpm [21] 1000-2500 rpm [22] for the axial force, tool tilt angle, feed rate, and the tool rotational speed respectively. This range of values were considered for the detail design of the MFS.…”

The Role of Al-10%Si Coating in the Manufacture and Use of Aluminized Open-Joint Steel Tubes

“…There is general information in the literature specifying ranges of parameters in the production of welded steel tubes [54][55][56][57][58][59] and Friction Stir Welding [60,61]. By contrast, knowledge on the preparation of aluminized steel tube is incomplete, and in particular in the area related to the presence of the coating.…”