Multi-objective optimization of friction stir welding parameters using desirability approach to join Al/SiCp metal matrix composites

Periyasamy, P.; Mohan, B.; Balasubramanian, V.; Rajakumar, S.; Venugopal, S.

doi:10.1016/s1003-6326(13)62551-0

Cited by 77 publications

(37 citation statements)

References 17 publications

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“…This is attributed to more grain refinement in the NZ due to dynamic recrystallization and more uniform distribution of finer reinforcement particles in the weld zone due to FSW action. These conclusions agreed with the Hall-Petch equation (inversely proportional relation between hardness and grain size) and the Orowan hardening mechanism (hardness can be improved if finer particles distribute homogenously) [47]. Also it may be concluded from Figure 14 that lower heat input leads to the formation of coarse grains because of incomplete recrystallization and thus a reduction of the NZ microhardness.…”

Section: Microhardness Of Amc Jointssupporting

confidence: 73%

“…Firstly, it is well accepted that the highest hardness value occurs in the centre of the NZ followed by a gradual decrease across the TMAZ and HAZ until reaching the hardness value of the BM as shown in Figure 14 [30,32,34,37,42,[45][46][47][48]. This is attributed to more grain refinement in the NZ due to dynamic recrystallization and more uniform distribution of finer reinforcement particles in the weld zone due to FSW action.…”

Section: Microhardness Of Amc Jointsmentioning

confidence: 90%

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A review of friction stir welding of aluminium matrix composites

et al. 2015

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As a solid state joining process, friction stir welding (FSW) has proven to be a promising approach for joining aluminium matrix composites (AMCs). However, challenges still remain in using FSW to join AMCs even with considerable progress having been made in recent years. This review paper provides an overview of the state-of-the-art of FSW of AMC materials. Specific attention and critical assessment have been given to: (a) the macrostructure and microstructure of AMC joints, (b) the evaluation of mechanical properties of joints, and (c) the wear of FSW tools due to the presence of reinforcement materials in aluminium matrices. This review concludes with recommendations for future research directions.

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Section: Microhardness Of Amc Jointssupporting

confidence: 73%

Section: Microhardness Of Amc Jointsmentioning

confidence: 90%

A review of friction stir welding of aluminium matrix composites

et al. 2015

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“…(2) to the results of hardness and strength measurement of AA6061/20% SiC MMC in Ref. 19), it is found that the measured hardness of 109 VHN can be calculated to be the TS of 299 MPa which is still reasonably close to the measured strength of 287 MPa.…”

Section: Materials Strength Relationshipmentioning

confidence: 74%

Post-Weld Heat Treatment Effects on Hardness and Impact Strength of Aluminum Alloy 6061 Friction Stir Butt Weld

et al. 2015

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Butt joint friction stir welding (FSW) of aluminum alloy 6061-T651 rolled plate was prepared and the weld specimens were post weld heat treated (PWHT) by solution heat treatment and aging. The hardness, toughness and fracture surface of the PWHT and as-welded specimens were investigated and their relationships were discussed. The effects of FSW are found to soften the nugget zone and thermomechanical affected zone in the as-welded condition, however, the PWHT can provide a full strength recovery in the whole weld specimen. Results from the analysis of relationship of the hardness-tensile strength found that the tensile strength (TS) is linearly proportional to the Vickers hardness number (VHN) with a TS to VHN ratio of about 2.75. However, the linear proportion with a negative slope of the hardness-toughness relationship is observed with the characteristic toughness constant of about 40 J for AA 6061. From fracture surface investigation, the unique fracture characteristics comprising double V grooves and double sharp hills with strips equivalent to the cup and cone fracture of the tensile fracture of medium ductile alloys are observed.

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“…The working range of each process parameter was first estimated with reference to previous studies [9,10,12,20,22,23]. The lower limits of N and T were thus determined, and several trial weld runs were performed to further determine the upper limit of N by varying its value while keeping the remaining values constant.…”

Section: Experimental Designmentioning

confidence: 99%

Multi-Objective Optimization of Friction Stir Spot-Welded Parameters on Aluminum Alloy Sheets Based on Automotive Joint Loads

Zhang

Chen

Pan

et al. 2019

Metals

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By controlling various friction stir spot-welded (FSSW) factors, two base sheets AA 5052-H32 and 6061-T6 were selected to bond similar and dissimilar metal joints while considering dissimilar configuration orders. The effects of weld parameters on the sheer strength and peel strength were separately developed into empirical models utilizing the integrated central composite matrix design and response surface methodology (RSM). Meanwhile, the finite element (FE) analysis of the multi-axis load-bearing characteristics for automotive solder joints during service was carried out. As a result, the weights of the shear and axial stress, accounting for 90.5% and 9.5% respectively, were employed to restrict the relationship between multiple target properties, and the resulting security strength was applied to determine the feasible domain in subsequent parametric optimization. In order to enable the optimal multi-axis capacities in accordance with the load mode, the genetic algorithm NSGA-II was chosen to compute the Pareto front and further determine the best compromise solutions. The obtained optimums corresponding to each joining condition were validated by confirmation runs, indicating that this coupled multi-objective optimization approach based on working conditions was beneficial to the targeted improvement of post-weld mechanical properties.

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Multi-objective optimization of friction stir welding parameters using desirability approach to join Al/SiCp metal matrix composites

Cited by 77 publications

References 17 publications

A review of friction stir welding of aluminium matrix composites

A review of friction stir welding of aluminium matrix composites

Post-Weld Heat Treatment Effects on Hardness and Impact Strength of Aluminum Alloy 6061 Friction Stir Butt Weld

Multi-Objective Optimization of Friction Stir Spot-Welded Parameters on Aluminum Alloy Sheets Based on Automotive Joint Loads

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