Friction stir welding parameters optimization of heterogeneous tailored welded blank sheets of aluminium alloys 6061 and 5083 using response surface methodology

Ghaffarpour, Morteza; Dariani, Bijan Mollaei; Kokabi, A.H.; Razani, N. A.

doi:10.1177/0954405412461864

Cited by 27 publications

(17 citation statements)

References 19 publications

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“…23 Also, the nondissolved precipitates will get coarser due to an extra heat input. 24 The predicted and measured tensile strengths of the dissimilar joints produced by the FSW and the TIG techniques are summarized in Table 8. According to this table, there is a good agreement between the predicted and measured tensile strengths, indicating the capability of RSM in modeling and predicting results of the processes.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of dissimilar joints properties of 5083-H12 and 6061-T6 aluminum alloys produced by tungsten inert gas and friction stir welding

Ghaffarpour

Kazemi

Sefat

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part L:

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In the present study, friction stir welding (FSW) and tungsten inert gas (TIG) techniques were used to join the dissimilar aluminum alloys of 5083-H12 and 6061-T6. The laboratory tests were designed using design of experiment (DOE) method. Variables for the FSW process were the rotational speed, traverse speed, shoulder diameter, and pin diameter. They changed in ranges of 700-2500 r/min, 25-400 mm/min, 10-14 mm, and 2-4 mm, respectively. In the case of TIG process, the variables were current intensity, traverse speed, and tilt angle. These parameters varied from 80 to 90 A, 200 to 400 mm/min, and 3 to 12 , respectively. The optimum amounts of parameters were obtained using response surface methodology (RSM). The RSM-based model was developed to predict ultimate tensile strength (UTS) of the welds produced. In FSW, the difference between predicted and measured UTS was about 1.28% and in TIG it was 1.78%. The good agreement between experimental and predicted results indicates the high accuracy of the developed model. Mechanical properties and also the microstructure of the welds were compared after optimizing both welding processes using RSM. The results showed that the welds produced by FSW indicated a considerably higher quality and also improved mechanical properties compared to TIG. Properties of the joints obtained by FSW in single-sided joints were more desirable. In the double-sided welds obtained by FSW these differences were of an even higher significance.

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Section: Resultsmentioning

confidence: 99%

Evaluation of dissimilar joints properties of 5083-H12 and 6061-T6 aluminum alloys produced by tungsten inert gas and friction stir welding

Ghaffarpour

Kazemi

Sefat

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…Data variance analysis showed that the rotational speed and diameter of a tool are the major and the minor significant factors, respectively. Similarly, this is seen in studying the effect of welding factors on the microstructure and mechanical strength of heterogeneous tailored welded blank sheets (5083-H12 and 6061-T6 Al alloys) [18]. Optimization of FSW parameters was established in different conditions of base material and the microstructures of the welded condition compared with the postweld heat-treated microstructures welded in annealed and T6 condition [19].…”

Section: Literature Reviewmentioning

confidence: 99%

Mathematical Modelling of a Friction Stir Welding Process to Predict the Joint Strength of Two Dissimilar Aluminium Alloys Using Experimental Data and Genetic Programming

Yunus

Alsoufi

2018

Modelling and Simulation in Engineering

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Friction stir welding (FSW) is the most popular and efficient method of solid-state joining for similar as well as dissimilar metals and alloys. It is mostly used in applications for aerospace, rail, automotive, and marine industries. Many researchers are currently working with different perspectives on this FSW process for various combinations of materials. The general input process parameters are the thickness of the plate, axial load, rotational speed, welding speed, and tilt angle. The output parameters are joint hardness, % of elongation, and impact and yield strengths. Genetic programming (GP) is a relatively new method of evolutionary computing with the principal advantage of this approach being to evaluate efficacious predictive mathematical models or equations without any prior assumption regarding the possible form of the functional relationship. This paper both defines and illustrates how GP can be applied to the FSW process to derive precise relationships between the output and input parameters in order to obtain a generalized prediction model. A GP model will assist engineers in quantifying the performance of FSW, and the results from this study can then be utilized to estimate future requirements based on the historical data to provide a robust solution. The obtained results from the GP models showed good agreement with experimental and target data at an average prediction error of 0.72%.

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“…Based on their results, underwater welding of AA5083 alloy produced good tensile properties, and also significant reduction in void fraction was observed in the weld zone. FSW tailor welding process of Al6061-Al5083 blank sheets was optimized by Ghaffarpour et al 2 using response surface methodology. Nguyen et al 3 predicted failure loads of friction stir spot welding joint of Al6061-T6 sheets using finite element analyses.…”

Section: Introductionmentioning

confidence: 99%

Experimental notched fracture resistance study for the interface of Al–Cu bimetal joints welded by friction stir welding

Aliha

Fotouhi

Berto

2017

Proceedings of the Institution of Mechanical Engineers, Part B:

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Strength and load-bearing capacity of dissimilar joints welded by friction stir welding is one of the most interesting subjects for optimizing this recently developed joining technique. Hence, in this article, dissimilar butt weldments of pure copper with Al5083 are manufactured with different welding parameters (including pin rotational and tool offset). Then rectangular beam specimens containing right angle notches in the interface of joints were prepared from the welded plates and tested under threepoint bend loading to investigate the interface fracture strength of Al-Cu joints. The results showed the significant influence of welding parameters on the strength and load-displacement curves of the tested bimetals. It was shown that considering a suitable value for the offset of pin can increase the interface fracture strength. The highest fracture loads were achieved at moderately lower pin rotational speeds.

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Friction stir welding parameters optimization of heterogeneous tailored welded blank sheets of aluminium alloys 6061 and 5083 using response surface methodology

Cited by 27 publications

References 19 publications

Evaluation of dissimilar joints properties of 5083-H12 and 6061-T6 aluminum alloys produced by tungsten inert gas and friction stir welding

Evaluation of dissimilar joints properties of 5083-H12 and 6061-T6 aluminum alloys produced by tungsten inert gas and friction stir welding

Mathematical Modelling of a Friction Stir Welding Process to Predict the Joint Strength of Two Dissimilar Aluminium Alloys Using Experimental Data and Genetic Programming

Experimental notched fracture resistance study for the interface of Al–Cu bimetal joints welded by friction stir welding

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