Experimental investigation of underwater friction-stir welding of 5083 marine-grade aluminum alloy

Kishta, Emad Eldin; Darras, Basil M.

doi:10.1177/0954405414555560

Cited by 46 publications

(24 citation statements)

References 24 publications

(40 reference statements)

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“…The microhardness curve of "U" shapewas foundat the low rotational speed of 400 rpmin both normal and submerged friction stir welding due to the low heat generation.At last, lower hardness values were found at the rotational speed of 400 rpm in friction/submerged friction stir welding process. Zhang et al 16 were found the lower hardness in the nugget zone due to the strain hardening of the low-density dislocations as insufficient and improving to the strength loss of the welded plates at the lower rotational speed of 600 rpm.…”

Section: Hardnessmentioning

confidence: 99%

“…This tensile strength value for SFSW is 6% higher than the normal FSW. Emad EldinKishta et al 16 have studied the void fractions, thermal histories, tensile properties, microhardness and power of the submerged friction stir welded 5083 aluminium alloy. The results showed that the submerged friction stir welding produced good weld strength and considerable diminution in the void fraction.Zhang et al 17 exhibited submerged friction stir welded on 2219-T6 aluminum alloy at a fixed welding speed of 100 mm/min and different rotational speeds of 600, 800, 1000, 1200 and 1400 rpm respectively.…”

Section: Introductionmentioning

confidence: 99%

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Submerged Friction Stir Welding of 6061-T6 Aluminium Alloy under Different Water Heads

Rathinasuriyan

Santhanam

2018

Mat. Res.

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The aim of this paper is to determine the feasibility of submerged friction stir welding of 6061-T6 aluminium alloy on different water heads through macrostructuralanalysis.In this work, aluminium 6061-T6 alloy was friction stir welded under normal and submerged conditions at different rotational speeds of 400 rpm, 800 rpm, 1200 rpm, 1600 rpm. The water head was varied from 10 to 30 mm in the case of thesubmerged friction stir welding process. In both normal and submerged friction stir welding processes, a welding speed of 45 mm/min, a normal load of 30 kN, tool tilt angle of 2˚, depth of tool penetration and tool geometry were kept constant. Torque is measured during the welding process, and power (kW) is calculated after the welding process. The macrostructural analysis was carried out for locating defect formation and identifying the feasible working range of process parameters of the welded aluminium 6061-T6 alloy. The mechanical properties such as ultimate tensile strength and microhardness of submerged friction stir welded of 6061 aluminium alloys were investigated.Scanning Electron Microscope (SEM) metallography was used for comparing the microstructure of the parent material, friction stir welded and submerged stir welded samples.

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Section: Hardnessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Submerged Friction Stir Welding of 6061-T6 Aluminium Alloy under Different Water Heads

Rathinasuriyan

Santhanam

2018

Mat. Res.

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“…where m, p and d are the friction coefficient, contact pressure and contact state variable, respectively. Therefore, according to equation (1), the heat generation during the FSW process can be explained in terms of the tool geometry and its rotational speed. Consequently, although the amount of heat input is a key parameter in the quality, strength and microstructure of the created Al-Cu bimetals, direct measurement of this parameter is not easy during the FSW process and requires special and extra devices (such as thermocouples and infrared heat sensors).…”

Section: Resultsmentioning

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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“…SFSP not only reduced the peak temperature but also effectively controlled the thermal cycle. 22,23 The surface of the submerged sample appeared smooth because of the lower temperature and more cooling rate under the submerged condition. According to Figure 4, the processing surface displayed different morphologies; the crown formation at the processing zone depended on the traverse speed applied.…”

Section: Methodsmentioning

confidence: 99%

Investigations into the mechanical, morphological and thermal analyses of friction stir processing of high-density polyethylene composites

Gao

Shen

2016

Proceedings of the Institution of Mechanical Engineers, Part B:

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The aim of this work is to fabricate the high-density polyethylene-copper composites by submerged friction stir processing at different traverse speeds. The scanning electron microscopy is used to analyze the distribution of microstructure and particles. The experimental results indicated that the macrostructure morphology, microstructure and tensile strength vary depending on the traverse speed. Compared with the pure high-density polyethylene, Cu-filled polymer composites showed lower tensile strength and higher microhardness. The maximal values of the tensile strength and microhardness were achieved at traverse speeds of 30 and 15 mm/min, respectively. The thermal properties of Cu-filled high-density polyethylene composites were studied by differential scanning calorimetry. The crystalline content of the composites was decreased due to the addition of copper. From the experimental tests, it can be concluded that submerged fiction stir processing has a great potential for producing polymer-metal composites.

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Experimental investigation of underwater friction-stir welding of 5083 marine-grade aluminum alloy

Cited by 46 publications

References 24 publications

Submerged Friction Stir Welding of 6061-T6 Aluminium Alloy under Different Water Heads

Submerged Friction Stir Welding of 6061-T6 Aluminium Alloy under Different Water Heads

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

Investigations into the mechanical, morphological and thermal analyses of friction stir processing of high-density polyethylene composites

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