Optimization of mechanical and microstructural properties of friction stir spot welded AA 6061-T6 reinforced with SiC nanoparticles

Asadollahi, Morteza; Khalkhali, Abolfazl

doi:10.1088/2053-1591/aadc3a

Cited by 21 publications

(8 citation statements)

References 33 publications

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“…Four different regions were observed: (SZ), (TMAZ), (HAZ) and base metal zone. The microhardness values of TMAZ and HAZ decreased and become lower than the base metals due to their coarse grains size and dissolution of strengthening precipitates as a result of exposure of this zones to thermal cycles (Yuana et al 2011;Asadollahi & Khalkhali 2018). The hardness values begin recovering to original values, whenever moving away from the shoulder effect.…”

Section: Microhardness Testmentioning

confidence: 98%

“…The formation of intermetallic compounds other than Al2Cu was mostly inhibited by the short process times and high cooling rate. Asadollahi & Khalkhali (2018) investigate the enhanced welding features by incorporating SiC strengthening nanoparticles to AA 6061-T6 aluminum alloy welded by FSSW. They found that the nanoparticles gathering at grain borders and avoided the grain size from growth.…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of Hook and Intermixing Layer of Friction Stir Spot Welding Aa5052/C10100 Joints Reinforced by Zno Nano-Particles

Alshaibani

Aljanabi

2021

Kufa J. Eng.

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FSSW is a solid state joining method gained its significance as an alternate welding technique in the in electrical, electronic and automobile industries that used FSW welding. FSSW can be used to welding dissimilar joints of material with variation in metallurgical and mechanical characteristics. In this paper, dissimilar welding joints of aluminum alloys (5052) and pure copper (10100) with a thickness of 1.67 mm were welded by FSSW. The variation of rotational speed, dwell time and filler content have been used. The welding joints has been examined by tensile shear test. The scanning electron microscope SEM and X-ray diffraction are used to investigate the hook and intermixing layer characteristics. It was found the best welding condition is (1400 rpm) and (30 sec) which the joint is possess the tensile shear force (3340 N).Adding ZnO filler led to increase the thickness of the copper hook, and expanding the stir zone (weld width bond). Joints with V2-ZnO have highest thickness of intermixing layer (IM), length of weld width bond and best tensile shear force (4300 N).

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Section: Microhardness Testmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Characteristics of Hook and Intermixing Layer of Friction Stir Spot Welding Aa5052/C10100 Joints Reinforced by Zno Nano-Particles

Alshaibani

Aljanabi

2021

Kufa J. Eng.

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“…Among various reinforcements, SiC is considered a valuable contender because of its properties, such as lower thermal expansion coefficient, higher melting point, etc. Investigations have been carried on FSSW of aluminium alloys [19], magnesium alloys [20], copper [21], and other materials reinforced with silicon carbide during welding, and researchers have observed an increase in weld strength as well as the micro-hardness of welds, with homogeneous distribution of SiC particles in the welded area. Hence, it can be concluded that the incorporation of SiC particles in FSSW is a prominent method of enhancing the weld properties.…”

Section: Introductionmentioning

confidence: 99%

Parametric Optimisation of Friction-Stir-Spot-Welded Al 6061-T6 Incorporated with Silicon Carbide Using a Hybrid WASPAS–Taguchi Technique

et al. 2022

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Friction stir spot welding (FSSW) is one of the most popular fusion joining processes. The process is a solid-state welding process that allows welding of weldable as well as non-weldable materials. As a part of this investigation, weld samples of Al6061-T6 were reinforced with silicon carbide (SiC) powder with an average particle size of 45 µm. Initially, a Taguchi L9 orthogonal array was developed with three factors, i.e., rotational speed of the tool, pre-dwelling time, and diameter of the hole that was filled with SiC before welding. The effects of the SiC particles and process parameters were investigated as tensile–shear load and micro-hardness. The optimisation of parameters in order to maximise the output responses—i.e., strength and hardness of the welded joints—was performed using a hybrid WASPAS–Taguchi method. The optimised process parameters obtained were a 3.5 mm guiding hole diameter, 1700 rpm tool rotation speed, and 14 s of pre-dwelling time.

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“…The extraordinary properties of ceramic reinforcement such as high strength and melting point, low thermal expansion coe cient etc. certainly increase the weld strength [12][13]. Mishra et al [14] fabricated a MMC on surface of aluminium alloy using Friction Stir Processing (FSP).…”

Section: Introductionmentioning

confidence: 99%

Development of in situ MMC joint using friction stir spot welding of Al6061-T6

Chaudhary

Singh

2022

Int J Adv Manuf Technol

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In this study, friction stir spot welded joints of Al6061-T6 were obtained using Silicon Carbide particles as reinforcement. The effect of reinforced particles along with process parameters was analyzed in terms of tensile-shear strength, weld structure, hook formation. The investigations revealed that tensile-shear strength increased by 29.78 % with incorporation of silicon carbides particles in the weld region. The guiding hole diameter was found to be signi cant parameter for improved weld strength. Combination of moderate tool rotation speed, higher pre-dwelling time and guiding hole diameter were recognized as effective combination of process parameters. Weld cross sections were studied under stereo zoom microscope and optical microscope to observe different bonding regions. The scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) con rmed the presence of silicon carbides particles in weld region.

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Optimization of mechanical and microstructural properties of friction stir spot welded AA 6061-T6 reinforced with SiC nanoparticles

Cited by 21 publications

References 33 publications

Characteristics of Hook and Intermixing Layer of Friction Stir Spot Welding Aa5052/C10100 Joints Reinforced by Zno Nano-Particles

Characteristics of Hook and Intermixing Layer of Friction Stir Spot Welding Aa5052/C10100 Joints Reinforced by Zno Nano-Particles

Parametric Optimisation of Friction-Stir-Spot-Welded Al 6061-T6 Incorporated with Silicon Carbide Using a Hybrid WASPAS–Taguchi Technique

Development of in situ MMC joint using friction stir spot welding of Al6061-T6

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