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Journal ArticleDOI

Friction Stir Welding of AA6082 Thin Aluminium Alloy Reinforced with Al2O3 Nanoparticles

04 Sep 2019-Transactions of The Indian Ceramic Society (Taylor & Francis)-Vol. 78, Iss: 3, pp 137-145
TL;DR: In this paper, AA6082-T6 thin aluminium alloy plates of 2 mm thickness were friction stir welded using fine ceramic Al2O3 nanoparticles as the reinforcing materials between the adjo...
Abstract: In this present investigation, AA6082-T6 thin aluminium alloy plates of 2 mm thickness were friction stir welded using fine ceramic Al2O3 nanoparticles as the reinforcing materials between the adjo...
Citations
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Journal ArticleDOI
TL;DR: In this article, the current status of nanoparticle reinforcement FSW process is analyzed and various properties associated with reinforced joints are presented with the mechanism of the relationship between microstructure and properties.
Abstract: Nanomaterial reinforced friction stir welding (FSW) is an emerging domain, as it delivers a promising method for enhancing joint properties by making composite joints. Composite joints can enhance surface properties like hardness, strength, corrosion resistance, wear resistance, fatigue life, electrical conductance. Over few years many publications have been reported on the application of nanoparticles reinforcement in FSW joints. The present review critically analyses the current status of nanoparticle reinforcement FSW process. Firstly need, type, behaviour, intrinsic properties of nanoparticles used in FSW are discussed. Then, the microstructural examinations of reinforced joints are analysed. Followed by, various properties associated with reinforced joints are presented with the mechanism of the relationship between microstructure and properties. Finally, various methods of deposition of nanoparticle in FSW is discussed. At last prospects of reinforced FSW are explored followed by concluding remarks.

32 citations

Journal ArticleDOI
TL;DR: In this article, the mechanical and microstructural properties of friction stir welded similar DP600 steel were investigated and the sheets were butt welded with a single pass and three different rota...
Abstract: In the present work, mechanical and microstructural properties of friction stir welded similar DP600 steel were investigated. The sheets were butt welded with a single pass and three different rota...

10 citations


Cites methods from "Friction Stir Welding of AA6082 Thi..."

  • ...The planimetric method was used to calculate the average grain size number [42],...

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Journal ArticleDOI
TL;DR: In this article, the effect of adding novel biochar microparticle into the welding zone of dissimilar friction stir welding of AISI-SAE 1010 (steel) and CDA 101 (copper) alloys was investigated.
Abstract: This present work investigates the effect of adding novel biochar microparticle into the welding zone of dissimilar friction stir welding of AISI-SAE 1010 (steel)–CDA 101 (copper) alloys. The primary aim of this work was to produce efficient weld joints in AISI-SAE 1010–CDA 101 alloys using biochar as solid lubricant via friction stir welding process. The biochar particles were prepared from rice husk biomass via carbonization process. The welding was performed using tapered pin profiled tool with rotational speed of 900 rpm, traverse speed of 30 mm/min, axial load of 5 KN, dwell time of 5s, plunging depth of 0.2mm, and biochar additions of 0.5, 1, 2, and 4wt%. The highest tensile strength of 205 MPa, elongation of 44%, yield strength of 177MPa, strain value of 36, and Vickers hardness of 121 were observed for FSW joints made using 2wt% of biochar content. Large addition of biochar up to 4wt% marginally affects the properties. Similarly, the fatigue strength of 157MPa was observed for weld made using 2wt% of biochar. The microstructure of biochar-assisted weld nugget shows highly refined less thermally affected grains. The grains were in equiaxial with distortion-free. The EDAX report confirms the presence of copper, iron, and carbon on the weld nugget, which indicates fine mixing of parent metals with solid lubricant. These mechanical properties improved environmental friendly dissimilar welding method could be used in industrial applications such as automobile, aerospace, construction, defense, medical, energy where high strength with high durable weld joints are required to meet the current technology demand, and process economy.

9 citations

Journal ArticleDOI
TL;DR: Filling Friction Stir Welding (FFSW) is an FSW completing process, in which the exit-holes at the end of friction stir welded lines are filled by a rotational semi-consumable pin this paper.
Abstract: Filling Friction Stir Welding (FFSW) is an FSW completing process, in which the exit-holes at the end of friction stir welded lines are filled by a rotational semi-consumable pin. In the present st...

9 citations

Journal ArticleDOI
13 Jan 2021
TL;DR: In this article, aluminum hybrid composites using bamboo leaf ash (BLA) and alumina have been fabricated via stir casting and the effect of the EDM machining process parameters on the output responses such as surface roughness (Ra) and material removal rate (MRR) are evaluated using grey relational analysis.
Abstract: In this research work, aluminum hybrid composites using bamboo leaf ash (BLA) and alumina have been fabricated via stir casting. Three hybrid composites viz: A713 + 2%BLA + 2%Al2O3, A713 + 2%BLA + 4%Al2O3, A713 + 4%BLA + 2%Al2O3 are fabricated successfully and EDM machining of these three composites is performed. The EDM machining experiments of the three hybrid composites, have been designed using Taguchi L27 orthogonal array design of experiments (DOE) considering current (A), duty cycle (%), gap voltage (V) and different percentage composition of the reinforcements. The effect of the EDM machining process parameters on the output responses such as surface roughness (Ra) and material removal rate (MRR) are evaluated using grey relational analysis.

6 citations

References
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Journal ArticleDOI
TL;DR: In this article, a new approach for dissimilar friction stir welding of aluminum alloy and magnesium alloy was developed, in which silicon carbide nanoparticles were embedded into the weldment.
Abstract: In this study, a new approach for dissimilar friction stir welding of aluminum alloy and magnesium alloy was developed. In order to make metal matrix composite in the weld stir zone, silicon carbide nanoparticles were embedded into the weldment. The admixture pattern of the stir zone, weld microstructures, intermetallic phases, powder distribution, and mechanical properties of the welds were investigated in this paper. Due to using silicon carbide nanoparticles as reinforcement in friction stir welding, the weld microstructure was affected by pinning mechanism. Meanwhile, it was observed that the formation of brittle and hard intermetallic phases also affected the welded joint microstructure. The effects of friction stir welding process parameter such as tool rotational and traverse speeds were also examined. It was observed that increasing the tool rotational speed and decreasing the tool traverse speed improved the mixing of two alloys at the stir zone. By controlling the process parameters, a fine microstructure with an average grain size of 4.3 μm at the stir zone was obtained.

75 citations

Book ChapterDOI
01 Jan 2005
TL;DR: In this article, the principles of controlled deformation and fracture are described and a calibrated analytical model of deformation diagrams for various materials and processing conditions, which expedites the development of laser forming procedures.
Abstract: Publisher Summary This chapter describes the principles of controlled deformation and fracture. Both laser-induced deformation and fracture can be achieved through a number of different mechanisms that form the basis of a number of novel applications—non-contact sheet forming in two and three-dimensions; cleaning through differential expansion of coatings and substrates; material removal through differential expansion of laser-heated surface layers; and internal three-dimensional “sculpturing” of acrylics and glasses. Materials with a high value of the index defined by the product of thermal expansion coefficient and Young's modulus, such as metals and alloys, respond well to laser-induced deformation. Materials with low values of thermal and mechanical strain, such as concrete, respond well to controlled fracture. A calibrated analytical model of deformation can be used to construct laser deformation diagrams for various materials and processing conditions, which expedites the development of laser forming procedures. The advantages of laser-based methods of deformation and fracture lie in the low controllable energy input. When used in conjunction with sensitive process monitoring and control equipment, such processes are ideally suited to automation with potential for application in many industrial sectors.

69 citations

Journal ArticleDOI
TL;DR: In this article, different friction stir welds were produced in 3mm thick plates of AA6082-T6 and AA5083-H111 aluminum alloys using SiC as reinforcing material.
Abstract: Dissimilar friction stir welds were produced in 3 mm thick plates of AA6082-T6 and AA5083-H111 aluminum alloys using SiC as reinforcing material. The optimum weld presents a good distribution of nanoparticles in the weld nugget and mechanical mixing of the two alloys as well as further grain refinement compared to the one without nanoparticles. Higher hardness in the weld nugget is also evidenced, followed by enhanced ultimate tensile strength and elongation values. All specimens, after the tensile test, were lead to fracture at the heat affected zone of AA6082-T6 and specifically at the region of the lowest hardness.

67 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the properties of dissimilar friction stir welding (FSW) joints of copper and aluminum by nine different tool designs, while the rest of the process parameters were kept constant.

65 citations

Journal ArticleDOI
TL;DR: In this paper, the defect-free welds are characterized by good mechanical mixing between the joined materials as well as by good nanoparticle distribution and further grain refinement in comparison with the unreinforced weld.
Abstract: Dissimilar friction stir welding between aluminum alloys thick plates reinforced with TiC nanoparticles was conducted. The defect-free welds are characterized by good mechanical mixing between the joined materials as well as by good nanoparticle distribution and further grain refinement in comparison with the unreinforced weld. The local mechanical behavior of the produced metal matrix composites was studied and compared with their bulk counterparts and parent materials. Specifically, the measured mechanical properties in microscale and nanoscale (namely hardness and elastic modulus) are correlated with microstructure and the presence of fillers. The hardness, elastic modulus, ultimate tensile strength, percentage of elongation, and yield values increase with the presence of TiC nanoparticles.

59 citations


"Friction Stir Welding of AA6082 Thi..." refers methods in this paper

  • ...Dragatogiannis et al.15 satisfactorily friction stir welded AA6082-AA6083 using TiC nanoparticles....

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