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...
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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
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..."
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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
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
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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TL;DR: In this article, microstructural evolutions and texture development during dissimilar friction stir welding (DFSW) of an Al-matrix hybrid nanocomposite with AA1050 was presented.
Abstract: Owing to the advantages of nanocomposites for structural applications, we present microstructural evolutions and texture development during dissimilar friction stir welding (DFSW) of an Al-matrix hybrid nanocomposite (Al-2 vol.-% Al2O3-2 vol.-% SiC) with AA1050. It is shown that DFSW can successfully be performed at a rotating speed of 1200 rev min−1 and a transverse speed of 50 mm min−1 while locating the nanocomposite at retreating side. Formation of macro-, micro-, and nano-mechanical interlocks between dissimilar base materials (BMs) as a result of FSW tool stirring action possessed an impact influence on the mechanical performance of dissimilar welds. Electron microscopy revealed formation of a three-modal grain structure from microscale (>1 µm) to nanoscale (<100 nm) range in the stir zone of the joint materials. Texture components included a mixture of shear elements and ideal random orientations, as compared to the completely random and Cu-P preferred textures for the aluminum and composit...
35 citations
TL;DR: Al2618 alloy composites containing 6 wt% nano B4C were prepared by liquid metallurgy two stage stir casting process Characterization was performed using scanning electron microscope to validate the homogenous distribution of nano B 4C particles in the Al2618 Alloy matrix The presence of B and C elements was confirmed by EDS analysis in the nano reinforced metal composites as discussed by the authors.
Abstract: Al2618 alloy composites containing 6 wt% nano B4C were prepared by liquid metallurgy two stage stir casting process Characterization was performed using scanning electron microscope to validate the homogenous distribution of nano B4C particles in the Al2618 alloy matrix The presence of B and C elements was confirmed by EDS analysis in the nano B4C reinforced metal composites The mechanical behavior of the prepared nano composites were evaluated as per the ASTM standards, and it was noted that the tensile strength (ultimate strength and yield strength) and compression strength increased with the addition of 6 wt% nano B4C particles Finally, to understand the failure mechanisms the fractography analysis was conducted on the broken tensile specimens by using SEM images
33 citations
08 Feb 2016-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the influence of friction stir processing parameters and SiO2 nano powder on the mechanical properties and the fracture mechanism of the samples were investigated, and the results showed that in the optimum condition, the nanocomposites can be fabricated with a good distribution of the reinforcing particles and without any common imperfection.
Abstract: Friction stir processing is a variant of friction stir welding, which is used to locally reform the microstructure of the base metal. In the present study, the influences of friction stir processing parameters and SiO2 nano powder on the mechanical properties and the fracture mechanism of the samples were investigated. The obtained results showed that in the optimum condition, the nanocomposites can be fabricated with a good distribution of the reinforcing particles and without any common imperfection. In this optimum condition, the mechanical properties of the fabricated samples were much better than the base metal and with very small size of the grains. Furthermore, by this technique, it was viable to increase the hardness and the strength of the nanocomposites. With the study of the effects of the number of passes and regarding the microstructural investigations, it was revealed that a rise in the number of passes can improve the distribution state of the reinforcing particles in the stir zone, which in turn can enhance the mechanical strength of the samples. However, the results of the fracture mechanism investigations suggested that the processing of the samples can deteriorate the fracture behavior of them.
21 citations
TL;DR: In this paper, the influence of alumina addition on weld appearance, microstructure and mechanical properties of metal inert gas (MIG) welded low carbon mild steel were investigated.
Abstract: In this study, influence of alumina addition on weld appearance, microstructure and mechanical properties of metal inert gas (MIG) welded low carbon mild steel were emphatically investigated. Experimental results show that all the joints were smooth with free of cracks. Microstructures of MIG and laser remelted joints show the presence of columnar and equiaxed dendrites. Furthermore, superior microhardness of MIG welded joint over alumina added and laser remelted joints is ascribed to the presence of columnar dendrites. Fractography of the tensile tested alumina added joint exhibited a mixed mode of ductile and brittle characteristics and this is attributed to the presence of acicular ferrites and bainite in the microstructure.
3 citations
TL;DR: In this article, the effect of machining parameters, viz. cutting speed, feed rate and depth of cut on the cutting force components, namely, feed force, radial force, cutting force (Fc) and surface roughness, was investigated.
Abstract: Aluminium matrix composites are of great interest for researchers in recent years because of their excellent combinations of engineering properties over traditional materials. The machinability of these aluminium matrix composites has become vital for manufacturing industries. During machining of aluminium matrix composites, the cutting forces and surface roughness are dependent on machining parameters (feed rate, cutting speed and depth of cut) and manufacturing parameters (size of the particles, volume fraction, porosity, hardness). With this backdrop, the present work is aimed at investigating the effect of machining parameters, viz. cutting speed, feed rate and depth of cut on the cutting force components, namely, feed force (Ff), radial force (Fd), cutting force (Fc) and surface roughness. The experiments were performed on 0, 5, 7 and 9 wt% B4C particulate of 88 µm size reinforced composite specimens. The prepared specimens were subjected to turning operation on a conventional lathe machine u...
3 citations