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 paper , the authors focused on the parameters used during welding to obtain good weld quality, and the FSW joint efficiency was obtained by selecting the optimal combination of tool rotation speed, welding speed, and applied axial load.
Abstract: Abstract Friction stir welding (FSW) is gaining attention over fusion welding is due to exceptional advantages. The advantages in FSW are superior joint properties, less preparation time, fumeless. FSW welding is widely employed in the automotive and aerospace sectors to join similar and dissimilar aluminium components. Many research articles have published particle reinforced Aluminium composite (AMC) FSW welding and reported improvement in mechanical properties. The paper focuses on the parameters used during welding to obtain good weld quality. The FSW joint efficiency of (AMC) varies between 80 and 95 percent, and joint efficiency is obtained by selecting the optimal combination of tool rotation speed, welding speed, and applied axial load. The tool rotation speed varies between 600 and 1200 rpm, with a 30–110 mm/min welding speed for uniform grain size in the joint using moderate axial loads. The tool profile and process parameters significantly impact welded joints' hardness and tensile behavior. The paper outlines the FSW process, operating ranges, and type of tools been used, which may be helpful for future research in the domain.
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06 Dec 2022-Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
TL;DR: In this article , a review article is presented to understand better reinforcement particles in the weld line of a friction stir welding process, which is a solid-state environment-friendly joining process with many advantages over all fusion welding processes.
Abstract: Friction stir welding is a solid-state environment-friendly joining process with many advantages over all fusion welding processes. Many variants in friction stir welding are used for uplifting the process to its maximum possible extent. One such variant is particle reinforcement in the weldment, which is used for improving the mechanical properties by enhancing the metallurgical aspects in the weld region. Generally, micro- and nano-sized ceramic particles are used for reinforcing, which have a much higher melting point than the materials to be joined. From the literature studies, particle size plays a prominent role in attaining better mechanical properties in reinforcing techniques. In addition, an increase in particle size decreases the corresponding mechanical property. Higher heat input conditions like higher tool rotational speed and low welding speed are preferred as they better mix reinforced particles with the matrix material in the weld zone. However, the higher input conditions in the regular friction stir welding process coarsen the grains, thereby deteriorating the mechanical properties of the joint. Increasing the number of passes and switching the direction between the passes leads to uniform distribution of particles and enhance the mechanical properties. This review article's main aim is to understand better reinforcement particles in the weld line of a friction stir welding process. Also, the author emphasizes reinforcing the combination of nano and microparticles to reduce the cost of reinforcement without compromising the mechanical properties. The work mentioned above is missing in the open literature.
2 citations
TL;DR: Alumina and monel superalloy was successfully joined by active metal brazing technique using Ticusil (68.8Ag-26.7Cu-4.5Ti in wt%) filler alloy in a vacuum furnace at 910°C for 10 min under a vacuum as mentioned in this paper.
Abstract: Alumina and monel superalloy was successfully joined by active metal brazing technique using Ticusil (68.8Ag-26.7Cu-4.5Ti in wt%) filler alloy in a vacuum furnace at 910°C for 10 min under a vacuum...
2 citations
TL;DR: In this paper , the authors reviewed the work carried out in the field of FSW/FSP welding AA5083 and AA6082 with carbide and oxide as reinforced nanoparticles.
Abstract: To decrease impacts on the environment and maintain competitiveness in the market, various industries (for example, fabrication and construction) are concentrating on minimizing material and energy usage. Aluminium (Al) and its alloys are contending possibilities for various complex applications to meet these industrial needs since they have improved qualities like good weight-to-strength ratios. Fusion welding causes the joints to deteriorate while joining Al. Friction stir welding (FSW) or friction Stir Processing (FSP) creates joints below melting point temperatures, eliminating the drawbacks of excessive heat input but necessitating an increase in the joint’s final characteristics. Nanoparticle reinforcement is an emerging field that provides great methods to create composite joints with improved joint characteristics. The surface attributes of composite joints can be improved, including hardness, strength, corrosion resistance, and wear resistance. This paper critically reviews the work carried out in the field of FSW/FSP welding AA5083 and AA6082 with carbide and oxide as reinforced nanoparticles. Further trends in nanoparticle reinforcement, oxide and carbide effect on welding parameters, microstructural formation, and mechanical properties are being analyzed. Analysis shows that the diffusion of the reinforcing nanoparticles, which affects the joint characteristics, is significantly influenced by FSW/FSP parameters. Additionally, the dispersed nanoparticles enhance joint characteristics and help refine grains. The kind, quantity, & size of reinforced nanoparticles and the welding conditions greatly influence the joint characteristics and microstructures in similar and different Al welds. Finally, prospects for a reinforced FSW are examined, followed by a look ahead and concluding notes.
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References
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Journal Article•
392 citations
TL;DR: In this paper, the influence of tool rotational speed, traverse speed, number of FSP passes, shift of rotational direction between passes and particle size was studied on distribution of SiC particles in metal matrix, microstructure, microhardness and wear properties of specimens.
291 citations
TL;DR: In this paper, the effect of processing parameters on the mechanical and microstructural properties of dissimilar AA6082-AA2024 joints produced by friction stir welding was analyzed.
257 citations
TL;DR: In this paper, two types of friction stir spot welding (FSSW) are applied to join the 5052-H112 aluminum alloy sheets with 1mm thickness and then the effect of the rotational speed and dwell time on microstructure and mechanical properties is discussed.
254 citations
25 Jan 2011-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the authors investigated the structural, mechanical properties and wear resistance of FSP-processed materials as a function of volume fraction of SiC particles and found that adding micro-and nano-sized particles decreases the tensile strength and percent elongation.
Abstract: In this experiment, copper-base composites reinforced with 30 nm and 5 μm SiC particles are fabricated on the surface of a purecopper sheetvia friction stir processing (FSP). Microstructure, mechanical properties and wear resistance of friction stir processed (FSPed) materials are investigated as a function of volume fraction of SiC particles. Results show that, applying FSP, without SiC particles, increases the percent elongation significantly (more than 2.5 times) and decreases copper's strength. Adding micro- and nano-sized SiC particles decreases the tensile strength and percent elongation. Increasing the volume fraction or decreasing the reinforcing particle size enhances the tensile strength and wear resistance and lowers the percent elongation.
248 citations