Investigating effects of process parameters on microstructural and mechanical properties of Al5052/SiC metal matrix composite fabricated via friction stir processing
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.
About: This article is published in Materials & Design.The article was published on 2012-05-01. It has received 291 citations till now. The article focuses on the topics: Friction stir processing & Metal matrix composite.
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TL;DR: A comprehensive review of surface composites via friction stir processing is presented in this article, where the underlying mechanisms in strengthening of FSP-processed surface composite are discussed with reported models.
408 citations
Cites background or methods from "Investigating effects of process pa..."
...Use of arge diameter shoulders led to high heat generation and enhanced aterial flow whereas smaller diameters resulted in formation of efects in the composite (Elangovan and Balasubramanian, 2008)....
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...The ool probe is also responsible for defect formation in the SZ as ndicated by Elangovan and Balasubramanian (2008) in FSW of A2219 alloy....
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TL;DR: In this paper, a review of the control strategies for back support, weld thinning, and keyhole defects in friction stir welding (FSW) is presented, which are basically divided into self-supported FSW, non-weld-thinning FSW and friction stir-based remanufacturing.
350 citations
TL;DR: Friction stir welding (FSW) has achieved remarkable success in the joining and processing of aluminium alloys and other softer structural alloys, however, it has not been entirely successful in the manufacturing of different desired materials essential to meet the sophisticated green globe requirements as discussed by the authors.
347 citations
TL;DR: In this paper, the performance of the surface composites is evaluated through micro hardness and universal tensile tests and the role of reinforcement and number of passes on properties are also evaluated.
Abstract: Improved surface properties with the retainment of bulk properties are necessary for a component for enhanced wear characteristics. Friction stir processing (FSP) is used to produce such surface composites. Fabrication of 5083 aluminum alloy with reinforced layers of boron carbide (B 4 C) through FSP was carried out. Micro and nano sized B 4 C particles were used as reinforcements. The friction processed surface composite layer was analyzed through optical and scanning electron microscopical studies. The number of passes and the size of reinforcement play a vital role in the development of surface composites by FSP. Mechanical properties of the friction stir processed surface composites were evaluated through micro hardness and universal tensile tests. The results were compared with the properties of the base metal. The role of reinforcement and number of passes on properties were also evaluated. Tribological performance of the surface composites is tested through pin on disk test. The surface composite layer resulted in three passes with nano particle reinforcement exhibited better properties in hardness, tensile behavior and wear resistance compared to the behavior of the base metal.
202 citations
Cites background from "Investigating effects of process pa..."
...[22] Al–SiC nano particles with four passes....
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...[22] Dolatkhah A, Golbabaei P, Besharati Givi MK, Molaiekiya F....
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...[22] have achieved maximum of 116 Hv hardened in FSP of 5052 Al with 50 nm SiC particles due to severe grain reduction....
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TL;DR: In this article, the main application and achievements of FSP processes are presented, based on literature review, and the last part is focused on microstructure refinement and information about friction stir alloying as well as friction stir processing with ultrasonic vibration.
175 citations
References
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Book•
07 Nov 1996
TL;DR: In this paper, the authors discuss the extent to which we are able to formulate quantitative, physically-based models which can be applied to metal-forming processes, and the subjects treated in this book are all active research areas and form a major part of at least four regular international conference series.
Abstract: Paperback. The annealing of deformed materials is of both technological importance and scientific interest. The phenomena have been most widely studied in metals, although they occur in all crystalline materials such as the natural deformation of rocks and the processing of technical ceramics. Research is mainly driven by the requirements of industry, and where appropriate, the book discusses the extent to which we are able to formulate quantitative, physically-based models which can be applied to metal-forming processes.The subjects treated in this book are all active research areas, and form a major part of at least four regular international conference series. However, there have only been two monographs published in recent times on the subject of recrystallization, the latest nearly 20 years ago. Since that time, considerable advances have been made, both in our understanding of the subject and in the techniques available to the researcher.The
7,149 citations
Book•
30 Mar 2007TL;DR: Friction stir welding (FSW) is a relatively new solid-state joining process that is used to join high-strength aerospace aluminum alloys and other metallic alloys that are hard to weld by conventional fusion welding as discussed by the authors.
Abstract: Friction stir welding (FSW) is a relatively new solid-state joining process. This joining technique is energy efficient, environment friendly, and versatile. In particular, it can be used to join high-strength aerospace aluminum alloys and other metallic alloys that are hard to weld by conventional fusion welding. FSW is considered to be the most significant development in metal joining in a decade. Recently, friction stir processing (FSP) was developed for microstructural modification of metallic materials. In this review article, the current state of understanding and development of the FSW and FSP are addressed. Particular emphasis has been given to: (a) mechanisms responsible for the formation of welds and microstructural refinement, and (b) effects of FSW/FSP parameters on resultant microstructure and final mechanical properties. While the bulk of the information is related to aluminum alloys, important results are now available for other metals and alloys. At this stage, the technology diffusion has significantly outpaced the fundamental understanding of microstructural evolution and microstructure–property relationships.
4,750 citations
TL;DR: In this article, the authors deal with the fundamental understanding of the process and its metallurgical consequences, focusing on heat generation, heat transfer and plastic flow during welding, elements of tool design, understanding defect formation and the structure and properties of the welded materials.
1,811 citations
TL;DR: Friction stir welding (FSW) is an emerging metalworking technique that can provide localized modification and control of microstructures in near-surface layers of processed metallic components.
Abstract: Friction stir processing (FSP), developed based on the basic principles of friction stir welding (FSW), a solid-state joining process originally developed for aluminum alloys, is an emerging metalworking technique that can provide localized modification and control of microstructures in near-surface layers of processed metallic components. The FSP causes intense plastic deformation, material mixing, and thermal exposure, resulting in significant microstructural refinement, densification, and homogeneity of the processed zone. The FSP technique has been successfully used for producing the fine-grained structure and surface composite, modifying the microstructure of materials, and synthesizing the composite and intermetallic compound in situ. In this review article, the current state of the understanding and development of FSP is addressed.
955 citations
TL;DR: In this article, the authors reported the first results using friction stir processing (FSP) for aluminum alloys and showed that FSP of a commercial 7075 Al alloy resulted in significant enhancement of superplastic properties.
732 citations