Influence of single and dual particle reinforcements on the corrosion behavior of aluminum alloy based composites
01 Jun 2018-Vol. 232, Iss: 6, pp 1464420716638111
TL;DR: In this article, the authors present the results of a study on the corrosion characteristics of the single and dual particle reinforced aluminum alloy 6063 based composites and the reinforcements of silicon carbide.
Abstract: This article presents the results of a study on the corrosion characteristics of the single and dual particle reinforced aluminum alloy 6063 based composites. The reinforcements of silicon carbide ...
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TL;DR: Particulate-reinforced metal matrix composites are of particular interest because of their ease of fabrication, low cost, and isotropic properties as mentioned in this paper, and Friction Stir Processing offers a promising alter...
Abstract: Particulate-reinforced metal matrix composites are of particular interest because of their ease of fabrication, low cost, and isotropic properties. Friction stir processing offers a promising alter...
38 citations
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01 Nov 1997
TL;DR: In this article, the pitting potentials are essentially independent of the presence or absence of reinforcement particles, as well as their volume fraction, and the presence of intermetallic particles strongly affects the corrosion and titanium/zirconium-rich particles have a particularly deleterious effect on corrosion of the 6061-Al alloy.
Abstract: : Long term immersion testing and short term electrochemical testing have been carried out on two metal matrix composites and their corresponding unreinforced alloys. The composites were 15% alumina reinforced 6061-Al alloy and an Al-Si alloy reinforced with 20, 30, 40 or 55% SiC particles. It is shown that the pitting potentials are essentially independent of the presence or absence of reinforcement particles, as well as of their volume fraction. Corrosion i shown to be generally more severe in the composites than in the unreinforced alloy and weight loss rates may be 3 or 4 times greater. The presence of intermetallic particles strongly affects the corrosion and titanium/zirconium-rich particles, believed to arise as a consequence of the processing route, have been shown to have a particularly deleterious effect on corrosion of the 6061-Al alloy.
24 citations
Journal Article•
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TL;DR: In this article, the interface between the matrix and reinforcement plays a crucial role in determining the properties of metal matrix composites (MMC) Coating of the reinforcement are some of the important techniques by which the wettability between the matrices and reinforcement can be improved and the form of interfacial harmful product can be avoided.
Abstract: The interface between the matrix and reinforcement plays a crucial role in determining the properties of metal matrix composites (MMC) Coating of the reinforcement are some of the important techniques by which the wettability between the matrix and reinforcement canbe improved and the form of interfacial harmful product canbe avoided Coatings on reinforcements, fabrication methods of the coatings and their effects on the interface and properties of metal matrix composites are reviewed in this paper
20 citations
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TL;DR: In this article, the authors summarized the structure-property characteristics of graphene-reinforced AMCs fabricated by FSP and discussed the influences of process conditions on the structure property evolutions of the composites.
Abstract: Adding reinforcement is an effective way to improve the properties of aluminum alloy. Graphene is an ideal reinforcement for the fabrication of aluminum matrix composites (AMCs) due to its excellent comprehensive performances. Friction stir processing (FSP), as a novel processing technology, is an ideal candidate for fabricating graphene-reinforced AMCs with high performances under appropriate conditions. The present paper firstly summarizes the structure-property characteristics of graphene-reinforced AMCs fabricated by FSP. Then the influences of process conditions on the structure-property evolutions of the composites are discussed. It is found that the addition of graphene leads to grain refinement and texture variation of the stir zone during FSP. Besides, mechanical properties, electrical conductivity, thermal conductivity, tribological property and corrosion resistance of the AMCs are considerably affected by the content of graphene and various microstructure evolutions induced by the added graphene. Composite of reinforcement, adding method of graphene, FSP parameters, FSP pass number and FSP path pattern are critical process conditions that determine the microstructures and properties of the AMCs. The present paper not only concludes major findings of the previous researches but also suggests future recommendations for fabrication of graphene-reinforced AMCs through FSP.
2 citations
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TL;DR: In this paper, surface composites made from an LM24 alloy reinforced with graphite and tin, with good wettability and material flow owing to the low melting point of tin, were fabricated by FSP at two rotational speeds of 1,400 and 1,000 rpm.
Abstract: Friction stir processing (FSP) is an emerging solid-state technique for preparing surface composites using various reinforcements. Ceramics and metallic particles are easily reinforced in a matrix by this technique. Surface composites made from an LM24 alloy reinforced with graphite and tin, with good wettability and material flow owing to the low melting point of tin, were fabricated by FSP at two rotational speeds of 1,400 and 1,000 rpm. Despite its low hardness, the graphite/LM24 surface composite fabricated at a higher rotational speed of 1,400 rpm exhibited better wear resistance. However, its frictional behavior was not significantly affected by the reinforcement. The fabricated surface composites with graphite and tin reinforcement as well as graphite-only reinforcement exhibited contradicting behaviors under sliding wear conditions. The post wear analysis indicated that abrasion, adhesion, layer formation, and delamination occurred on the composite surfaces.
1 citations
References
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TL;DR: In this article, the Eshelby approach is used to model composites and a program for calculating the S-tensors of a composite model is presented, along with a list of programs for an Eshelbys calculation.
Abstract: Preface 1. General introduction 2. Basic composite models 3. The Eshelby approach to modelling composites 4. Plastic deformation 5. Thermal effects and high temperature behaviour 6. The interfacial region 7. Fracture processes and failure mechanisms 8. Transport properties and environmental performance 9. Fabrication processes 10. Development of matrix microstructure 11. Testing and characterisation techniques 12. Applications Appendix 1. Nomenclature Appendix 2. Matrices and reinforcements - selected thermophysical properties Appendix 3. The basic Eshelby S-tensors Appendix 4. Listing of a program for an Eshelby calculation.
1,794 citations
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TL;DR: In this paper, the relatively low cost stir casting technique is evaluated for use in the production of silicon carbide/aluminium alloy MMCs, and the technical difficulties associated with attaining a uniform distribution of reinforcement, good wettability between substances, and a low porosity material are presented and discussed.
Abstract: Combining high specific strength with good corrosion resistance, metal matrix composites (MMCs) are materials that are attractive for a large range of engineering applications. Given the factors of reinforcement type, form, and quantity, which can be varied, in addition to matrix characteristics, the composites have a huge potential for being tailored for particular applications. One factor that, to date, has restricted the widespread use of MMCs has been their relatively high cost. This is mostly related to the expensive processing techniques used currently to produce high quality composites. In this paper, the relatively low cost stir casting technique is evaluated for use in the production of silicon carbide/aluminium alloy MMCs. The technical difficulties associated with attaining a uniform distribution of reinforcement, good wettability between substances, and a low porosity material are presented and discussed.
1,015 citations
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TL;DR: In this paper, high silicon content aluminium alloy-silicon carbide metal matrix composite material, with 10%SiC were successfully synthesized, using different stirring speeds and stirring times The microstructure of the produced composites was examined by optical microscope and scanning electron microscope The Brinell hardness test was performed on the composite specimens from base of the cast to top.
Abstract: In the present study, high silicon content aluminium alloy–silicon carbide metal matrix composite material, with 10%SiC were successfully synthesized, using different stirring speeds and stirring times The microstructure of the produced composites was examined by optical microscope and scanning electron microscope The Brinell hardness test was performed on the composite specimens from base of the cast to top The results revealed that stirring speed and stirring time influenced the microstructure and the hardness of composite Microstructure analysis revealed that at lower stirring speed with lower stirring time, the particle clustering was more Increase in stirring speed and stirring time resulted in better distribution of particles The hardness test results also revealed that stirring speed and stirring time have their effect on the hardness of the composite The uniform hardness values were achieved at 600 rpm with 10 min stirring But beyond certain stir speed the properties degraded again An attempt is made in this study to establish the trend between processing parameters such as stirring speed and stirring time with microstructure and hardness of composite
428 citations
"Influence of single and dual partic..." refers background or result in this paper
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TL;DR: In this paper, the authors present a brief state of the art of advanced ceramics, metal matrix and ceramic matrix composites, focusing on process technologies involved, applications and future of these "potential" materials.
Abstract: The paper presents a brief state of the art of advanced ceramics, metal matrix and ceramic matrix composites. The attention is focused on process technologies involved, applications and future of these “potential” materials. Some experimental results are included. The future of advanced materials is related to systems solutions, economical manufacturing processing, diverse markets and new technologies. The new materials will provide the opportunity for growth to a new and healthier balance, with vibrant commercial sector delivering an improved quality of life and stronger technology base.
404 citations
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01 Jan 2016
TL;DR: The standard guide for preparation of metallographic specimens is universally compatible with any devices to read and is available in the digital library an online access to it is set as public so you can get it instantly.
Abstract: standard guide for preparation of metallographic specimens is available in our digital library an online access to it is set as public so you can get it instantly. Our digital library saves in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Kindly say, the standard guide for preparation of metallographic specimens is universally compatible with any devices to read.
360 citations
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