Interface structure in carbon and graphite fiber reinforced 2014 aluminum alloy processed with active fiber cooling

Seong, Hwan Goo; López, H. F.; Robertson, Donald; Rohatgi, Pradeep K.

doi:10.1016/j.msea.2007.10.081

Cited by 52 publications

(27 citation statements)

References 20 publications

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“…[6][7][8] These reinforcing fibers are used for the additional function of extracting the heat from the composite melt in order to control the cooling rate. This modified process cannot eliminate the inherent limitations in the infiltration processes, but it can provide better control over the solidification microstructure during the solidification step and can improve the quality of the resulting composites.…”

mentioning

confidence: 99%

Modeling the Effect of Active Fiber Cooling on the Microstructure of Fiber-Reinforced Metal Matrix Composites

Nguyen

Peterson

Gupta

et al. 2009

Metall Mater Trans A

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A modified pressure infiltration process was recently developed to synthesize carbon-fiberreinforced aluminum matrix composites. In the modified process, the ends of carbon fibers are extended out of the crucible to induce selective cooling. The process is found to be effective in improving the quality of composites. The present work is focused on determining the effect of the induced conductive heat transfer on the composite system through numerical methods. Due to the axisymmetry of the system, a two-dimensional (2-D) model is studied that can be expanded into three dimensions. The variables in this transient analysis include the fiber radius, fiber length, and melt superheat temperature. The results show that the composite system can be tailored to have a temperature on the fiber surface that is lower than the melt, to promote nucleation on the fiber surface. It is also observed that there is a point of inflection in the temperature profile along the particle/melt interface at which there is no temperature gradient in the radial direction. The information about the inflection point can be used to control the diffusion of solute atoms in the system. The result can be used in determining the optimum fiber volume fraction in metal matrix composite (MMC) materials to obtain the desired microstructure.

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mentioning

confidence: 99%

Modeling the Effect of Active Fiber Cooling on the Microstructure of Fiber-Reinforced Metal Matrix Composites

Nguyen

Peterson

Gupta

et al. 2009

Metall Mater Trans A

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“…The carbon fiber was originally made of polyacrylonitrile (PAN) by Japan Toray Co. were chopped into 5±1 mm length then the agent sizing on the fibers removed by heating in 500 ºC for 30 minutes in aerated furnace. The chemical structure of fiber is similar to the graphite [15], consisting of graphene layers stacked parallel on each other [16]. The carbon fiber has high chemical resistance at high temperature [17] but the fibers are fragile.…”

Section: Test Materialsmentioning

confidence: 99%

Orthogonal experimental design applied for wear characterization of aluminum/Csf metal composite fabricated by the thixomixing method

2015

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High silicon content aluminum alloy (hypereutectic) possess good tribological characteristics with low coefficients of friction, when embedded with short carbon fiber (Csf), making this composite a good material choice where good wear and high strength properties are required in light weight components..There is no previously published information available, to the knowledge of the authors, regarding the influence of wear parameters and their interactions on the tribological behavior of Csf reinforced metal matrix composites. In this study a Taguchi design of experiment (DoE) was conducted to optimize and analyze the effects of the wear parameters on the tribological properties of Al/Csf metal matrix composite.A novel thixomixing method which was used to process the metal within the semisolid state was employed to embed short carbon fibers homogenously into the metal matrix. The influences of the sliding speed, applied load and volume fraction, of Csf on the specific wear rate and coefficient of friction were examined, with each of these input parameters tested at three levels(0, 4.2, 8.1 %vol.). The results were indicated that Al/Csf composite had better tribological properties than Al alloy due to which contains carbon as solid lubricant. According to the statistical analysis, the influence of volume fraction of carbon fiber on wear parameters was ranked first; so the load and sliding speed are at the following rankings. The contribution percentage for each parameter was determined by the analysis of variance. The relatively good interfacial adherence of carbon fiber and matrix alloy were demonstrated. The coherent and adherent graphite-rich layer on the worn surface was characterized using scanning electron microscopy (SEM).

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“…With decades of research, the following methodologies have been proposed in order to address the above problems: (1) Optimizing the fabrication parameters such as applying an appropriate pressure to promote infiltration, limiting the high temperature contact time or using low temperature fabrication methods such as powder metallurgy [19,[22][23][24]. These methods are widely accepted, however, to be not enough to solve the problem of interfacial reactions.…”

Section: Introductionmentioning

confidence: 99%

Carbon Materials Reinforced Aluminum Composites: A Review

Huang

Ouyang

Zhang

et al. 2014

Acta Metall. Sin. (Engl. Lett.)

109

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Carbon materials, including carbon fibers, graphite, diamond, carbon foams, carbon nanotubes, and graphene, are attractive reinforcements for aluminum matrix composites due to their excellent mechanical and/or physical properties as well as light weight. Carbon materials reinforced aluminum (C/Al) composites are promising materials in many areas such as aerospace, thermal management, and automobile. However, there are still some challenging problems that need to be resolved, such as interfacial reactions, low wettability, and anisotropic properties. These problems have limited the use of these composites. This review mainly focuses on the categories, fabrication processes, existing problems and solutions, coatings and interfaces, challenges and opportunities of C/Al composites so as to provide a useful reference for future research.

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Interface structure in carbon and graphite fiber reinforced 2014 aluminum alloy processed with active fiber cooling

Cited by 52 publications

References 20 publications

Modeling the Effect of Active Fiber Cooling on the Microstructure of Fiber-Reinforced Metal Matrix Composites

Modeling the Effect of Active Fiber Cooling on the Microstructure of Fiber-Reinforced Metal Matrix Composites

Orthogonal experimental design applied for wear characterization of aluminum/Csf metal composite fabricated by the thixomixing method

Carbon Materials Reinforced Aluminum Composites: A Review

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