Aluminum matrix composites based on preceramic-polymer-bonded SiC preforms

Thünemann, Maik; Beffort, O.; Kleiner, S.; Vogt, Ulrich

doi:10.1016/j.compscitech.2007.01.001

Cited by 27 publications

(14 citation statements)

References 7 publications

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“…[3] with boundary conditions (Eqs. [5] through [11]) and initial conditions (Eq. [12]) can be solved to obtain the temperature distribution in the fiber and the melt.…”

Section: A Energy Equationsmentioning

confidence: 99%

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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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“…[3] with boundary conditions (Eqs. [5] through [11]) and initial conditions (Eq. [12]) can be solved to obtain the temperature distribution in the fiber and the melt.…”

Section: A Energy Equationsmentioning

confidence: 99%

“…[2] In the squeeze infiltration method, a mixture of reinforcement and matrix melt is poured into a crucible and subjected to high pressure to eliminate porosity. [3][4][5] The mixture is then allowed to solidify and form the composite. Therefore, this process consists of two steps, including both infiltration and solidification.…”

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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“…SiOC micro-cellular foams of similar relative density ($86 vol.% porosity) were prepared using a silicone resin preceramic polymer (MK-Wacker Chemie, Burghausen, Germany) and poly-methylmetacrylate micro-beads (PMMA, Altuglas BS, Altuglas International, Arkema Group, Rho (MI), Italy) of different nominal size (10,35,50 lm, samples named S10, S35, S50, respectively) acting as sacrificial filler. [19,20] The PMMA size was selected in order to verify the effect of cell size on molten metal impregnation, and consequently on the final properties of the micro-composite material.…”

Section: Preparation Of Micro-cellular Sioc Preformsmentioning

confidence: 99%

“…These advantages include containing a higher volume fraction of a desired second phase, superior mechanical properties (especially toughness) due to a unique combination of high stiffness of the ceramic and plastic deformation capability of the metal phase, or the presence of synergistic effects for some properties [7]. Thus, papers have appeared in the scientific literature dealing with the infiltration of metal into sintered ceramic powder performs [8][9][10][11], interconnected ceramic fibers [12,13], or into ceramic foams [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Ceramic foam-reinforced Al-based micro-composites

Vaucher

Kuebler

Beffort

et al. 2008

Composites Science and Technology

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“…Srivatsan et al [4] conducted a study of the high cycle fatigue and investigated the fracture behavior of 7034/SiC/15p-UA and 7034/SiC/15p-PAmetalmatrix composites. The modulus, strength and the ductility of the two composite microstructures decreased with an increase in temperature.…”

Section: Silicon Carbide Reinforced Amcmentioning

confidence: 99%

Study of Aluminium Metal Matrix Composites – Review

2017

IJRTER

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Metal matrix composites have superior mechanical properties in comparison to metals over a wide range of operating conditions. This makes them an attractive option in replacing metals for various engineering applications. This paper provides a literature review, on machining of Aluminium metal matrix composites (AMMC) especially the particle reinforced Aluminium metal matrix composites. This paper is an attempt to give brief account of recent work over AMMC. By suitably selecting the machining parameters, machining of AMMC can be made economical. Keywords -Aluminium metal matrix composites, Reinforcement, Cutting speed, Feed, Depth of cut, Surface finish, Mach inability etc I. INTRODUCTION In the outlook now days, finding ways to develop new structural materials with higher strength to weight ratios is one of the biggest challenges in the transportation and aerospace industry is. Properties like high specific strength, stiffness, better wear resistance and improved elevated temperature properties compared to the conventional metals and alloys are the key reasons for the increasing attention towards Metal Matrix Composites (MMCs). Composite materials consist of two or more materials that differ in chemical and physical properties and are not soluble in one another. The primary constituent in a composite material is the matrix phase that provides load transfer and structural integrity, while the reinforcement to enhance mechanical properties. The matrix and reinforcement materials can either be organic (polymers), inorganic (ceramic or glass) or metallic (aluminium, titanium, etc.). The most common forms of reinforcement materials are fibers (long and short), or particulates. Aluminium and its alloys have attracted most attention as base metal in metal matrix composites [1] . Composite materials have superior specific properties (high strength to weight ratio) compared to metals, high stiffness and good damage resistance over a wide range of operating conditions, making them an attractive option in replacing conventional materials for many engineering applications. Important properties of composite materials are: improved strength & stiffness, excellent fatigue resistance, high heat resistant, high wear resistant, high corrosion resistant, low weight etc. By suitable arrangement of metal matrix and reinforcement addition, it is possible to obtain desired properties for a particular application.Matrix materials in Metal Matrix Composites (MMC) are aluminium, magnesium and titanium alloys. Reinforcing materials in MMC are silicon carbide, boron carbide, alumina and graphite in the form of particles, short fibers (whiskers) or long fibers. In Aluminium Metal Matrix Composites (AMMC), matrix material is aluminium and reinforcement materials are silicon carbide, aluminum oxide, boron carbide, graphite etc. in the form of fibers, whiskers & particles. This paper discusses the important aspects of machining of MMC especially the Aluminium metal matrix composites. Fibers are the important class of reinforcements...

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Aluminum matrix composites based on preceramic-polymer-bonded SiC preforms

Cited by 27 publications

References 7 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

Ceramic foam-reinforced Al-based micro-composites

Study of Aluminium Metal Matrix Composites – Review

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