Structure and properties of short alumina fibre reinforced AlSi18CuNi produced by stir casting

El-Azim, A.N. Abd; Kassem, Magdy; El-Baradie, Z.M.; Waly, Mostafa I.

doi:10.1016/s0167-577x(02)00647-x

Cited by 18 publications

(15 citation statements)

References 11 publications

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“…Corrosion resistance of the hybrid composite was superior in basic solution as compared to acidic solution. Azim et al (2002) studied the mechanical and wear properties of the stir cast AlSi18CuNi/ Al 2 O 3p composite. They observed that the composite with 2% by weight Al 2 O 3 possessed a tensile strength and hardness values of 505 MPa and 123Hv over that of unreinforced matrix alloy.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

A Review on Mechanical and Tribological Behaviors of Stir Cast Aluminum Matrix Composites.

Kala¹,

Mer

Kumar³

2014

Procedia Materials Science

305

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In the past few years the global need for low cost, high performance and good quality materials has caused a shift in research from monolithic to composite materials. In case of MMC's, aluminum matrix composite due their high strength to weight ratio, low cost and high wear resistance are widely manufactured and used in structural applications along with aerospace and automobile industry. Also a simple and cost effective method for manufacturing of the composites is very essential for expanding their application. Reinforcements like particulate alumina, silicon carbide, graphite, fly ash etc can easily be incorporated in the melt using cheap and widely available stir casting method. This paper presents a review on the mechanical and tribological properties of stir cast aluminum matrix composites containing single and multiple reinforcement. Addition of alumina to aluminum has shown an increase in its mechanical and tribological properties. Organic reinforcement like fly ash, coconut ash also improved the tensile and yield strength. Self-lubricating property of graphite improved the machinability of aluminum. Many authors have also reported about modified stir casting route.

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Section: Mechanical Propertiesmentioning

confidence: 99%

A Review on Mechanical and Tribological Behaviors of Stir Cast Aluminum Matrix Composites.

Kala¹,

Mer

Kumar³

2014

Procedia Materials Science

305

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“…fraction of alumina particles the UTS and YS of the resulting composite increased. Azim et al [25] examined that the YS of casted composite increased while the UTS and % elongation of the composite decreased with the addition in the % vol. fraction of reinforcing material when AA2024 was reinforced with Al 2 O 3 particles.…”

Section: A Mechanical and Microstructural Examinationmentioning

confidence: 99%

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Kaushik¹,

Singhaal²

2017

IJET

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Abstract--The drift of research work from monolithic aluminum alloy to composite materials like Metal Matrix Composites (MMC's) is due to the world-wide proviso for economical, high working performance and superior quality materials. Metal matrix composites especially aluminum matrix composites (AMC's) due to their excellent strength with respect to their weight, superior wear resistance, economical and high corrosion resistance are extensively produced and utilized in several applications like, architectural components, structural applications, aerospace, automobile industry, ship building and many sports items and electrical and electronic components. The reinforcements like SiC, B 4 C, Al 2 O 3 , TiB 2 , Red mud, Graphite, Fly ash, and Coconut ash etc. can be easily incorporated as reinforcement agents in the molten melt by employing the economical and widely used stir casting technique, which improves strength, stiffness, fatigue, hardness, wear and creep properties of the AMCs. This paper gives an overview of mechanical, microstructural and wear performances of aluminum centered metal matrix composites produced by stir casting process reinforced with single and multiple types of reinforcements. The problems like reinforcement-metal matrix bonding, distribution of particles, wettability of reinforcing particles and agglomeration phenomenon are discussed in this paper. The effect of various reinforcement particles on aluminum matrix composites on mechanical properties like uts, ys, stiffness, hardness, fatigue, % E, wear and on resulting microstructure is discussed. The Modified and dual step stir casting technique for the fabrication of AMCs is also discussed in this paper. Keywords: Aluminum matrix composite (AMC), stir casting, reinforcement, mechanical properties, wear behavior I. INTRODUCTIONMetal based matrix composites reinforced with ceramic agents have a wide range of applications in aerospace, automobile, structural components and defense sector. Monolithic aluminum alloys have limitations in achieving good combinations of mechanical properties like strength, toughness, stiffness, wear resistance and density. Metal matrix composites are produced to overcome these shortcomings and to encounter the worldwide requirement for light weight materials with higher specific strength, corrosion resistant, high stiffness and excellent wear resistant properties [1][2]. The properties of aluminum alloy like low density, light weight, easy processing technique and fine engineering characterstics favored it as matrix material in MMC's [3]. The aluminum matrix series like AA2xxx, AA5xxx, AA6xxx, and AA7xxx have numerous applications in aerospace, defense instrument, architectural and structural components, automobile, sports good, and ship building [1][2][3][4].For the fabrication of metallic matrix composites several type of manufacturing methods are employed. The choice of appropriate manufacturing method highly alters the resulting composite microstructure, dispersion of ceramic agents, interfacial bonding betwe...

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“…Various processing methods have been reported to achieve high performance metal matrix composites. Examples are stir-casting, 1) infiltration casting, 2) direct-melt oxidation, 3) hot dipping, 4,5) and sintering of ball-mill activated mixture of powders. 6,7) Reinforcement phases are either added directly 1,2,6) or formed in-situ by a reaction occurring during processing.…”

Section: Introductionmentioning

confidence: 99%

“…Examples are stir-casting, 1) infiltration casting, 2) direct-melt oxidation, 3) hot dipping, 4,5) and sintering of ball-mill activated mixture of powders. 6,7) Reinforcement phases are either added directly 1,2,6) or formed in-situ by a reaction occurring during processing. [3][4][5]7) Problems, both technical and material-wise, innate to existing processing methods are nonuniform reinforcement phase distribution, 1) weak bonding at interface of reinforcement/matrix, 8) undesirable chemical reaction at interface, 9) slow kinetics of reaction, 5) trapped porosity, 10) and others.…”

Section: Introductionmentioning

confidence: 99%

“…6,7) Reinforcement phases are either added directly 1,2,6) or formed in-situ by a reaction occurring during processing. [3][4][5]7) Problems, both technical and material-wise, innate to existing processing methods are nonuniform reinforcement phase distribution, 1) weak bonding at interface of reinforcement/matrix, 8) undesirable chemical reaction at interface, 9) slow kinetics of reaction, 5) trapped porosity, 10) and others. Attempting to address the existing processing problems, this research explored powder forging as a simple but effective method for synthesis of aluminum matrix composite.…”

Section: Introductionmentioning

confidence: 99%

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Aluminum-4 mass%Copper/Alumina Composites Produced from Aluminum Copper and Rice Husk Ash Silica Powders by Powder Forging

et al. 2010

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This research demonstrated simple but effective process to produce Al-4 mass%Cu/Al 2 O 3 composites, by powder metallurgy method. The starting powders were aluminum, copper, and rice husk ash silica. Processing was by sintering at 650 C for 3.6 ks, hot forging of sintered billet at 600 C under 660 MPa pressure, followed by heat treatment. Hot forging of sintered billet induced plastic deformation of the matrix as well as fractured the porous silica, thus created ultimate contact between the two phases. The following heat treatment produced alumina, which was the reinforcement phase, by chemical reaction between fractured rice husk ash silica and aluminum matrix. The fabricated composite containedand -alumina, and elemental silicon in matrix of aluminum solid solution. Addition of copper facilitated sintering by formation of liquid phase, as well as yielding a matrix material which can be strengthened by precipitation hardening. Maximum hardness obtained was 44 HRA, for composite material using 15 vol% rice hush ash silica. Peak hardness of the matrix was in range of 130-136 HV, after aging for 28.8 to 43.2 ks.

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Structure and properties of short alumina fibre reinforced AlSi18CuNi produced by stir casting

Cited by 18 publications

References 11 publications

A Review on Mechanical and Tribological Behaviors of Stir Cast Aluminum Matrix Composites.

A Review on Mechanical and Tribological Behaviors of Stir Cast Aluminum Matrix Composites.

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Aluminum-4 mass%Copper/Alumina Composites Produced from Aluminum Copper and Rice Husk Ash Silica Powders by Powder Forging

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