Preparation and Characterization of Aluminium Metal Matrix Composites

Metal-Matrix Composites (MMCs) are novel composite materials in which nano/micro-phase such as particles or rods like structured materials are reinforced with metals or alloys to improve the physical, mechanical, wear and other properties. The results of previous works have shown that the addition of B4C reinforcement to aluminium alloys has improved the hardness, tensile strength and Young’s modulus. Hence, the present work is focused on development and characterization of B4C reinforced MMCs. evaluating the outcome of the reinforcement on the physical properties such as wear property studies were carried out. The wear results exhibited reduction in wear volume compared to the unreinforced alloy samples and the coefficient of friction is beneath at lofty loads.

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Microstructural Characterization of Microwave Processed Al-SiCP Metal Matrix Composites Subjected to Extrusion

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.895.115 ◽

2019 ◽

Vol 895 ◽

pp. 115-121

Author(s):

C. Honnaiah ◽

M.S. Ashok Kumar ◽

M.S. Srinath ◽

S.L. Ajit Prasad

Keyword(s):

Metal Matrix Composites ◽

Metal Matrix ◽

Microstructural Characterization ◽

Light Weight ◽

Matrix Composites ◽

Engine Efficiency ◽

Aerospace Applications ◽

Engine Components ◽

Aluminium Metal

Aluminium Metal Matrix composites (AMC) are known to be very promising light weight materials with enhanced mechanical properties which are used in various industries [1]. Aluminium metal–matrix composites reinforced with SiC and Al2O3 are used in automotive and aerospace applications due to reduction in weight and increase the engine efficiency and thereby reducing fuel consumption [2]. Replacing cast iron engine components with light-weight Al alloys requires overcoming of the poor adhesion and seizure resistance of Aluminium achieved by dispersing SiC, Al2O3 or graphite particles in aluminium, Considerable reduction in wear and friction can be achieved by the use of these reinforcement particulate [3].

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Synthesis and Mechanical Characterization of Micro B4C Particulates Reinforced AA2124 alloy Composites

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i2.23.11954 ◽

2018 ◽

Vol 7 (2.23) ◽

pp. 255

Author(s):

Fazil N ◽

V V Venkataramana ◽

Madeva Nagaral ◽

V Auradi

Keyword(s):

Metal Matrix Composites ◽

Metal Matrix ◽

Mechanical Characterization ◽

Base Material ◽

Casting Process ◽

Stir Casting ◽

Matrix Composites ◽

Micro Particles ◽

Aluminium Metal

In the current era of aerospace, automobile and other various industries, light weighed aluminium metal matrix composites plays a very major role. Metal matrix composites are composed of base material as metallic which is reinforced with ceramic particulate as reinforcement material. This paper consists of the preparation of micro composites by two step stir casting process by the addition of B4C particulates (80-90µm) into the AA2124 matrix by varying different weight percentages of 3% and 6% at a temperature of 730-750˚C. Further once the composites are prepared are subjected to characterization, the SEM revealed that there is good uniform distribution of micro particles in the aluminum by exhibiting a good bonding with matrix and EDS confirmed the presence of B and C elements. Different properties were evaluated like density, hardness, ultimate tensile strength and yield strength which revealed that there is an increase in the mechanical properties than compared to the base metal.

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