Abstract
In the current investigation, efforts are being made to produce an Al2014-Al2O3p composite with variable particle size of 88 mm by liquid stir casting route. 9, 12 and 15 weight proportions of Al2O3p were added to the Al2014 base alloy. By using SEM and EDS testing, microstructural studies have been conducted. Al2014-9, 12 and 15 weight proportion of Al2O3p composites mechanical behavior is determined in line with ASTM standards. Electron microscopic images showed that alumina (Al2O3p) particles are dispersed uniformly within the Al2014 composite matrix. EDS study confirmed the proximity of Al and O elements to composites reinforced by Al2O3p. It is also found that Al2014-Al2O3p composite hardness, UTS, and yield strength are improved by the addition of 9, 12 and 15 weight proportion of Al2O3p. Due to the addition of alumina particles in the Al2014 matrix alloy, the ductility of the produced composites decreases. Tensile fractography is performed using SEM to consider the mechanisms for failure.
Highlights
Metal–matrix composites (MMCs) attract attention for applications like packing, substrates and support structure for electronic equipment and a variety of automotive components because of their comprehensive features such as low density, high rigidity, low thermal expansion coefficient, high thermal conductivity, high strength and high use resistance [1,2,3,4]
Low wettability implies the liquid matrix will not wet the surface of the strengthening particles subsequently they essentially drift on a superficial level attributable to surface tension, enormous surface space, maximum free energy of the surfaces at an interface and nearness of the oxide layer on the surface of the liquid metal
The electron microphotographs shows that the strengthened composite grain size (Fig.1 b-d) is smaller contrasted to the base alloy without alumina particles (Fig. 1 a) due to the introduction of the alumina particles into liquefy often serve as sites of heterogeneous nucleation throughout the solidification
Summary
Metal–matrix composites (MMCs) attract attention for applications like packing, substrates and support structure for electronic equipment and a variety of automotive components because of their comprehensive features such as low density, high rigidity, low thermal expansion coefficient, high thermal conductivity, high strength and high use resistance [1,2,3,4]. The present study mainly deals with the preparation, characterization and evaluation of mechanical and fractographic properties of Al2014 alloy reinforced with different weight percentages (0, 9, 12, and 15) of alumina particles by using above mentioned optimized process parameters.
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