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Microstructure characterization and tensile properties of al-15mg2si-xysz hybrid composite

Sukiman, N. A. and Ghandvar, H. and Abubakar, T. A. and Ci, W. Y. (2019) Microstructure characterization and tensile properties of al-15mg2si-xysz hybrid composite. Malaysian Journal of Microscopy, 15 (1). pp. 30-37. ISSN 1823-7010

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Official URL: https://www.malaysianjournalofmicroscopy.org/ojs/i...

Abstract

Aluminum matrix composites (AMCs) are widely used in the automotive industry as engine cylinders, pistons, and brake discs. It is due to its ability that better mechanical performance and physical properties are exhibited. Recently, hypereutectic Al-Mg2Si in-situ composite with a large amount of hard Mg2Si particles has attracted considerable attention due to the beneficial features of Mg2Si particles. However, there are some limitations in the application of this composite due to its low tensile and machinability properties. Therefore, the purpose of this study was to fabricate and characterize the microstructure and tensile properties of Al/(15Mg2Si+xYSZ) hybrid composites by using an in-situ reinforcement, namely magnesium silicide (Mg2Si), and ex-situ reinforcement, yttria-stabilized zirconia (YSZ). The effect of different YSZ concentrations (i.e., 3, 6, and 9 wt. %) on the size, shape, and distribution of Mg2Si particles was analyzed accordingly. Microstructure characterization was carried out by using optical microscope (OM), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The microstructure examinations showed that with increasing YSZ concentrations, the size of primary Mg2Si particles was reduced from 74.4 μm (i.e., without YSZ) to 65.2 μm (with 9 wt. % YSZ addition). Similarly, the tensile properties were enhanced parallel to the increasing concentrations from 53.54 to 85.65 MPa with 6 wt. % of YSZ.

Item Type:Article
Uncontrolled Keywords:hybrid composite, microstructure, tensile properties
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:91740
Deposited By: Narimah Nawil
Deposited On:28 Jul 2021 16:42
Last Modified:28 Jul 2021 16:42

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