Processing of Mg-3.2 Al-2.4 Zn Alloy Matrix In-situ Composites by Reactive Infiltration Technique
American Journal of Mechanical and Materials Engineering
Volume 2, Issue 2, June 2018, Pages: 21-27
Received: Jun. 12, 2018; Accepted: Jul. 11, 2018; Published: Aug. 7, 2018
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Authors
Mohammad Tusar Ali, Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh
Kazi Mohammad Shorowordi, Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh
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Abstract
Mg alloy matrix composites having a combination of their indispensable and superior properties have drawn an attention for various implementations especially in automotive and aerospace industries. Mg in-situ composites were synthesized using Mg-3.2Al-2.4Zn alloy ingot, coarse Ti and B4C powder. Ti and B4C powders were mixed in a plastic bottle with zirconia balls in Ar atmosphere by ball milling. The resulting mixture of these powders was compacted into a cylindrical preform which was infiltrated by Mg-3.2Al-2.4Zn alloy under capillary force. The infiltration of the preform was performed in an electric resistance furnace at the temperatures of 800°C and 900°C for different holding time in Ar atmosphere. The microstructure of the in-situ composites was investigated with a field emission scanning electron microscope (FESEM) equipped with Energy Dispersive X-ray (EDX). The formation of phases in the in-situ composites during processing was identified using XRD with Cu Kα radiation. SEM revealed different phases in the in-situ composites. It was found in XRD pattern that TiC TiB2, TiB, MgB2, MgB4, B13C2 and Ti2AlC compounds were formed during infiltration of Mg-3.2 Al-2.4 Zn alloy matrix in the composites. The effect of processing parameters on bulk density and Brinell hardness was also discussed.
Keywords
M. Kulekci. Magnesium and its alloys applications in automotive industry, The International Journal of Advanced Manufacturing Technology, Vol. 39, No. 9, 2008, pp. 851-865.%%%%%Metin Onal, Mehmet Gavgali. Production of Metal Matrix Composites by In-situ Techniques, Journal of Scientific and Engineering Research, 2017, 4(2):78-82.%%%%%Zhaoxuan Wu & W. A. Curtin, The origins of high hardening and low ductility in magnesium, International Journal of Science, Nature volume 526, pages 62–67 (01 Octob
To cite this article
Mohammad Tusar Ali, Kazi Mohammad Shorowordi, Processing of Mg-3.2 Al-2.4 Zn Alloy Matrix In-situ Composites by Reactive Infiltration Technique, American Journal of Mechanical and Materials Engineering. Vol. 2, No. 2, 2018, pp. 21-27. doi: 10.11648/j.ajmme.20180202.12
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This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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