alexa Melt Infiltration Casting of Alumina Silicon Carbide and Boron Carbide Reinforced Aluminum Matrix Composites | OMICS International | Abstract
ISSN: 2169-0022

Journal of Material Sciences & Engineering
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Research Article

Melt Infiltration Casting of Alumina Silicon Carbide and Boron Carbide Reinforced Aluminum Matrix Composites

Ali Kalkanlı1*, Tayfun Durmaz1, Ayşe Kalemtaş2 and Gursoy Arslan3

1Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara, Turkey

2Department of Metallurgical and Materials Engineering, Bursa Technical University, Turkey

3Materials Science and Engineering, Anadolu University, Eskişehir, Turkey

*Corresponding Author:
Ali Kalkanli
Department of Metallurgical and Materials Engineering
Middle East Technical University
Ankara, Turkey
Tel: +90 (312) 210-5929
E-mail: [email protected]

Received date: July 07, 2017; Accepted date: July 20, 2017; Published date: July 30, 2017

Citation: Kalkanlı A, Durmaz T, Kalemtaş A, Arslan G (2017) Melt Infiltration Casting of Alumina Silicon Carbide and Boron Carbide Reinforced Aluminum Matrix Composites. J Material Sci Eng 6: 357. doi: 10.4172/2169-0022.1000357

Copyright: © 2017 Kalkanlı A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

This paper discuss the effect of processing details such as particle size, sintering temperature, preform preparation, aluminum alloy characteristics and melt temperature on the final mechanical properties of ceramic phase reinforced metal matrix composites. Since alloy composition was determined as 7075 and 7085 optimum solutionizing and ageing temperatures were studied to determine maximum hardness values. For only 7085 alloy best solutionizing temperature is 465°C and for 7075 alloy the maximum hardness achived as 178 BHN after heat treatment at 475°C. Alloys were heat treated for recystallization after hot rolling grain size were measured as 100-120 μm for 7085 alloy matrix. Various sintering temperatures were used for preform preparation such as 1300-1450°C. In 85% Al2O3 reinforced 7085 Alloy based MMCs preforms sintered at 1450°C high hardness values were achieved as 545 BHN. Intermetallic phase was determined in 7075 and 7085 alloys selected as alloy matrix. Al2Cu intermetallic pecipitate (θ phase) was determined as dominant second phase after T6 heat treatment but highly expected phase in 7000 series alloys MgZn2 (η phase) was not determined by XRD and SEM analysis techniques due to ultrafine precipitate size and homogeneous distribution.

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