Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 484, Issue 1-2, Pages 400-404Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.04.117
Keywords
Metal matrix composites; Nanostructured materials; MgO/A356 composites
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In this research, aluminum alloy (A356.1) matrix composites reinforced with 1.5, 2.5 and 5 vol% nano-particle MgO were fabricated via stir casting method. Fabrication was performed at various casting temperatures, viz. 800,850 and 950 degrees C. Optimum amount of reinforcement and casting temperature were determined by evaluating the density, microstructure and mechanical properties of composites. The composites were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Hardness and compression tests were carried out in order to identify mechanical properties. The results reveal that the composites containing 1.5 vol% reinforcement particle fabricated at 850 degrees C have homogenous microstructure as well as improved mechanical properties. (C) 2009 Elsevier B.V. All rights reserved.
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