An Engineered Magnesium Alloy Nanocomposite: Mechanisms Governing Microstructural Development and Mechanical Properties
A magnesium alloy-based nanocomposite [Mg-1.8Y-0.4Ce/1.53ZnO] was developed using the technique of disintegrated melt deposition (DMD) followed by hot extrusion. In this paper, an attempt is made to systematically present and elegantly discuss the conjoint influence of yttrium, cerium and zinc oxide additions to pure magnesium. The developed nanocomposite revealed a combination of superior microstructure and mechanical properties (microhardness, strength and ductility). The microscopic mechanisms governing both strength and ductility of the engineered nanocomposite were examined through carefully conducted study of microstructure using an optical microscope, scanning electron microscope, and x-ray diffraction (XRD) texture analysis. Microstructure-mechanical property correlation studies were performed with the prime objective of understanding and rationalizing the microscopic mechanisms governing mechanical behavior.
KeywordsMagnesium alloy nanocomposite Extrusion Microstructure, strength Ductility
Sravya Tekumalla expresses gratitude to the National University of Singapore (NUS) for supporting her graduate study through a NUS research scholarship. The authors gratefully acknowledge the Ministry of Education Academic Research Funding for financial support [WBS# R-265-000-498-112] of this innovative and inspiring research study.
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