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Journal of Nanomaterials
Volume 2011, Article ID 642980, 9 pages
http://dx.doi.org/10.1155/2011/642980
Research Article

Adding TiC Nanoparticles to Magnesium Alloy ZK60A for Strength/Ductility Enhancement

1Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576
2Singapore Technologies Kinetics Ltd. (ST Kinetics), 249 Jalan Boon Lay, Singapore 619523

Received 10 March 2011; Accepted 29 June 2011

Academic Editor: Theodorian Borca-Tasciuc

Copyright © 2011 Muralidharan Paramsothy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

ZK60A nanocomposite containing TiC nanoparticles was fabricated using solidification processing followed by hot extrusion. The ZK60A nanocomposite exhibited similar grain size to monolithic ZK60A and significantly reduced presence of intermetallic phase, reasonable TiC nanoparticle distribution, nondominant (0 0 0 2) texture in the longitudinal direction, and 16% lower hardness than monolithic ZK60A. Compared to monolithic ZK60A (in tension), the ZK60A nanocomposite simultaneously exhibited higher 0.2% TYS, UTS, failure strain, and work of fracture (WOF) (+13%, +15%, +76%, and +106%, resp.). Also, compared to monolithic ZK60A (in compression), the ZK60A nanocomposite exhibited lower 0.2% CYS (−17%) and higher UCS, failure strain, and WOF (+11%, +29%, and +34%, resp.). The beneficial effect of adding TiC nanoparticles on the enhanced tensile and compressive response of ZK60A is investigated in this paper.