Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.compositesb.2013.06.041
Title: Influence of nano-alumina and sub-micron copper on mechanical properties of magnesium alloy AZ31
Authors: Nguyen, Q.B. 
Tun, K.S. 
Lim, C.Y.H. 
Wong, W.L.E.
Gupta, M. 
Keywords: A. Metal-matrix composites (MMCs)
B. Mechanical properties
D. Fractography
E. Heat treatment
Issue Date: 2013
Source: Nguyen, Q.B., Tun, K.S., Lim, C.Y.H., Wong, W.L.E., Gupta, M. (2013). Influence of nano-alumina and sub-micron copper on mechanical properties of magnesium alloy AZ31. Composites Part B: Engineering 55 : 486-491. ScholarBank@NUS Repository. https://doi.org/10.1016/j.compositesb.2013.06.041
Abstract: Magnesium composites of AZ31-Al2O3-Cu formulations were produced using the disintegrated melt deposition technique following by hot extrusion. Microstructural characterization showed reasonable distribution of secondary phases up to 1 vol.% of copper. A tendency to form clustered agglomeration and longer shape of secondary phases was observed when the amount of copper was increased to 1.5 vol.%. Mechanical tests indicated remarkable improvements in 0.2%YS, UTS and microhardness when nano-alumina and sub-micron copper were added into AZ31. The ductility was increased up to 9.3% in the case of AZ31-1.5Al2O3-1.0Cu sample and significantly reduced (5.5%) when the amount of copper was increased to 1.5 vol.%. Heat treated sample of AZ31-1.5Al2O3-1.0Cu showed overall improvement in both tensile strength and ductility. The results suggest that the judicious selection of composition and heat treatment has the capability to enhance overall tensile response of Mg-Al2O3-Cu nanocomposites. © 2013 Elsevier Ltd. All rights reserved.
Source Title: Composites Part B: Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/85318
ISSN: 13598368
DOI: 10.1016/j.compositesb.2013.06.041
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