Please use this identifier to cite or link to this item: https://doi.org/10.1007/s10853-005-0419-z
Title: Development of hybrid Mg/Al 2O 3 composites with improved properties using microwave assisted rapid sintering route
Authors: Wong, W.L.E. 
Karthik, S.
Gupta, M. 
Issue Date: Jul-2005
Source: Wong, W.L.E., Karthik, S., Gupta, M. (2005-07). Development of hybrid Mg/Al 2O 3 composites with improved properties using microwave assisted rapid sintering route. Journal of Materials Science 40 (13) : 3395-3402. ScholarBank@NUS Repository. https://doi.org/10.1007/s10853-005-0419-z
Abstract: In the present study, hybrid magnesium based composites reinforced with an equivalent of 5 vol.% of micron and nano-sized Al 2O 3 particulates were synthesized using powder metallurgy technique incorporating an innovative microwave assisted rapid sintering technique. Microstructural characterization revealed near equiaxed grain morphology and the presence of minimal porosity in all the samples. Mechanical characterization studies revealed that the coupled addition of micron and nano-sized particulate reinforcements in magnesium matrix leads to a significant increase in hardness, elastic modulus, 0.2% yield strength, ultimate tensile strength and a decrease in ductility when compared to pure magnesium. Tensile testing results further revealed an increase in elastic modulus and ductility with no apparent change in the 0.2% yield strength and ultimate tensile strength of the hybrid composites upon the addition of nano-sized alumina particulates from 0.5 to 0.75 volume percent. With an increase in nano-sized alumina particulates from 0.75 to 1%, the overall mechanical properties of the hybrid composites were enhanced with an increase being observed in the elastic modulus, 0.2% yield strength and ductility of the composites. An attempt is made in this study to investigate the feasibility of the processing methodology and to study the effects of the addition of particulate reinforcements of different sizes on the microstructure, physical and mechanical properties of magnesium. © 2005 Springer Science + Business Media, Inc.
Source Title: Journal of Materials Science
URI: http://scholarbank.nus.edu.sg/handle/10635/84989
ISSN: 00222461
DOI: 10.1007/s10853-005-0419-z
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

39
checked on Apr 3, 2018

WEB OF SCIENCETM
Citations

26
checked on Apr 3, 2018

Page view(s)

19
checked on Mar 12, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.