Please use this identifier to cite or link to this item: https://doi.org/10.1179/174328405X51758
Title: Development of high performance Mg-Al 2O 3 composites containing Al 2O 3 in submicron length scale using microwave assisted rapid sintering
Authors: Wong, W.L.E. 
Karthik, S.
Gupta, M. 
Keywords: Mechanical properties
Metal matrix composites
Microstructure
Microwave sintering
Powder metallurgy
Issue Date: Sep-2005
Citation: Wong, W.L.E., Karthik, S., Gupta, M. (2005-09). Development of high performance Mg-Al 2O 3 composites containing Al 2O 3 in submicron length scale using microwave assisted rapid sintering. Materials Science and Technology 21 (9) : 1063-1070. ScholarBank@NUS Repository. https://doi.org/10.1179/174328405X51758
Abstract: In the present study, magnesium composites reinforced with different volume fraction of submicron size Al 2O 3 particulates were synthesised using powder metallurgy technique incorporating an innovative microwave assisted rapid sintering technique. The sintered materials were subsequently hot extruded for characterisation in terms of microstructural, physical and mechanical properties. Microstructural characterisation results revealed a reasonably uniform distribution of Al 2O 3 particulates, minimal porosity and good matrix reinforcement interfacial integrity. The average coefficient of thermal expansion (CTE) value for Mg-Al 2O 3 composites was found to decrease with increasing amount of submicron Al 2O 3 particulates. Mechanical characterisation of the composites revealed an increase in hardness, elastic modulus, 0-2% YS and ultimate tensile strength (UTS) with the increase in amount of alumina particulates. Ductility exhibited the reverse trend. An attempt is made in the present study to correlate the effect of the presence of submicron alumina and its increasing amount with the microstructural, physical and mechanical properties of magnesium. © 2005 Institute of Materials, Minerals and Mining.
Source Title: Materials Science and Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/84988
ISSN: 02670836
DOI: 10.1179/174328405X51758
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 Nov 13, 2018

WEB OF SCIENCETM
Citations

33
checked on Oct 22, 2018

Page view(s)

32
checked on Nov 2, 2018

Google ScholarTM

Check

Altmetric


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