Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.compstruct.2004.10.008
Title: Effect of type of primary processing on the microstructure, CTE and mechanical properties of magnesium/alumina nanocomposites
Authors: Hassan, S.F.
Gupta, M. 
Keywords: Ductility
Magnesium
Microstructure
Nano-particulates
Tensile properties
Issue Date: Jan-2006
Citation: Hassan, S.F., Gupta, M. (2006-01). Effect of type of primary processing on the microstructure, CTE and mechanical properties of magnesium/alumina nanocomposites. Composite Structures 72 (1) : 19-26. ScholarBank@NUS Repository. https://doi.org/10.1016/j.compstruct.2004.10.008
Abstract: Magnesium based composites containing 2.5 wt.% of nano-sized Al2O3 (50 nm) particulates reinforcement were synthesized using an innovative disintegrated melt deposition technique and blend-press-sinter powder metallurgy technique followed by hot extrusion. Microstructural characterization of the materials revealed uniform distribution of reinforcement, grain refinement and the presence of minimal porosity. Properties characterization revealed that the presence of nano-Al2O3 particulates led to an increase in dimensional stability, hardness, elastic modulus, 0.2% yield strength, UTS and ductility of pure magnesium. Amongst the composites, the ingot metallurgy processed material exhibited superior modulus and ductility while powder metallurgy processed material exhibited superior yield strength and ultimate tensile strength. The results further revealed that the overall combination of tensile properties of these materials remained superior when compared to high strength magnesium alloy AZ91 reinforced with much higher weight percentage of SiC. Fractography studies revealed that the typical brittle fracture of pure magnesium changed to ductile due to the incorporation of nano-Al2O3 particulates. An attempt is made in the present study to correlate the effect of nano-sized Al2 O3 particulates as reinforcement and processing type with the microstructural and tensile properties of magnesium. © 2004 Elsevier Ltd. All rights reserved.
Source Title: Composite Structures
URI: http://scholarbank.nus.edu.sg/handle/10635/85070
ISSN: 02638223
DOI: 10.1016/j.compstruct.2004.10.008
Appears in Collections:Staff Publications

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

SCOPUSTM   
Citations

53
checked on May 20, 2018

WEB OF SCIENCETM
Citations

44
checked on Apr 24, 2018

Page view(s)

29
checked on Apr 20, 2018

Google ScholarTM

Check

Altmetric


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