Title
Synthesis, Characterisation And Mechanical Properties Of Sic Reinforced Al Based Nanocomposites Processed By Ma And Sps
Keywords
Aluminium alloys; Hardness; Mechanical alloying; Microstructure; Silicon carbide; Spark plasma sintering
Abstract
Al based alloys reinforced with different amounts (5, 12 and 20 wt-%) of nanosized SiC particulates were synthesised by mechanical alloying and consolidated by the spark plasma sintering (SPS) technique. The distribution of the reinforcement phase in the composite was evaluated as a function of the milling time and the amount of SiC. The processed materials were characterised by scanning electron microscopy and energy dispersive spectroscopy for the morphology and composition and X-ray diffraction. Continuous reduction in crystallite size was observed as milling progressed and after milling for 20 h the resulting powders reached a grain size of <100 nm. These Al-SiC composites were successfully consolidated by the SPS method at different sintering temperatures of 400, 450 and 500°C. It is suggested that a higher hardness can be achieved even at 20 wt-%SiC when a higher sintering temperature, for example, above 500°C, is used. © 2013 Institute of Materials, Minerals and Mining.
Publication Date
4-1-2013
Publication Title
Powder Metallurgy
Volume
56
Issue
2
Number of Pages
149-157
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1179/1743290112Y.0000000029
Copyright Status
Unknown
Socpus ID
84877877023 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84877877023
STARS Citation
Al-Aqeeli, N.; Abdullahi, K.; Hakeem, A. S.; Suryanarayana, C.; and Laoui, T., "Synthesis, Characterisation And Mechanical Properties Of Sic Reinforced Al Based Nanocomposites Processed By Ma And Sps" (2013). Scopus Export 2010-2014. 6798.
https://stars.library.ucf.edu/scopus2010/6798