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Effect of Processing on Mechanically Alloyed and Spark Plasma Sintered Al-Al2O3 Nanocomposites
Joint Authors
Saheb, Nouari
Hakeem, Abbas Saeed
Shahzeb Khan, Muhammad
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-11-05
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Metal matrix nanocomposites are advanced materials developed using ceramic nanoreinforcements and nanocrystalline metal matrices.
These composites have outstanding properties and high potential for large number of functional and structural applications.
In this work, nanocrystalline aluminium and Al-Al2O3 nanocomposites were synthesised using mechanical alloying and consolidated through spark plasma sintering technique.
Scanning electron microscopy, X-ray diffraction, and mapping were used to characterize the powders and sintered samples.
Density and hardness of sintered samples were measured using densimeter and hardness tester, respectively.
It was found that milling of pure aluminium for 24 h reduced its crystallite size to less than 100 nm.
For Al-Al2O3 nanocomposites, milling for 24 h decreased the crystallite size of the aluminium phase and resulted in uniform dispersion of the reinforcement.
Sintering of the synthesised powders led to grain growth.
Al2O3 contributed to growth inhibition when samples were sintered for 20 minutes and improved the hardness but reduced densification.
The Al-10 vol.% Al2O3 nanocomposite had the highest Vickers hardness value of 1460 MPa.
American Psychological Association (APA)
Saheb, Nouari& Shahzeb Khan, Muhammad& Hakeem, Abbas Saeed. 2015. Effect of Processing on Mechanically Alloyed and Spark Plasma Sintered Al-Al2O3 Nanocomposites. Journal of Nanomaterials،Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1069174
Modern Language Association (MLA)
Saheb, Nouari…[et al.]. Effect of Processing on Mechanically Alloyed and Spark Plasma Sintered Al-Al2O3 Nanocomposites. Journal of Nanomaterials No. 2015 (2015), pp.1-13.
https://search.emarefa.net/detail/BIM-1069174
American Medical Association (AMA)
Saheb, Nouari& Shahzeb Khan, Muhammad& Hakeem, Abbas Saeed. Effect of Processing on Mechanically Alloyed and Spark Plasma Sintered Al-Al2O3 Nanocomposites. Journal of Nanomaterials. 2015. Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1069174
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1069174