Influence of alumina percentage on hot deformation of aluminium–alumina matrix composite. (February 2015)

• Record Type: Journal Article
• Authors: Samiee, A.; Meratian, M.
• Is Part Of: International journal of cast metals research. Volume 28:Number 1(2015)
• Page Start: 47
• Page End: 49
• Publication Date: 2015-02
• Subjects: Metal castings -- Periodicals; Founding -- Periodicals; Foundry research -- Periodicals; Foundry chemistry -- Periodicals; 671.2
• DOI: 10.1179/1743133614Y.0000000129
• Languages: English
• ISSNs: 1364-0461

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>Aluminium–alumina Al–Al₂O₃ metal matrix composites were fabricated using the powder metallurgy techniques and <italic>ex situ</italic> casting. Different reinforcement volume fractions were used, that is, 0, 6, 10 and 18 vol.-% Al₂O₃. The effect of percentage of alumina particles was investigated through hot tensile deformation conducted at 773 K temperature. Scanning electron microscopy was used to study the microstructure of the produced composite. The tensile strength of the Al–Al₂O₃ was found to improve as a function of reinforcement volume fraction. With the exception of Al–18 vol.-%Al₂O₃, the metal matrix composite showed better strength and behaviour at high temperature of the test than the unreinforced matrix.</p> </abstract>