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Damage Tolerant Magnesium Metal Matrix Composites: Influence of Reinforcement and Processing

Jayalakshmi, S and Kailas, SV and Seshan, S and Kumar, K and Srivatsan, TS (2005) Damage Tolerant Magnesium Metal Matrix Composites: Influence of Reinforcement and Processing. In: Materials and Manufacturing Processes, 20 (5). pp. 747-760.

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A growing impetus to enhance our understanding of the behavior of magnesium-based alloys for use in weight critical applications resulted as a consequence of the low density of magnesium. In an attempt to enhance the applicability of magnesium for a wide spectrum of performance-critical applications, the addition of reinforcement to the alloy was considered as an economically affordable and potentially viable scientific alternative. In this paper are reported the results of a study aimed at understanding the influence of saffil alumina short fiber reinforcement on microstructural development of a squeeze-cast magnesium alloy. Preliminary results confirm promise of the reinforced alloy, which retains hardness, strength, and stiffness better at elevated temperatures compared to the unreinforced counterpart.However, impact strength and toughness of the reinforced alloy are inferior. The importance of the matrix alloy in governing the overall mechanical response of the composite microstructure is discussed based on fractographic observations. The importance of volume fraction of there inforcing phase on properties of the composite microstructure is highlighted.

Item Type: Journal Article
Publication: Materials and Manufacturing Processes
Publisher: Taylor & Francis Inc
Additional Information: Copyright for this article belongs to Taylor & Francis Inc.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 25 Oct 2005
Last Modified: 27 Aug 2008 11:31
URI: http://eprints.iisc.ac.in/id/eprint/3899

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