MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Microstructure and Damping Capacity of Mg2Si/Mg–Al–Si–(Bi) Composites
Joong-Hwan Jun
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2012 Volume 53 Issue 11 Pages 2064-2066

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Abstract

Influences of Bi addition on microstructures and damping capacities of Mg2Si/Mg–Al–Si–(Bi) composites have been investigated. The Bi addition is beneficial to modify Mg2Si phase from coarse Chinese script shape to fine polygonal shape. Even though the Bi-containing alloy has modified polygonal Mg2Si compounds, its damping capacity shows similar level with that of the Bi-free alloy. This would be attributed to the increased solute concentration related to high solubility of Bi in Mg, which eventually offsets the damping increment in response to Mg2Si modification.

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© 2012 The Japan Institute of Metals and Materials
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