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Effect of high-energy ball milling on mechanical properties of the Mg–Nb composites fabricated through powder metallurgy process

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journal contribution
posted on 2018-03-01, 00:00 authored by Alireza VahidAlireza Vahid, Peter HodgsonPeter Hodgson, Yuncang Li
New biocompatible and biodegradable Mg–Nb composites used as bone implant materials are fabricated through powder metallurgy process. Mg–Nb mixture powders are prepared through mechanical milling and manual mixing. Then, the Mg–Nb composites are fabricated through cold press and sintering processes. The effect of mechanical milling and Nb particles as reinforcements on the microstructures and mechanical properties of Mg–Nb composites are investigated. The mechanical milling process is found to be effective in reducing the size of Mg and Nb particles, distributing the Nb particles uniformly in the Mg matrix and obtaining Mg–Nb composite particles. The Mg–Nb composite particles can be bound together firmly during the sintering process, result in Mg–Nb composite structures with no intermetallic formation, lower porosity, and higher mechanical properties compared to composites prepared through manual mixing. Interestingly, the mechanical properties of manually mixed Mg–Nb composites appear to be even lower than that of pure Mg.

History

Journal

Advanced Engineering Materials

Volume

20

Issue

3

Publisher

Wiley - V C H Verlag GmbH & Co. KGaA

Location

Weinheim, Germany

ISSN

1438-1656

eISSN

1527-2648

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2017, Wiley - V C H Verlag GmbH & Co. KGaA