MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Preparation and Characterization of Dual-Phase Bulk Metallic Glasses through Powder Metallurgy Route
Pee-Yew LeeSung-Ting ChungChung-Kwei LinWen-Ta TsaiHong-Ming Lin
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2007 Volume 48 Issue 7 Pages 1595-1599

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Abstract

In the present study, amorphous Mg49Y15Cu36 and Ti50Cu28Ni15Sn7 alloy powders were synthesized separately by using a mechanical alloying technique. The dual-phase (Mg49Y15Cu36)100−x(Ti50Cu28Ni15Sn7)x (x=0, 10, 20, 30, 40, and 50 vol%) powders were prepared by mixing the corresponding amorphous powders. The amorphous dual-phase powders were then consolidated into bulk metallic glass (BMG) discs. The amorphization status of as-prepared powders and BMG discs was confirmed by X-ray diffraction and by using a differential scanning calorimeter. The microstructure of the BMG discs showed that the Ti50Cu28Ni15Sn7 phase is distributed homogeneously within the Mg49Y15Cu36 matrix. The (Mg49Y15Cu36)50(Ti50Cu28Ni15Sn7)50 BMG disc exhibited a relative density of 97.2% and its Vickers microhardness was 526±20 kg/mm2.

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© 2007 The Japan Institute of Metals and Materials
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