MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Sintering Properties of Ti–6Al–4V Alloys Prepared Using Ti/TiH2 Powders
J.-M. OhK.-H. HeoW.-B. KimG.-S. ChoiJ.-W. Lim
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2013 Volume 54 Issue 1 Pages 119-121

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Abstract

Ti–6Al–4V alloy specimens were prepared by sintering Ti/TiH2 powders with pre-alloyed TiAl and Al–V powders. Changes in the sintered density, Vickers hardness, and phase structure of the Ti–6Al–4V (Ti6Al4V) and hydrogenated Ti–6Al–4V (H-Ti6Al4V) alloys as a function of the vacuum sintering temperature (700–1,300°C) were investigated. The sintered density and Vickers hardness of the Ti6Al4V and the H-Ti6Al4V alloys increased as the sintering temperature increased, while the concentration of oxygen considerably decreased with increasing sintering temperature. The oxygen concentration of the H-Ti6Al4V alloy was lower than that of the Ti6Al4V alloy. The sintered density and Vickers hardness values of the Ti6Al4V and H-Ti6Al4V alloys were almost the same. These results suggest that the preparation of Ti6Al4V alloy using TiH2 powder is more cost-effective and produces sintered products with lower oxygen concentrations.

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© 2012 The Japan Institute of Metals and Materials
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