Consolidation of Blended Titanium/Magnesium Powders by Microwave Processing

Author:

Imam M. Ashraf1,Bruce Ralph W.2,Feng Jerry2,Fliflet Arne W.2

Affiliation:

1. U.S. Naval Research Laboratory

2. Vanderbilt University

Abstract

Mg-Ti alloys are attractive for structural applications because of low density and improved corrosion resistance by selective oxidation including hydrogen storage and switchable mirror applications. Titanium has a melting point (1670°C) that greatly exceeds the boiling point of magnesium (1090°C) and therefore, alloying of Mg and Ti by conventional methods is extremely difficult. Secondly, the solubility of Ti in liquid Mg is very low and it is difficult to extend solubility by rapid solidification. Physical vapor deposition by electron beam deposition and magnetron co-sputtering has been used to extend the solubility of Ti in Mg. Mechanical alloying and anvil-cell processing at extreme temperatures and pressures have also used to enforce alloying of Mg with Ti. The present paper deals with the consolidation of blended magnesium-titanium powders by microwave heating, an approach that appears highly cost effective.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Reference28 articles.

1. F. H. Froes, Mater. Sci. Eng. A 117 (1989) 19.

2. D. L. Douglas, in Proc. Int. Symp. On Hydrides for Energy Storage, edited by A. F. Andersen and A. J. Maeland (Pergamon, Oxford, (1978) p.151.

3. P. Selvam, B. Viswanathan, C. S. Swamy and V. Srinivasan, Int. J. Hydrogen Energy 11 (1986) 169.

4. F. Hehmann and H. Jones, Magnesium Technology, compiled by C. Baker, G. W. Lorimer and W. Unsworth (Institute of Metals, London) p.83).

5. M. A. Imam, F. H. Froes and K. L. Housley. Titanium and Titanium Alloys. Kirk-Othmer Encyclopedia of Chemical Technology (2010) 1-41.

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