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Phase transformations in the rapidly solidified Ti40Zr20Hf20Pd20 alloy

Chen, N and Yao, Kefu and Louzguine-Luzgin, DV and Qiu, Shengbao and Ranganathan, S and Inoue, A (2007) Phase transformations in the rapidly solidified Ti40Zr20Hf20Pd20 alloy. In: Scripta Materialia, 57 (7). pp. 631-634.

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Official URL: http://dx.doi.org/10.1016/j.scriptamat.2007.06.002

Abstract

We report that an approximant phase was initially obtained in amorphous Ti40Zr20Hf20Pd20 alloy. In the initial stage of the devitrification process, the approximant phase transforms into an icosahedral (1) phase with a high thermal stability while the cF96 Zr2Ni-type (space group Fd (3) over barm with a = 1.25 nm and 96 atoms cell(-1)) particles precipitate from the amorphous matrix. Eventually the I phase grows to several hundred nanometers when annealed at about 1000 K and then transforms into the Zr2Ni-type phase with an endothermic reaction. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 11 Jun 2010 07:03
Last Modified: 19 Sep 2010 05:59
URI: http://eprints.iisc.ernet.in/id/eprint/26809

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