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Structural Relaxation and Crystallization in a Pd40Cu30Ni10P20 Bulk Metallic Glass

Raghavan, R and Ramamurty, U and Basu, J and Ranganathan, S and Nishiyama, N (2003) Structural Relaxation and Crystallization in a Pd40Cu30Ni10P20 Bulk Metallic Glass. In: MRS Proceedings, 806 . MM9.6.

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Official URL: http://journals.cambridge.org/action/displayAbstra...

Abstract

The stability of a Pd40Cu30Ni10P20 bulk metallic glass (BMG) against structural relaxation is investigated by isothermal and isochronal annealing heat treatments below and above its glass transition temperature, Tg, for varying periods. Differential scanning calorimetry (DSC) of the annealed samples shows an excess endotherm at Tg, irrespective of the annealing temperature. This recovery peak evolves exponentially with annealing time and is due to the destruction of anneal-induced compositional short range ordering. The alloy exhibits a high resistance to crystallization on annealing below Tg and complex Pd- and Ni-phosphides evolve on annealing above Tg.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Cambridge University Press.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 19 Aug 2011 10:45
Last Modified: 19 Aug 2011 10:45
URI: http://eprints.iisc.ernet.in/id/eprint/39888

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