Metastable phase formation in rapidly quenched Zr80Pt20 alloys: Linkage to oxygen

TitleMetastable phase formation in rapidly quenched Zr80Pt20 alloys: Linkage to oxygen
Publication TypeJournal Article
Year of Publication2007
AuthorsSordelet D, Yang XY, Rozhkova E, Besser M, Kramer M
Journal TitleJournal of Non-Crystalline Solids
Volume353
Pages3439-3443
Date PublishedOct
Type of ArticleProceedings Paper
ISBN Number0022-3093
Accession NumberISI:000250235200092
Keywordsamorphous metals, CRYSTALLIZATION, diffraction and scattering measurements, melt-spun ribbons, metallic glasses, NANOCRYSTALLIZATION, phases and equilibria, processing, quasicrystals, selection, structure
Abstract

Melt spun Zr80Pt20 ribbons having oxygen contents ranging from < 200 to approximate to 5000 mass ppm are shown to form various metastable phases during quenching. In the presence of sufficient oxygen, a big cube Zr6Pt3O phase forms, but this structure is de-stabilized towards an icosahedral quasicrystalline structure at lower oxygen levels. Further reduction of oxygen promotes increasingly stable Zr-Pt bonds, and a metastable beta-Zr(Pt) structure is formed. (c) 2007 Elsevier B.V. All rights reserved.

DOI10.1016/j.jnoncrysol.2007.05.096
Alternate JournalJ. Non-Cryst. Solids