Figueroa, I.A., Carroll, P.A., Davies, H.A. et al. (2 more authors) (2007) Preparation of Cu-based bulk metallic glasses by suction casting. In: Jones, H., (ed.) SP07 Proceedings of the 5th Decennial International Conference on Solidification Processing. Department of Engineering Materials, University of Sheffield. , Sheffield , pp. 479-482. ISBN ISBN-13: 978-0-9522507-4-6
Abstract
A series of Cu-Hf-Ti alloys prepared by rapid solidification of the melt and by copper mould casting were studied in the present work. Alloy ingots were prepared by arc-melting mixtures of pure metals in an argon atmosphere. An indication of the cooling rate obtained was determined using an Al-4.5 wt%Cu alloy. Cooling rates varied from 540 K/s for the centre section of a 4 mm die to 885 K/s for the outside wall section of the 2 mm die. The glass-forming ability, structure and thermal stability of Cu-Hf-Ti glassy alloys were studied by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and differential thermal analysis (DTA). Bulk glass formation was observed for the Cu64Hf36, Cu55Hf25Ti20 and Cu56Hf25Ti19 alloys, with critical diameters dc for a fully glassy structure of 1, 4 and 5 mm, respectively. The substitution of Hf by Ti increased the glassforming ability (GFA) and the thermal stability.
Metadata
Item Type: | Book Section |
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Authors/Creators: |
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Editors: |
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Copyright, Publisher and Additional Information: | Copyright © 2007 Howard Jones on behalf of the named authors. |
Keywords: | rapid solidification, X-ray diffraction, thermal analysis, bulk metallic glasses |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Repository Officer |
Date Deposited: | 21 Aug 2007 17:12 |
Last Modified: | 08 Feb 2013 16:54 |
Status: | Published |
Publisher: | Department of Engineering Materials, University of Sheffield. |
Refereed: | Yes |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:2641 |