The role of casting temperature in preparation of bulk metallic glasses
Paper
Paper/Presentation Title | The role of casting temperature in preparation of bulk metallic glasses |
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Presentation Type | Paper |
Authors | |
Author | Wang, Hao |
Editors | Chandra, T., Wanderka, N., Reimers, W. and Ionescu, M. |
Journal or Proceedings Title | Materials Science Forum, v. 638-642 |
Journal Citation | 884 (638-642), pp. 1671-1676 |
Number of Pages | 6 |
Year | 2010 |
Place of Publication | Switzerland |
ISBN | 9780878492947 |
Digital Object Identifier (DOI) | https://doi.org/10.4028/www.scientific.net/MSF.638-642.1671 |
Web Address (URL) of Paper | http://www.scientific.net/MSF.638-642.1671 |
Conference/Event | 6th International Conference on Processing and Manufacturing of Advanced Materials (THERMEC 2009): Processing, Fabrication, Properties, Applications |
Event Details | 6th International Conference on Processing and Manufacturing of Advanced Materials (THERMEC 2009): Processing, Fabrication, Properties, Applications Event Date 25 to end of 29 Aug 2009 Event Location Berlin, Germany |
Abstract | In the past research on bulk metallic glasses (BMGs) has been concentrated on searching for alloy composition to obtain high glass forming ability. Very few studies are on the effect of processing condition on glass forming ability of BMGs. In this study, we have prepared CuZr-based BMGs at different casting temperatures. Increasing casting temperature increases glass forming ability and decreases the amount of the crystalline phase during BMG solidification. At a high casting temperature 1723 K, fully amorphous sample is obtained at a size of 2 mm in diameter. While under the lower casting temperatures (1523 K and 1323 K), crystalline CuZr phases exist. The formation of the crystalline phase is attributed to the initial crystals or cluster survived in the BMG melt during ingot remelting. The study indicates that casting temperature can be used as the controlling parameter to produce purely amorphous materials or crystalline CuZr-phase reinforced BMG composites, and the mechanical properties and thermal stability of the BMG composites can be tailored by the amount of the crystalline phase existed in the materials. |
Keywords | alloy composition; casting; BMG matrix composites; bulk metallic glass; casting temperature; glass forming ability |
ANZSRC Field of Research 2020 | 401606. Glass |
401607. Metals and alloy materials | |
340211. Transition metal chemistry | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Department of Mechanical and Mechatronic Engineering |
https://research.usq.edu.au/item/9zy86/the-role-of-casting-temperature-in-preparation-of-bulk-metallic-glasses
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