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Repeated crystallization in undercooled Zr41Ti14Cu12Ni10Be23 liquids

Schroers, Jan and Johnson, William L. and Busch, Ralf (2000) Repeated crystallization in undercooled Zr41Ti14Cu12Ni10Be23 liquids. Applied Physics Letters, 76 (17). pp. 2343-2345. ISSN 0003-6951. http://resolver.caltech.edu/CaltechAUTHORS:SCHRapl00a

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Abstract

Isothermal crystallization studies are performed on Zr41Ti14Cu12Ni10Be23 melts. Undercooling experiments are carried out repeatedly at 907, 860, and 750 K. The scattering of the time to reach the onset of crystallization is investigated. Results from experiments performed at 907 K show a large scatter of the onset time of crystallization. For the experiments carried out at 860 and 750 K, scattering of the onset time is two orders of magnitude smaller. These results indicate that, at high temperatures, the crystallization is governed by the time scale of the statistical nucleation events. At low temperatures, the crystallization is controlled by diffusion, resulting in a well-defined onset time for crystallization.


Item Type:Article
Additional Information:©2000 American Institute of Physics. (Received 15 December 1999; accepted 25 February 2000) This work was supported by the National Aeronautics and Space Administration (Grant No. NCC8-119) and the Department of Energy (Grant No. DEFG-03086ER45242). The authors thank Pierre Desré for fruitful discussion.
Subject Keywords:ZIRCONIUM ALLOYS; TITANIUM ALLOYS; COPPER ALLOYS; NICKEL ALLOYS; BERYLLIUM ALLOYS; CRYSTALLIZATION; ISOTHERMS; NUCLEATION; DIFFUSION; METALLIC GLASSES; undercooling; crystallisation; crystal growth from melt; liquid alloys
Issue or Number:17
Record Number:CaltechAUTHORS:SCHRapl00a
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:SCHRapl00a
Alternative URL:http://dx.doi.org/10.1063/1.126340
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8536
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:17 Aug 2007
Last Modified:26 Dec 2012 09:39

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