Repeated crystallization in undercooled Zr{sub 41}Ti{sub 14}Cu{sub 12}Ni{sub 10}Be{sub 23} liquids
- Keck Laboratory of Engineering Materials 138-78, California Institute of Technology, Pasadena, California 91125 (United States)
- Department of Mechanical Engineering, Oregon State University, Corvallis, Oregon 97331 (United States)
Isothermal crystallization studies are performed on Zr{sub 41}Ti{sub 14}Cu{sub 12}Ni{sub 10}Be{sub 23} 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. (c) 2000 American Institute of Physics.
- OSTI ID:
- 20215998
- Journal Information:
- Applied Physics Letters, Vol. 76, Issue 17; Other Information: PBD: 24 Apr 2000; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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