Wall, J. J. and Liu, C. T. and Rhim, W. K. and Li, J. J. Z. and Liaw, P. K. and Choo, H. and Johnson, W. L. (2008) Heterogeneous nucleation in a glass-forming alloy. Applied Physics Letters, 92 (24). Art. No. 244106. ISSN 0003-6951. doi:10.1063/1.2948861. https://resolver.caltech.edu/CaltechAUTHORS:WALapl08
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Abstract
Nucleation in the undercooled liquid state in the bulk metallic glass-forming composition Zr52.5Cu17.9Ni14.6Al10Ti5 (VIT-105), produced using high purity (PA) and commercial purity (CA) raw materials was investigated using electrostatic levitation and ex situ neutron diffraction. The CA material was observed to have a lower density than the PA sample and crystallized at relatively shallow undercooling. The densities of the samples at temperatures above the solidus showed an oxygen-dependent hysteresis associated with the state change, indicating the presence of oxygen-stabilized intermetallics. The PA alloy exhibited three distinct crystallization modes dependent on the thermal history of the melt, one of which showed a net volume expansion.
| Item Type: | Article | ||||||
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| Additional Information: | © 2008 American Institute of Physics. Received 6 May 2008; accepted 30 May 2008; published 20 June 2008. | ||||||
| Subject Keywords: | aluminum alloys, copper alloys, crystallization, liquid alloys, metallic glasses, neutron diffraction, nickel alloys, titanium alloys, undercooling, vitrification, zirconium alloys | ||||||
| Issue or Number: | 24 | ||||||
| DOI: | 10.1063/1.2948861 | ||||||
| Record Number: | CaltechAUTHORS:WALapl08 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:WALapl08 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 10952 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Archive Administrator | ||||||
| Deposited On: | 20 Jun 2008 | ||||||
| Last Modified: | 08 Nov 2021 21:12 |
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