Xu, Donghua and Wirth, Brian D. and Schroers, Jan and Johnson, William L. (2010) Calculating glass-forming ability in absence of key kinetic and thermodynamic parameters. Applied Physics Letters, 97 (2). Art. No. 024102. ISSN 0003-6951 http://resolver.caltech.edu/CaltechAUTHORS:20100805-101324225
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Glass-forming ability (GFA) as defined by a critical cooling rate R_c to vitrify a liquid upon solidification is a complex function of many parameters. Some of the parameters, such as liquid-crystal interfacial energy, temperature-dependent liquid viscosity, and influence of heterogeneities, are crucial but their accurate experimental determination is challenging. Here, instead of relying on the experimental data, we draw random values for the difficult parameters and use the classical theory to examine probabilistic distributions of Rc for two well-known metallic glasses. Direct random parameterization produces extremely broad distributions spanning tens of orders of magnitude. Dramatically sharpened distributions are obtained around experimental R_c upon guiding the random parameterization with limited calorimetric data. The results suggest that it is plausible to determine GFA even in absence of data for crucial parameters.
|Additional Information:||© 2010 American Institute of Physics. Received 9 March 2010; accepted 17 June 2010; published online 12 July 2010. We thank J. F. Loffler for providing part of the original calorimetric data referenced in this work.|
|Subject Keywords:||annealing; gadolinium compounds; nanostructured materials; nanotechnology; plasma materials processing; random-access storage|
|Classification Code:||PACS: 05.70.Np; 61.30.-v; 66.20.-d; 81.30.Fb|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||05 Aug 2010 17:21|
|Last Modified:||26 Dec 2012 12:17|
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