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Rheology and ultrasonic properties of Pt57.5Ni5.3Cu14.7P22.5 liquid

Harmon, John S. and Demetriou, Marios D. and Johnson, William L. (2007) Rheology and ultrasonic properties of Pt57.5Ni5.3Cu14.7P22.5 liquid. Applied Physics Letters, 90 (17). Art. No. 171923. ISSN 0003-6951. http://resolver.caltech.edu/CaltechAUTHORS:HARapl07b

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Abstract

The equilibrium and nonequilibrium viscosity and isoconfigurational shear modulus of Pt57.5Ni5.3Cu14.7P22.5 supercooled liquid are evaluated using continuous–strain-rate compression experiments and ultrasonic measurements. By means of a thermodynamically-consistent cooperative shear model, variations in viscosity with both temperature and strain rate are uniquely correlated to the variations in isoconfigurational shear modulus, which leads to an accurate prediction of the liquid fragility and to a good description of the liquid strain-rate sensitivity.


Item Type:Article
Additional Information:©2007 American Institute of Physics (Received 14 February 2007; accepted 29 March 2007; published online 26 April 2007) The authors are grateful to G. Ravichandran for providing the loading apparatus, to M.L. Lind for providing the pulse-echo overlap setup, and to J. Schroers for his advice in making the alloy. This work was supported in part by the MRSEC Program of the National Science Foundation under award No. DMR0520565.
Subject Keywords:platinum alloys; nickel alloys; copper alloys; phosphorus alloys; liquid alloys; rheology; ultrasonic effects; viscosity; shear modulus; thermodynamics
Issue or Number:17
Record Number:CaltechAUTHORS:HARapl07b
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:HARapl07b
Alternative URL:http://dx.doi.org/10.1063/1.2732822
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8441
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:13 Aug 2007
Last Modified:26 Dec 2012 09:38

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