Demetriou, Marios D. and Floyd, Michael and Crewdson, Chase and Schramm, Joseph P. and Garrett, Glenn and Johnson, William L. (2011) Liquid-like platinum-rich glasses. Scripta Materialia, 65 (9). pp. 799-802. ISSN 1359-6462 http://resolver.caltech.edu/CaltechAUTHORS:20111108-131440517
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Bulk platinum-rich glasses exhibiting high bulk moduli and Poisson ratios are introduced. A bulk modulus of 217 GPa and a Poisson’s ratio of 0.43 are measured, the highest values reported to date for a metallic glass. The present glasses demonstrate an unusual capacity for “liquid-like” deformation characterized by low resistance to shear flow and high resistance to cavitation, enabling extensive bending ductility in the absence of fracture. An indirect estimate of the fracture toughness yields a value of ∼125 MPa m^(1/2).
|Additional Information:||© 2011 Acta Materialia Inc. Published by Elsevier Ltd. Received 28 June 2011; revised 18 July 2011; Accepted 20 July 2011. Available online 26 July 2011. This work was supported in part by the MRSEC Program of the National Science Foundation under Award Number DMR-0520565. The authors are grateful to the PX Group and Dr. Andreas Blatter for supplying high-purity platinum for the alloy development work.|
|Subject Keywords:||Amorphous metal; Bulk metallic glass; Precious metals; Jewelry|
|Official Citation:||Marios D. Demetriou, Michael Floyd, Chase Crewdson, Joseph P. Schramm, Glenn Garrett, William L. Johnson, Liquid-like platinum-rich glasses, Scripta Materialia, Volume 65, Issue 9, November 2011, Pages 799-802, ISSN 1359-6462, 10.1016/j.scriptamat.2011.07.035. (http://www.sciencedirect.com/science/article/pii/S1359646211004349)|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||08 Nov 2011 22:04|
|Last Modified:||08 Nov 2011 22:04|
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