Room temperature creep in amorphous alloys: Influence of initial strain and free volume

Yoo, Byung-Gil and Kim, Kyu-Sik and Oh, Jun-Hak and Ramamurty, U and Jang, Jae-il (2010) Room temperature creep in amorphous alloys: Influence of initial strain and free volume. In: Scripta Materialia, 63 (12). pp. 1205-1208.

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Abstract

The role of imposed strain on the room temperature time-dependent deformation behavior of bulk metallic glasses (BMGs) was systematically investigated through spherical nanoindentation creep experiments. The results show that creep occurred even at very low strains within elastic regimes and, interestingly, a precipitous increase in creep rate was found in plastic regimes, with BMG that had a higher free volume exhibiting greater creep rates. The results are discussed in terms of prevailing mechanisms of elastic/plastic deformation of amorphous alloys. (c) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	Scripta Materialia
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Metallic glasses; Creep; Nanoindentation; Free volume
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	29 Nov 2010 11:15
Last Modified:	29 Nov 2010 11:15
URI:	http://eprints.iisc.ac.in/id/eprint/34065

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