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

Yoo, Byung-Gil ; Kim, Kyu-Sik ; Oh, Jun-Hak ; Ramamurty, U. ; Jang, Jae-il (2010) Room temperature creep in amorphous alloys: influence of initial strain and free volume Scripta Materialia, 63 (12). pp. 1205-1208. ISSN 1359-6462

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.scriptamat.2010.08.034

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.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Metallic Glasses; Creep; Nanoindentation; Free Volume
ID Code:62546
Deposited On:22 Sep 2011 03:16
Last Modified:22 Sep 2011 03:16

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