Ion irradiation enhances the mechanical performance of metallic glasses

Raghavan, R and Boopathy, K and Ghisleni, R and Pouchon, MA and Ramamurty, U and Michler, J (2010) Ion irradiation enhances the mechanical performance of metallic glasses. In: Scripta Materialia, 62 (7). pp. 462-465.

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Abstract

We demonstrate that irradiation may enhance the plasticity in metallic glasses by increasing the free-volume content via micropillar compression experiments on an ion-irradiated bulk metallic glass (BMG). Results show that irradiation decreases the flow stress and enhances the shear band formation by lowering the magnitude of stress serrations in plastic flow regime. These results highlight that amorphous alloys can mitigate the deleterious affects of severe ion irradiation as compared to their crystalline counterparts. (C) 2009 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:	Ion-beam processing; Compression test; Scanning electron microscopy (SEM); Bulk metallic glass (BMG); Shear bands
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	25 Mar 2010 11:40
Last Modified:	19 Sep 2010 05:57
URI:	http://eprints.iisc.ac.in/id/eprint/26224

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