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On the variability in fracture toughness of ‘ductile’ bulk metallic glasses

Narayan, R. L. and Tandaiya, Parag and Garrett, G. R. and Demetriou, M. D. and Ramamurty, U. (2015) On the variability in fracture toughness of ‘ductile’ bulk metallic glasses. Scripta Materialia, 102 . pp. 75-78. ISSN 1359-6462.

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The mode I fracture toughness, K_(Ic), of ductile bulk metallic glasses (BMGs) exhibits a high degree of specimen-to-specimen variability. By conducting fracture experiments in modes I and II, we demonstrate that the observed high variability in mode I, vis-à-vis mode II, is a result of highly variable propensity for the conversion of shear bands into cracks in mode I whereas in mode II, crack growth direction is fixed. Thus, the measured variability in K_(Ic) is intrinsic to the nature of BMGs.

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Additional Information:© 2015 Acta Materialia Inc. Published by Elsevier Ltd. Received 4 February 2015; accepted 15 February 2015; Available online 27 February 2015.
Subject Keywords:Fracture; Toughness; Bulk metallic glass; Shear bands; Variability
Record Number:CaltechAUTHORS:20150515-100850739
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Official Citation:R.L. Narayan, Parag Tandaiya, G.R. Garrett, M.D. Demetriou, U. Ramamurty, On the variability in fracture toughness of ‘ductile’ bulk metallic glasses, Scripta Materialia, Volume 102, June 2015, Pages 75-78, ISSN 1359-6462, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57561
Deposited By: Ruth Sustaita
Deposited On:15 May 2015 17:28
Last Modified:03 Oct 2019 08:26

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