Fracture in metallic glasses: mechanics and mechanisms

Narasimhan, R and Tandaiya, Parag and Singh, I and Narayan, RL and Ramamurty, U (2015) Fracture in metallic glasses: mechanics and mechanisms. In: INTERNATIONAL JOURNAL OF FRACTURE, 191 (1-2, S). pp. 53-75.

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Abstract

Significant progress in understanding the mechanical behavior of metallic glasses (MGs) was made over the past decade, particularly on mechanisms of plastic deformation. However, recent research thrust has been on exploring the mechanics and physics of fracture. MGs can be very brittle with K-Ic values similar to silicate glasses and ceramics or very tough with K-Ic akin to high toughness crystalline metals. Even the tough MGs can become brittle with structural relaxation following annealing at temperatures close to glass transition temperature (T-g). Detailed experimental studies coupled with complementary numerical simulations of the recent past have provided insights on the micromechanisms of failure as well as nature of crack tip fields, and established the governing fracture criteria for ductile and brittle glasses. In this paper, the above advances are reviewed and outstanding issues in the context of fracture of amorphous alloys that need to be resolved are identified.

Item Type:	Journal Article
Publication:	INTERNATIONAL JOURNAL OF FRACTURE
Publisher:	SPRINGER
Additional Information:	Copy right for this article belongs to the SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Keywords:	Metallic glasses; Crack tip fields; Vein patterns; Shear bands; Nanocorrugations; Cavitation
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	24 Apr 2015 06:03
Last Modified:	24 Apr 2015 06:03
URI:	http://eprints.iisc.ac.in/id/eprint/51390

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