Ductile-Brittle Behavior along Crack Front and T-Stress

Abstract:

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We present new results of molecular dynamic (MD) simulations in 3D bcc iron crystals with embedded central through crack (001)[110] of Griffith type loaded in mode I. Two different sample geometries of the same crystallographic orientation were tested with negative and positive values of the T-stress, which change the ductile-brittle behavior along the crack front in 3D. This phenomenon is explained in the framework of stress analysis, both on the continuum and atomistic level.

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Periodical:

Edited by:

Pavel Šandera

Pages:

69-72

DOI:

10.4028/www.scientific.net/KEM.465.69

Citation:

A. Uhnáková et al., "Ductile-Brittle Behavior along Crack Front and T-Stress", Key Engineering Materials, Vol. 465, pp. 69-72, 2011

Online since:

January 2011

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$35.00

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