Ideal shear strength of γ-Ni3Al and β-NiAl alloys

A.M. Iskandarov, K.A. Bukreeva, Y. Umeno, S.V. Dmitriev show affiliations and emails
Received: 27 December 2012; Accepted: 17 January 2013
This paper is written in Russian
Citation: A.M. Iskandarov, K.A. Bukreeva, Y. Umeno, S.V. Dmitriev. Ideal shear strength of γ-Ni3Al and β-NiAl alloys. Lett. Mater., 2012, 2(4) 253-256


 Theoretical strength of two intermetallic alloys γ-Ni3Al and β-NiAl was calculated at different temperatures by means of molecular dynamics simulation. At the instability point de-fect-free crystals of both alloys undergo full Burgers vector shear in case of shear in direction of full dislocation and un-dergo stacking fault formation in case of shear along partial dislocation. Critical stress reached at the instability point decreases linearly for both alloys as temperature rises. Critical strain shows only modest variation with temperature.


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