Superplasticity in intermetallic NiAl nanowires via atomistic simulations

VK Sutrakar and DR Mahapatra, MATERIALS LETTERS, 64, 879-881 (2010).

DOI: 10.1016/j.matlet.2010.01.050

A novel superplastic deformation in an intermetallic B2-NiAl nanowire of cross-sectional dimensions of similar to 20 angstrom with failure strain as high as similar to 700% at 700 K temperature is reported. The minimum temperature under which the superplasticity has been observed is around 0.36 T-m, which is much lower than 0.5 T-m (T-m = melting temperature i.e. 1911 K for bulk B2-NiAl). Superplasticity is observed due to transformation from crystalline phase to amorphous phase after yielding of the nanowire. (C) 2010 Elsevier B.V. All rights reserved.

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