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Ideal Tensile Strength of Ni3Al and Fe3Al with D03 Structure

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Abstract:

The ideal tensile strength along the [111] direction in the Fe3Al and Ni3Al intermetallic compounds with the D03 structure has been calculated from the first principles using the fullpotential linearized augmented plane-wave method (FP LAPW) within the density functional theory (DFT). The strains corresponding to the maximum sustainable stresses in both materials were determined and compared. The behavior of atomic magnetic moments as a function of strain was analyzed. The tensile test simulations have been theoretically simulated employing both the local density approximation (LDA) and generalized gradient approximation (GGA) for the exchangecorrelation potential.

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Periodical:

Materials Science Forum (Volumes 567-568)

Pages:

77-80

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.567-568.77

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Online since:

December 2007

Authors:

Dominik Legut, Mojmír Šob

Keywords:

Displacive Phase Transformations, DO3 Structure, Ideal Tensile Strength, Intermetallic, Magnetism

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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References

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