Simulation of the Electric Current Flow in Amorphous-Crystalline Ti2NiCu Alloy with Shape Memory Effect

Dmitriy S. Kuchin; Victor Koledov; Pavel V. Bogun; Peter V. Lega; Vedamanickam Sampath; Vladimir G. Shavrov

doi:10.4028/www.scientific.net/MSF.845.146

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HomeMaterials Science ForumMaterials Science Forum Vol. 845Simulation of the Electric Current Flow in...

Simulation of the Electric Current Flow in Amorphous-Crystalline Ti₂NiCu Alloy with Shape Memory Effect

Abstract:

A new technique for the production of nanograined alloys from rapidly quenched amorphous ribbons by serial electric pulses has been proposed recently [1]. The present work involves a theoretical study of electric current flow in a nonhomogeneous Ti₂NiCu alloy consisting of an amorphous matrix with a crystalline phase of spherical morphology embedded in it. The electric current density distribution was calculated in the vicinity of a spherical nucleus, which has an electrical resistance that is only 0.4 times that of the amorphous matrix. The calculation of Joule heat density was done in the nucleus and in the amorphous volume surrounding it. It was shown that during the current pulse the Joule heat evolution in nucleus exceeds one in equatorial region in matrix, but less than near the poles. The dependence of relative resistivity of nonhomogeneous amorphous-crystalline alloy on volume fraction of spherical crystalline nuclei was calculated

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Periodical:

Materials Science Forum (Volume 845)

Pages:

146-149

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.845.146

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Online since:

March 2016

Authors:

Dmitriy S. Kuchin*, Victor Koledov, Pavel V. Bogun, Peter V. Lega, Vedamanickam Sampath, Vladimir G. Shavrov

Keywords:

Amorphous-Crystalline Composite, Nanograined Alloys, Shape Memory Effect

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References

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