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Theoretical Modeling of Thermodynamic and Mechanical Properties of the Pure Components of Ti and Zr Based Alloys Using the Exact Muffin-Tin Orbitals Method
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, The Institute of Technology.
Russian Academic Science, Russia .
National University of Science and Technology MISiS, Russia .
Russian Academic Science, Russia National Research Tomsk State University, Russia .
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2014 (English)In: Russian Physics Journal, ISSN 1064-8887, E-ISSN 1573-9228, Vol. 56, no 9, 1030-1038 p.Article in journal (Refereed) Published
Abstract [en]

The exact muffin-tin orbitals (EMTO) method belongs to the third and latest generation of first-principles methods of calculating the electronic structure of materials in the so-called approximation of muffin-tin (MT) orbitals within the framework of the density functional theory. A study has been performed of its applicability for modeling the thermodynamic and mechanical properties of the pure components of Ti and Zr based alloys. The total energies of Ti, Zr, Nb, V, Mo, and Al are calculated in three crystal structures - face-centered cubic (FCC), body-centered cubic (BCC), and hexagonal close-packed (HCP). For all of these elements and crystal structures, we have calculated the theoretical values of the lattice constants, elastic constants, and equations of state. The stable crystal structures have been determined. In all cases, calculations by the EMTO method predict the correct structure of the ground state. For stable structures we compared the obtained results with experiment and with calculations using full potential methods. We have demonstrated the reliability of the EMTO method and conclude that its further application for effective modeling of the properties of disordered alloys based on Ti and Zr is possible.

Place, publisher, year, edition, pages
Springer Verlag (Germany) , 2014. Vol. 56, no 9, 1030-1038 p.
Keyword [en]
first-principles calculation of electronic structure; stability of crystal structure; elastic constants; Ti, Zr, Nb, V, Mo, and Al
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-105042DOI: 10.1007/s11182-014-0136-7ISI: 000330622100009OAI: diva2:703369
Available from: 2014-03-06 Created: 2014-03-06 Last updated: 2014-03-25

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Abrikosov, Igor
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