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Ab initio calculations of elastic properties of Ru1-xNixAl superalloys
Moscow State Institute Steel & Alloys.
Moscow State Institute Steel & Alloys.
Moscow State Institute Steel & Alloys.
Royal Institute Technology.
Vise andre og tillknytning
2009 (engelsk)Inngår i: APPLIED PHYSICS LETTERS, ISSN 0003-6951, Vol. 94, nr 16, s. 161901-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Ab initio total energy calculations based on the exact muffin-tin orbitals method, combined with the coherent potential approximation, have been used to study the thermodynamical and elastic properties of substitutional refractory Ru1-xNixAl alloys. We have found that the elastic constants C- and C-11 exhibit pronounced peculiarities near the concentration of about 40 at. % Ni, which we ascribe to electronic topological transitions. Our suggestion is supported by the Fermi surface calculations in the whole concentration range. Results of our calculations show that one can design Ru-Ni-Al alloys substituting Ru by Ni (up to 40 at. %) with almost invariable elastic constants and reduced density.

sted, utgiver, år, opplag, sider
2009. Vol. 94, nr 16, s. 161901-
Emneord [en]
ab initio calculations, aluminium alloys, elastic constants, Fermi surface, nickel alloys, refractories, ruthenium alloys, superalloys
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-18570DOI: 10.1063/1.3120543OAI: oai:DiVA.org:liu-18570DiVA, id: diva2:220605
Merknad
Original Publication: I D Bleskov, E A Smirnova, Yu Kh Vekilov, P A Korzhavyi, B Johansson, M Katsnelson, L Vitos, Igor Abrikosov and Eyvas Isaev, Ab initio calculations of elastic properties of Ru1-xNixAl superalloys, 2009, APPLIED PHYSICS LETTERS, (94), 16, 161901. http://dx.doi.org/10.1063/1.3120543 Copyright: American Institute of Physics http://www.aip.org/ Tilgjengelig fra: 2009-07-03 Laget: 2009-06-01 Sist oppdatert: 2011-02-24bibliografisk kontrollert

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