liu.seSearch for publications in DiVA
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Ab initio Calculations of Elastic Constants of Superalloys
Linköpings universitet, Institutionen för fysik, kemi och biologi, Teoretisk Fysik. Linköpings universitet, Tekniska högskolan.
Department of Theoretical Physics and Quantum Technologies, National University of Science and Technology ‘‘MISA’’, Moscow, Russia.
Department of Theoretical Physics and Quantum Technologies, National University of Science and Technology ‘‘MISA’’, Moscow, Russia.
Department of Theoretical Physics and Quantum Technologies, National University of Science and Technology ‘‘MISA’’, Moscow, Russia.
2011 (engelsk)Inngår i: JAPANESE JOURNAL OF APPLIED PHYSICS, ISSN 0021-4922, Vol. 50, nr 5Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Using the-state-of-the-art ab initio method we have studied elastic constants of alloys potentially interesting for high temperature applications. We have shown that Cr substitutes the Al sublattice in B2 NiAl at concentration up to 40 at. %, but at higher Cr content it prefers the Ni-sublattice. Alloying of NiAl with Cr yields reduced strength but improves the ductility of the alloys. Alloying of NiAl with W which substitutes the Al sublattice, leads to a strong decrease of the shear modulus, and near 50 at.% of W the alloy becomes mechanically unstable as elastic constant C is negative. This is in agreement with our phonon calculations where we found soft modes along the [110] direction for B2 NiW. According to our calculations in (Ru,Ni)Al alloys the shear modulus is almost constant up to 40 at.% of Ni, at higher Ni concentrations it is drastically reduced. We have shown that the changes in elastic properties of (Ru-X)Al alloys are due to electronic topological transitions.

sted, utgiver, år, opplag, sider
Japan Society of Applied Physics / Japanese Journal of Applied Physics; 1999 , 2011. Vol. 50, nr 5
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-68814DOI: 10.1143/JJAP.50.05FE01ISI: 000290789000040OAI: oai:DiVA.org:liu-68814DiVA, id: diva2:421238
Tilgjengelig fra: 2011-06-08 Laget: 2011-06-08 Sist oppdatert: 2011-06-13

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekst

Person

Isaev, Eyvas

Søk i DiVA

Av forfatter/redaktør
Isaev, Eyvas
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 70 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf