liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Ab initio Calculations of Elastic Constants of Superalloys
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics . Linköping University, The Institute of Technology.
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 (English)In: JAPANESE JOURNAL OF APPLIED PHYSICS, ISSN 0021-4922, Vol. 50, no 5Article in journal (Refereed) 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.

Place, publisher, year, edition, pages
Japan Society of Applied Physics / Japanese Journal of Applied Physics; 1999 , 2011. Vol. 50, no 5
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-68814DOI: 10.1143/JJAP.50.05FE01ISI: 000290789000040OAI: oai:DiVA.org:liu-68814DiVA: diva2:421238
Available from: 2011-06-08 Created: 2011-06-08 Last updated: 2011-06-13

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Isaev, Eyvas

Search in DiVA

By author/editor
Isaev, Eyvas
By organisation
Theoretical Physics The Institute of Technology
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 44 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf