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- Article name
- Investigation of the chemical composition influence on Ni-base superalloys properties by means of the electronic theory methods
- Authors
- RAZYMOVSKIY V. I., , razumovskiy@yahoo.com, JSC Kompozit, Korolev, Moscow region, Russia
BERESNEV A. G., , info@kompozit-mv.ru, JSC Kompozit, Korolev, Moscow region, Russia
RAZYMOVSKII I. M., , razumovskii@yahoo.com, JSC Kompozit, Korolev, Moscow region, Russia
BUTRIM V. N., , info@kompozit-mv.ru, Institute of Nova Metallurgical Technology JSC Komposit, Korolev, Moscow region, Russia
LOGACHEVA A. I., , info@kompozit-mv.ru, Institute of Nova Metallurgical Technology JSC Komposit, Korolev, Moscow region, Russia
- Keywords
- ab initio calculations / Ni-base superalloys / grain boundaries
- Year
- 2011 Issue 4 Pages 71 - 76
- Code EDN
- Code DOI
- Abstract
- A new approach to the choice of Ni-based polycrystalline superalloys is proposed. It is based on a concept that under given structural conditions the strength characteristics of superalloys are mainly determined by interatomic bonding given by the cohesive energy in the bulk and by interatomic bonding given by the mechanical strength of the grain boundary. On the basis of calculations authors classify Hf and Zr as minor alloying additions which make a positive impact on the atoms bond strength in the bulk and in the grain boundaries.
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