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New Pt-based Superalloy System Designed from First Principles

Published online by Cambridge University Press:  21 September 2018

Vsevolod I. Razumovskiy ,
Eyvaz I. Isaev ,
Andrei V. Ruban  and
Pavel A. Korzhavyi
Vsevolod I. Razumovskiy
Affiliation:
Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden Department of Theoretical Physics, Moscow Institute of Steel and Alloys, 119049 Moscow, Russia
Eyvaz I. Isaev
Affiliation:
Department of Theoretical Physics, Moscow Institute of Steel and Alloys, 119049 Moscow, Russia Condensed Matter Theory Group, Department of Physics, Uppsala University, Box 530, SE- 751 21 Uppsala, Sweden Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
Andrei V. Ruban
Affiliation:
Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
Pavel A. Korzhavyi
Affiliation:
Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
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Abstract

Pt-Sc alloys with the γ-γ′ microstructure are proposed as a basis for a new generation of Pt-based superalloys for ultrahigh-temperature applications. This alloy system was identified on the basis of first-principles calculations. Here we discuss the prospects of the Pt-Sc alloy system on the basis of calculated elastic properties, phonon spectra, and defect formation energies.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1128: Symposium U – Advanced Intermetallic-Based Alloys for Extreme Environment and Energy Applications , 2008 , 1128-U05-28
Copyright
Copyright © Materials Research Society 2009

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