Application of computational thermodynamics for superalloys

Roger C. Reed, Atsushi Sato, T. Tao, Nils Warnken

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

An Alloys-By-Design approach has been proposed; application of it allows compositions of single crystal superalloys to be identified using modelling methods. First order estimates of important characteristics (creep resistance, oxidation resistance, castability.) are made for alloys in a chosen compositional space. From it are eliminated those compositions which do not satisfy design constraints. The methods are being applied to design various new alloy systems against minimum property targets, e.g. An oxidation resistant Re-free (low cost) castable alloy for industrial gas turbine applications. An oxidation resistant Re and Ru containing alloy, meeting specified creep life at (i) minimum density, (ii) minimum cost. Any success depends upon accuracy of underlying sub-models and databases (e.g. CALPHAD); these need to be further improved. Still many challenges: e.g. corrosion, thermal-mechanical fatigue for which quantitative models are still needed.

Original languageEnglish
Title of host publicationFundamentals of Thermodynamic Modelling of Materials
EditorsBo Sundman, Constantin Meis, Pierre-Richard Dahoo, Eric Simoni, Julian D. Gale
PublisherEDP Sciences
ISBN (Electronic)9782759806485
DOIs
Publication statusPublished - 13 May 2011
Event2010 Winter School on Fundamentals of Thermodynamic Modelling of Materials - Saclay, France
Duration: 15 Nov 201019 Nov 2010

Publication series

NameEPJ Web of Conferences
Volume14
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X

Conference

Conference2010 Winter School on Fundamentals of Thermodynamic Modelling of Materials
Country/TerritoryFrance
CitySaclay
Period15/11/1019/11/10

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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