Advanced supersolvus nickel powder disk alloy DOE: Chemistry, properties, phase formations and thermal stability

Andrew Powell, Ken Bain, Andrew Wessman, Daniel Wei, Timothy Hanlon, David Mourer

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

14 Scopus citations

Abstract

GE Aviation under the US Air Force Hybrid Disk Contract (FA8650-10-C-5225) investigated a powder nickel alloy design space in search of an alloy composition to increase the state of the art temperature capability for rotating disk applications to 1450 oF (788 °C). The eleven alloy Design of Experiments (DOE) explored the relationship between chemistry and mechanical properties (creep, tensile, ductility, dwell LCF, cyclic fatigue crack growth & static fatigue crack growth) as well as identified key attributes around gamma prime precipitation temperatures, phase stability and long term exposures and stability of gamma prime. Regression analysis of the data obtained indicates that increasing W and decreasing Cr and Ti are desirable for improved high temperature strength and creep capability.

Original languageEnglish (US)
Title of host publicationSUPERALLOYS 2016 - Proceedings of the 13th International Symposium on Superalloys
EditorsMark Hardy, Eric Huron, Uwe Glatzel, Brian Griffin, Beth Lewis, Cathie Rae, Venkat Seetharaman, Sammy Tin
PublisherMinerals, Metals and Materials Society
Pages189-197
Number of pages9
ISBN (Electronic)9781118996669
DOIs
StatePublished - 2016
Externally publishedYes
Event13th International Symposium on Superalloys, SUPERALLOYS 2016 - Seven Springs, United States
Duration: Sep 11 2016Sep 15 2016

Publication series

NameProceedings of the International Symposium on Superalloys
Volume2016-January

Conference

Conference13th International Symposium on Superalloys, SUPERALLOYS 2016
Country/TerritoryUnited States
CitySeven Springs
Period9/11/169/15/16

Keywords

  • Alloy development
  • Chemistry
  • Disk alloy design
  • Phase stability
  • Powder metallurgy
  • Superalloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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