Influence of Ru on the microstructure of Ni-base single crystal superalloys

Fei Sun, Jianxin Zhang

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

7 Citations (Scopus)

Abstract

Addition of Ru in Ni-base single crystal superalloys had been used to improve the elevated temperature strength and other multiple properties. Significant decreases in stacking fault energy of the γ phase and the volume fraction of γ′ phase are observed with the addition of Ru. As well as serving as an effective solid-solution strengthening element in high refractory content Ni-base single crystal superalloys, Ru additions are able to effectively strengthen both the γ and γ′ phases and suppress the formation of TCP phases. Due to the changes in the partitioning behavior of elements and the slight decrease in the supersaturation of refractory elements in γ phase associated with Ru additions, high temperature creep resistance and the microstructural stability of the alloy are improved remarkable. The influence of Ru on the microstructure of Ni-base single crystal superalloys is reviewed.

Original languageEnglish
Title of host publicationEmerging Focus on Advanced Materials
Pages562-571
Number of pages10
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event1st International Congress on Advanced Materials 2011, AM2011 - Jinan, China
Duration: 2011 May 132011 May 16

Publication series

NameAdvanced Materials Research
Volume306-307
ISSN (Print)1022-6680

Conference

Conference1st International Congress on Advanced Materials 2011, AM2011
CountryChina
CityJinan
Period11/5/1311/5/16

Keywords

  • Microstructure
  • Ruthenium (Ru)
  • Superalloys
  • TCP phases

ASJC Scopus subject areas

  • Engineering(all)

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