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

Fei Sun, Jian Xin Zhang

Research output: Contribution to journalReview articlepeer-review

6 Citations (Scopus)

Abstract

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

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalCailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
Volume32
Issue number10
Publication statusPublished - 2011 Oct 1
Externally publishedYes

Keywords

  • Microstructure
  • Ruthenium(Ru)
  • Superalloy
  • TCP Phases

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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