Effect of surface recrystallization on the creep rupture property of a single- crystal superalloy

Bing Zhang, Changkui Liu, Xin Lu, Chunhu Tao, Tao Jiang

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The effect of surface recrystamization by heating after shot-peening on the creep rupture property and fracture behavior of a single-crystal superalloy was investigated. The results show that the creep rupture property of the single-crystal superalloy was greatly influenced by surface recrystamization. A recrystallized surface layer with a depth of 101 μm resulted in a decrease in creep rupture life by nearly 50%, and an almost linear reduction of creep rupture life was observed with the increase of recrystallization depth. A lower strength of the recrystallized layer, inhomogeneous deformation between the recrystallized layer and the matrix, and stress concentration caused by notch effect resulted in the decrease in creep rupture life of the single-crystal superalloy.

Original languageEnglish
Pages (from-to)413-416
Number of pages4
JournalRare Metals
Volume29
Issue number4
DOIs
Publication statusPublished - 2010 Aug 1
Externally publishedYes

Keywords

  • Creep rupture
  • Recrystamization
  • Shot peening
  • Single crystal superalloy

ASJC Scopus subject areas

  • Materials Chemistry
  • Metals and Alloys
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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