Microstructural study in a Fe-Ni-base superalloy during creep-rupture at intermediate temperature

Jingbo Yan, Yuefeng Gu, Fei Sun, Yuyama Michinari, Zhihong Zhong, Yong Yuan, Jintao Lu

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Creep-rupture behavior of a Fe-Ni-base alloy crept under various conditions has been studied using Electron Backscatter Diffraction (EBSD) and Transmission electron microscopy (TEM). The results indicate that grain orientation did not change after the alloy crept at 700. °C/300. MPa and changed greatly crept at 700. °C/200. MPa. The recrystallization texture near rupture-fracture surface was observed after the alloy crept at 750. °C/150. MPa. A better creep performance was found in the samples with the occurrence of grain rotation dependence of the microstructure and the grain store energy.

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalMaterials Science and Engineering A
Volume639
DOIs
Publication statusPublished - 2015 Jul 5
Externally publishedYes

Keywords

  • Creep
  • Grain boundary
  • Recrystallization
  • Superalloy
  • Texture

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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