In-plane anisotropy in microstructure and mechanical behavior of Alloy 617 following high temperature aging

Kun Mo, Gianfranco Lovicu, Hsiao Ming Tung, Xiang Chen, James F. Stubbins

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

Abstract

Alloy 617 is considered as a leading material used for next generation nuclear power plant due to its good corrosion resistance and exceptional high-temperature strength. In the present work, the effects of long-term aging (up to 3000 h) at 900°C and 1000°C on the microstructure and associated mechanical properties are investigated. Specimens from the rolling plane and transverse plane were selected to study the anisotropic effect, which was originally induced by carbide inclusions from the hot rolling processing. Microstructure characterization by transmission electron microscope (TEM), scanning electron microscope (SEM) and electron backscatter diffraction (EBSD) revealed the precipitation evolution processes for different aging conditions. Precipitate type, size, location and coherency were investigated. Hardness and tensile tests showed that the influenec of the in-plane anisotropy was significant during the aging process, which may be attributed to diffusion-controlled coarsening of the precipitates.

Original languageEnglish (US)
Title of host publicationTMS 2010 - 139th Annual Meeting and Exhibition - Supplemental Proceedings
Pages491-498
Number of pages8
StatePublished - May 28 2010
Externally publishedYes
EventTMS 2010 - 139th Annual Meeting and Exhibition - Seattle, WA, United States
Duration: Feb 14 2010Feb 18 2010

Publication series

NameTMS Annual Meeting
Volume2

Other

OtherTMS 2010 - 139th Annual Meeting and Exhibition
CountryUnited States
CitySeattle, WA
Period2/14/102/18/10

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Keywords

  • Aging
  • Alloy 617
  • Anisotropy
  • EBSD
  • Microstructure
  • SEM
  • TEM

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Cite this

Mo, K., Lovicu, G., Tung, H. M., Chen, X., & Stubbins, J. F. (2010). In-plane anisotropy in microstructure and mechanical behavior of Alloy 617 following high temperature aging. In TMS 2010 - 139th Annual Meeting and Exhibition - Supplemental Proceedings (pp. 491-498). (TMS Annual Meeting; Vol. 2).