Evolution of microstructure in a nickel-based superalloy as a function of ageing time

E-Wen Huang*, Yun Liu, Yang Ren, Lionel Porcar, Ji Jung Kai, Peter K. Liaw, Gregory S. Smith, Wei Ren Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

An experimental investigation, combining synchrotron X-ray powder diffraction, small-angle neutron scattering and transmission electron microscopy, has been undertaken to study the microstructure of nanoprecipitates in a nickel-based superalloy. Upon increasing the ageing time during a heat-treatment process, the average size of the precipitates first decreases before changing to a monotonically growth stage. Possible reasons for this observed structural evolution, which is predicted thermodynamically, are suggested.

Original languageEnglish
Pages (from-to)483-490
Number of pages8
JournalPhilosophical Magazine Letters
Volume91
Issue number7
DOIs
StatePublished - 1 Jul 2011

Keywords

  • ageing
  • nickel alloys
  • precipitation
  • small-angle neutron scattering
  • synchrotron radiation

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