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Journal of Materials Science

, Volume 16, Issue 3, pp 707–713 | Cite as

The recrystallization of nickel-base superalloys

  • A. Porter
  • B. Ralph
Papers

Abstract

The effects of recrystallization on the γ′ distribution in four nickel-base superalloys of varying γ′ volume fraction (Nimonics PE16, 80A and 115, and Udimet 720) have been studied by transmission electron microscopy. These effects are explained in terms of high solubility and diffusivity in the recrystallization interface, and it is suggested that high diffusivity assumes greater importance as the amount of solute dissolved in the boundary increases. Some attention is given to the nucleation of recrystallization. It is shown that in one of the alloys (Udimet 720), nucleation at grain boundaries involves subgrain coalescence. Subsequent growth of the nucleus occurs by strain-induced boundary migration.

Keywords

Polymer Microscopy Electron Microscopy Migration Transmission Electron Microscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd 1981

Authors and Affiliations

  • A. Porter
    • 1
  • B. Ralph
    • 1
  1. 1.Department of Metallurgy and Materials ScienceUniversity of CambridgeCambridgeUK

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