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.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
B. A. Cooke, A. R. Jones andB. Ralph,Metall. Sci. 13 (1979) 179.
V. A. Phillips,Trans. AIME 239 (1967) 1955.
H. Kreye, E. Hornbogen andF. Haessner,Phys. Stat. Solidi (a) 1 (1970) 97.
F. Haessner, E. Hornbogen andN. Mukherjee,Z. Metall. 57 (1966) 171.
J. M. Oblak andW. A. Owczarski,Trans. AIME 242 (1968) 1563.
J. V. Bee, A. R. Jones andP. R. Howell,J. Mater. Sci. 15 (1980) 337.
L. Winberg andN. Dahlen,J. Mater. Sci. 13 (1978) 2365.
N. Dahlen andL. Winberg,Acta Metallogr. 28 (1980) 41.
J. V. Bee, A. R. Jones andP. R. Howell,J. Mater. Sci. 16 (1981) in press.
R. L. Cairns, L. R. Curwick andJ. S. Benjamin,Metal Trans. A 6A (1975) 179.
J. S. Benjamin andM. J. Bomford,Met. Trans. A 5 (1974) 615.
C. J. Burton, S. Baranow andJ. K. Tien,ibid. 10A (1979) 1297.
B. Ralph, C. Y. Barlow, B. A. Cooke andA. J. Porter, Proceedings of the Risø International Symposium on Recrystallization (Risø National Laboratory, Rostilde, 1980) p. 229.
Henry Wiggin and Co. Ltd, Publication 3563 (1971).
M. Hillert andG. R. Purdy,Acta Metallogr. 26 (1978) 333.
K. Smidoda, G. Gottschalk andH. Gleiter,Metal. Sci. 13 (1979) 146.
A. J. Porter andB. Ralph, Proceedings of the Risø International Symposium on Recrystallization (Risø National Laboratory, Rostilde, 1980) p. 147.
J. C. M. Li,J. Appl. Phys. 33 (1962) 2958.
A. R. Jones, Proceedings of the ASM Seminar on “Grain Boundaries — Structure and Kinetics” (in press).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Porter, A., Ralph, B. The recrystallization of nickel-base superalloys. J Mater Sci 16, 707–713 (1981). https://doi.org/10.1007/BF02402788
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02402788