Hostname: page-component-8448b6f56d-t5pn6 Total loading time: 0 Render date: 2024-04-23T13:42:23.169Z Has data issue: false hasContentIssue false
  • English
  • Français

Atom Probe Analysis of the Compositions of γ′ AND γ″ Intermetallic Phases in Nickel-Based Superalloy 718

Published online by Cambridge University Press:  28 February 2011

M. K. Miller  and
M. G. Burke
M. K. Miller
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6376
M. G. Burke
Affiliation:
Westinghouse Science and Technology Center, Pittsburgh, PA 15235
Get access

Abstract

An atom probe field ion microscopy and transmission electron microscopy characterization has been performed on the intragranular precipitates that are formed in a niobium-modified nickel-base superalloy 718 after the various stages of a multistage heat treatment. Atom probe results indicate that there is a wide variation in the compositions of the DO22-ordered γ″, the Ll2-ordered γ′ precipitates and the γ matrix with heat treatment and with position in the microstructure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 186: Symposium I – Alloy Phase Stability and Design , 1990 , 223
Copyright
Copyright © Materials Research Society 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Miller, M.K. and Smith, G.D.W., Atom Probe Microanalysis: Principles and Applications to Materials Problems Materials Research Society, Pittsburgh, 1989.Google Scholar
2. Burke, M.G. and Miller, M.K., J. de Physique, 50–C8, 395 (1989).Google Scholar
3. Brown, E.E. and Muzyka, D.R., in Superalloys II, edited by Sims, C.T., Stoloff, N.S. and Hagel, W.C. (J. Wiley and Sons, New York, 1987)Google Scholar
4. Brooks, J.W. and Bridges, P.J., in High Temperature Alloys for Gas Turbines and other Applications, edited by Betz, W., Brunetaud, R., Fischmeister, D. Coutsouradism H., Gibbons, T.B., Kvernes, I., Lindblom, Y., Marriott, J.B., and Meadowcroft, D.B., (D. Reidel Publishing Co., 1987).Google Scholar
5. Burke, M.G. and Miller, M.K., these proceedings.Google Scholar
6. Miller, M.K., J. de Physique, 47–C7, 493 (1986).Google Scholar
7. Carlson, R.G. and Radavich, J.F., in Superalloy 718 - Metallurgy and Applications, edited by Loria, E.A., The Minerals, Metals & Materials Society, 1989.Google Scholar