Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-26T07:16:00.267Z Has data issue: false hasContentIssue false
  • English
  • Français

The Temperature Dependence of Grain Boundary Segregation in B-Doped Ni3Ai Bicrystals

Published online by Cambridge University Press:  01 January 1992

Ursula Otterbein ,
Siegfried Hofmann  and
Manfred Rühle
Ursula Otterbein
Affiliation:
Max-Planck-lnstitut für Metallforschung, Institut für Werkstoffwissenschaft, Seestr. 92, D-7000 Stuttgart 1, Germany.
Siegfried Hofmann
Affiliation:
Max-Planck-lnstitut für Metallforschung, Institut für Werkstoffwissenschaft, Seestr. 92, D-7000 Stuttgart 1, Germany.
Manfred Rühle
Affiliation:
Max-Planck-lnstitut für Metallforschung, Institut für Werkstoffwissenschaft, Seestr. 92, D-7000 Stuttgart 1, Germany.
Get access

Abstract

Equilibrium grain boundary segregation at symmetrical <110> tilt grain boundaries of Ni3AI bicrystals containing 0.17 at% B and traces of S has been studied by Auger electron spectroscopy and compared directly to surface segregation by applying a special specimen geometry. From the experimentally determined interfacial concentrations after annealing at different temperatures, segregation free energies for B and S at both types of interfaces have been determined using the Langmuir-McLean equation. The effect of B and S segregation on the grain boundary cohesive energy has been calculated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 183
Copyright
Copyright © Materials Research Society 1995

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

REFERENCES

1 Liu, C. T., White, C. L. and Horton, J.A., Acta metall. 33, 213 (1985)Google Scholar
2 Briant, C. L. and Taub, A. I., Acta metall. 36, 2761 (1988)Google Scholar
3 George, E. P., Liu, C. T. and Padgett, R. A., Scripta Metall. 23, 979 (1989)Google Scholar
4 Krzanowski, J. E., Scripta Metall. 23, 1219 (1989)Google Scholar
5 Mills, M. J., Scripta Metall. 23, 2061 (1989)Google Scholar
6 Baker, I. and Schulson, E. M., Scripta Metall. 23, 1883 (1989)Google Scholar
7 Kung, H., Rasmussen, D. R. and Sass, S. L., MSC Report #7035Google Scholar
8 Hofmann, S., in Surface Segregation Phenomena, edited by Dowben, P. A. & Miller, A. (CRC Press, Boca Raton, 1990), p. 107 Google Scholar
9 White, C. L., Defect and Diffusion Forum 59, 47 (1988)Google Scholar
10 Smith, J. R. and Cianciolo, T. V., Surf. Sci. 210, L229 (1989)Google Scholar
11 Rice, J. R. and Wang, J.-S., Mat. Sci. & Eng. A107, 23 (1989)Google Scholar
12 McLean, D., Grain Boundaries in Metals (Clarendon Press, Oxford 1957)Google Scholar
13 Muschik, T., Hofmann, S. and Gust, W., Scripta Metall. 22, 349 (1988)Google Scholar
14 Seah, M. P. and Dench, W., Surf. Interf. Anal. 1, 2 (1979)Google Scholar
15 Hasson, G. C. and Goux, C., Scripta Metall. 5, 889 (1971)Google Scholar
16 Chen, S. P., Voter, A. F., Albers, R. C., Boring, A. M. and Hay, P. J., Scripta Metall. 23, 217 (1989)Google Scholar
17 Guttmann, M. and McLean, D., in Interfacial Segregation, edited by Johnson, W. C. and Blakely, J. M. (American Society for Metals, Ohio, 1977), p. 261–348 Google Scholar