Hostname: page-component-6bf8c574d5-rwnhh Total loading time: 0 Render date: 2025-02-19T03:42:31.972Z Has data issue: false hasContentIssue false
  • English
  • Français

Interfacial Segregation in Bicrystals: A Database for Grain Boundary Design of Polycrystals

Published online by Cambridge University Press:  10 February 2011

Pavel Lejček
Pavel Lejček*
Affiliation:
Institute of Physics, Academy of Sciences, Na Slovance 2, 180 40 Praha 8, Czech Republic
Get access

Abstract

Physical meaning of thermodynamic parameters of segregation obtained from measurements of chemical composition of grain boundaries in poly crystals and bi crystals, and calculated for individual grain boundary sites is discussed. It is shown that the mean values of these parameters determined from the measurements on polycrystals can in exceptional cases represent the behavior of general grain boundaries. On the other hand, measurements of grain boundary segregation at individual grain boundaries can provide the values of segregation enthalpies and entropies representing behavior of a specific single grain boundary site. The latter data are appropriate for the use in the grain boundary design concept.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 458: Symposium W – Interfacial Engineering for Optimized Properties , 1996 , 321
Copyright
Copyright © Materials Research Society 1997

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. Watanabe, T., Mater. Sci. Eng. A 166, 11 (1993).Google Scholar
2. Lejček, P. and Hofmann, S., Crit. Rev. Sol. State Mater. Sci. 20, 1 (1995).Google Scholar
3. Guttmann, M. and McLean, D., in Interfacial Segregation, edited by Johnson, W.C. and Blakely, J.M. (ASM, Metals Park, OH, 1979), p. 261.Google Scholar
4. Lejček, P., Mater. Sci. Eng. A 185, 109 (1994).Google Scholar
5. Lejček, P., Anal. Chim. Acta. 297, 165 (1994).Google Scholar
6. Erhart, H. and Grabke, H.J., Metal Sci. 15, 401 (1981).Google Scholar
7. Guttmann, M., Dumoulin, P. and Wayman, M., Metall. Trans. 13A, 1693 (1982).Google Scholar
8. Tatsumi, K., Okumura, N. and Funaki, S., Trans. JIM, Suppl. 27, 427 (1986).Google Scholar
9. White, C.L. and Stein, D.F., Metall. Trans. 9A, 13 (1978).Google Scholar
10. Menyhard, M., Yan, M. and Vitek, V., Acta Metall. Mater. 42, 2783 (1994).Google Scholar
11. Masuda-Jindo, K., phys. stat. sol. (b) 134, 545 (1986).Google Scholar