Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-25T17:44:12.764Z Has data issue: false hasContentIssue false
  • English
  • Français

Study of Point Defects in Intermetallic Compound Ni3Al

Published online by Cambridge University Press:  01 January 1992

Dongliang Lin (T.L. Lin)  and
Jian Sun
Dongliang Lin (T.L. Lin)
Affiliation:
Department of Materials Science and Engineering, Shanghai JiaoTong University, Shanghai 200030, P. R. China
Jian Sun
Affiliation:
Department of Materials Science and Engineering, Shanghai JiaoTong University, Shanghai 200030, P. R. China
Get access

Abstract

Formation energies of point defects in Ni3Al were calculated by EAM and static relaxations. The equilibrium equation of point defects in Ll2 type of intermetallic compounds was established. The concentration of point defects at 1000 K as a function of bulk composition and the effect of temperature on them was calculated for Ni3Al. The concentration of vacancies in Ni3Al with various Al and boron contents was also investigated by means of positron annihilation to verify the calculated results.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 251
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. Aoki, K. and Izumi, O., Nippon Kinzoku Gakkaishi 43, 1190 (1979).Google Scholar
2. Liu, C T., White, C L., and Horton, J. A., Acta Metall. 33, 213 (1985).Google Scholar
3. Dasgupta, A., Smedskjaer, L.C., Legnini, D.G., and Siegel, R.W., Mater. Lett. 3, 457 (1985).Google Scholar
4. Voter, A.F. and Chen, S.P., in High Temperature Ordered Intermetallic Alloys, edited by Koch, C.C, Liu, C.T. and Stoloff, N.S (Mater. Res. Soc. 39, Pittsburgh, PA, 1985) pp. 175 Google Scholar
5. Lin, T.L. and Chen, Da, Journal De Physique, collogue C-l, 227 (1990).Google Scholar
6. Caro, A., Victoria, M., and Averback, R.S., J. Mater. Res. 5, 1409 (1990).Google Scholar
7. Foiles, S.M. and Daw, M.S., J. Mater. Res. 2, 5 (1987).Google Scholar
8. Wang, T.M., Shimotomai, M., and Doyama, M., J. Phys, F:Phys. 14, 37 (1984).Google Scholar
9. Hantojarvi, P., Johanson, J., Morse, P., Pollanen, L., Vehanen, A., and Yli-Kauppila, J., in Point Defects and Defect Interactions in Metals, edited by Takamura, J., 1982, pp. 504.Google Scholar
10. Hantojarvi, P., in Positron in Solids, Springer-Verlag, 1979.Google Scholar
11. Chen, S.P., Voter, A.F., Albers, R.C, Boring, A.M. and Hay, P.J., J. Mater. Res. 5, 955 (1990).Google Scholar