Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-25T15:51:10.479Z Has data issue: false hasContentIssue false
  • English
  • Français

Processing and High Temperature Deformation of Nb3Al

Published online by Cambridge University Press:  01 January 1992

Y. Murayama ,
T. Kumagai  and
S. Hanada
Y. Murayama
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980, Japan
T. Kumagai
Affiliation:
Now at National Research Institute for Metals, Tokyo 153, Japan
S. Hanada
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980, Japan
Get access

Abstract

Alloys based on the ordered intermetallic Nb3Al were fabricated by powder metallurgy processing, infiltration processing and clad-chip extrusion processing. By controlling processing variables, single phase Nb3Al and two phase Nb3Al-Nb solid solution alloys were obtained with various microstructures. The single phase Nb3Al deforms by {001 }<100> slip above 1400K and stress-strain curves exhibit deformation softening after showing a high peak stress. Transmission electron microscopic observations revealed that dislocations are dissociated into two partial dislocations which bound a stacking fault and the dissociation width between the partial dislocations depends on aluminum content in Nb3Al. The deformation softening was found to be caused by dynamic recrystallization. The two phase alloy shows similar stress-strain curves to the single phase alloys. However, sub-boundaries and dislocation networks were observed without recrystallized grains.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 95
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. Umakoshi, Y., Bulletin Japan Inst. Metals, 30, 72–79(1991).Google Scholar
2. Kumagai, T., Doctoral Thesis, Tohoku University, (1992).Google Scholar
3. Marieb, T.N., Kaiser, A.D., Nutt, S.R., Anton, D.L. and Shah, D.M., in High-Temperature Ordered Intermetallic Alloys IV, edited by Johnson, L.A., Pope, D.P. and Stiegler, J.O. (Mater. Res. Soc. Proc. 213, Pittsburgh, PA, 1991) pp.329–336.Google Scholar
4. Foner, S. and McNiff, E.J. Jr.: Phisica, 55, 534–539 (1971).Google Scholar
5. Akihama, R., Murphy, R.J. and Foner, S.: IEEE Trans.Magn., MAG-17, 274–277 (1981).Google Scholar
6. Thieme, C.L.H., Zhang, H., Otubo, J., Pourrahimi, S., Schwartz, B.B. and Foner, S.: IEEE Trans.Magn., MAG-19, 567–569(1983).Google Scholar
7. Thieme, C.L.H., Pourrahimi, S., Schwartz, B.B. and Foner, S.: Appl. Phys. Lett., 44 260–262(1984).Google Scholar
8. Watanabe, K., Noto, K. and Muto, Y.: IEEE Trans. Magn., MAG-23, 1428–1431(1987).Google Scholar
9. Picus, M.R., Holthis, J.T. and Rosen, M.: Filamentary A-15 Superconductors, Ed.by Suenaga, M. and Clark, A.F. (Plenum Press, New York, 1980) pp.331–353.Google Scholar
10. Ceresara, S., Ricci, M.V., Sacchetti, N. and Sacerdoti, G.: IEEE Trans. Magn., MAG-11, 263–265(1975).Google Scholar
11. Dew-Hughes, D.: IEEE Trans. Magn., MAG-17, 561–564(1981).Google Scholar
12. Inoue, K., Iijima, Y. and Takeuchi, T.: Appl. Phys.Lett., 52, 1724–1725(1988).Google Scholar
13. Suyama, R. and Hashimoto, K., in High-performance Materials for Severe Environments, edited by R & D Institute of Metals and Composites for Future Industries (Japan Industrial Technology Association, Tokyo, 1992) pp. 141–150.Google Scholar
14. Murayama, Y., Hanada, S., Obara, K. and Hiraga, K., Phil. Mag. A, in press.Google Scholar
15. Aindow, M., Shyue, J., Gaspar, T.A. and Fraser, H.L., Phil. Mag. Lett. 64, 59–65(1991).Google Scholar
16. Kumagai, T. and Hanada, S., Mater. Sci. Eng. A152, 349–355(1992).Google Scholar
17. Murayama, Y., Hanada, S. and Obara, K., Mater. Sci. Eng. A, in press.Google Scholar
18. Hanada, S., Sato, T., Watanabe, S. and Izumi, O., J. Japan Inst. Metals, 45. 1293–1299(1981).Google Scholar
19. Kim, M.S., Hanada, S., Watanabe, S. and Izumi, O., Mater.Trans., JIM, 30, 77–85(1989).Google Scholar
20. Saito, S., Yoshii, I., Ikeda, K. and Hanada, S., Mater.Trans., JIM, 31, 501–503(1990).Google Scholar
21. Kumagai, T., Hanada, S. and Saito, S., in Intermetallic Compounds-Structure and Mechanical Properties-, edited by Izumi, O., (J1M1S-6 Proc., Sendai, 1991) pp. 1039–1044.Google Scholar
22. Saito, S., Ikeda, S., Ikeda, K. and Hanada, S., J. Japan Inst. Metals, 53, 458–463(1989). 54,737–740(1990). 55, 85–91(1991).Google Scholar