Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-25T18:30:27.932Z Has data issue: false hasContentIssue false
  • English
  • Français

Dislocation Behaviour in the Octahedral Plane in Ni3Ga Single Crystals

Published online by Cambridge University Press:  26 February 2011

A. Couret ,
Y. Sun  and
P.M. Hazzledine
A. Couret
Affiliation:
Cemes-Loe/Cnrs 29, rue J. Marvig, BP 4347, 31055 Toulouse Cedex, France
Y. Sun
Affiliation:
Department of Materials, Univ. of Oxford Parks Road,Oxford OXI 3PH England
P.M. Hazzledine
Affiliation:
Cemes-Loe/Cnrs 29, rue J. Marvig, BP 4347, 31055 Toulouse Cedex, France
Get access

Abstract

Weak beam electron microscopy has been used to study the substructure in octahedral planes in Ni3Ga deformed in the range of the yield stress anomaly. The substructure is formed by screw dislocations in the Kear Wilsdorf configuration, which contain numerous superkinks. A statistical analysis of the superkink height has been performed. The effect of a first high temperature deformation on a second low temperature one has been investigated. The behaviour of the dislocations has been deduced from these experimental results and from those of the literature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 317
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

REFERENCES

[1] Dimiduk, D., Proc. Int. Conf. on Dislocation Mechanisms and Strength of Advanced Materials Aussois, France, to appear in Journal de Physique Paris (III) (1991).Google Scholar
[2] Hirsch, P.B. and Dimiduk, D.,Proc. Int. Conf. on Dislocation Mechanisms and Strength of Advanced Materials .Google Scholar
[3] Couret, A. and Caillard, D., Phil. Mag. A59, 783 and 801 (1989).Google Scholar
[4] Clément, N., Couret, A., and Caillard, D., to appear in Phil. Mag (1991) ;Google Scholar
4a Clément, N., Molenat, G., and Caillard, D.,to appear in Phil. Mag (1991) .Google Scholar
[5] Couret, A., Sun, Y.Q., Hazzledine, P.M. and Hirsch, P.B., to be published.Google Scholar
[6] Sun, Y.Q. and Hazzledine, P.M., Phil. Mag. A58, 603 (1988).Google Scholar
[7] Komer, A., Phil. Mag. A58, 507 (1988).Google Scholar
[8] Tounsi, B., Ph D Thesis, University of Poitiers (France) (1988).Google Scholar
[9] Tounsi, B., Beauchamp, P., Mishima, Y., Suzuki, T. and Veyssière, P., in High Temperature Ordered Intermetallic Alloys III, edited by. Koch, C.C., Liu, C.T., Stoloff, N.S, Taub, A.I. (Mater. Res. Soc. Proc. 133, Pittsburg, PA.1989) p. 731.Google Scholar
[10] Mills, M.J., Baluc, N., and Kamthaler, H.P., High Temperature Ordered Intermetallic Alloys III, p. 203.Google Scholar
[11] Veyssiere, P.,High Temperature Ordered Intermetallic Alloys III, p. 175.Google Scholar
[12] Sun, Y.Q., Ph D Thesis, University of Oxford (1990).Google Scholar
[13] Bontemps, C. and Veyssiere, P., Phil. Mag. Lett., 61, 259 (1990).Google Scholar
[14] Molenat, G., and Caillard, D., Submitted to Phil. Mag.Google Scholar
[15] Kear, B. H. and Wilsdorf, H.G.F., Trans. AIME 224, 382.(1962).Google Scholar
[16] Thornton, P. H., Davies, R. G. and Johnston, T. L., Metall. Trans. 1, 207 (1970).Google Scholar
[17] Mulford, R.A. and Pope, D. P., Acta Met., 21, 1375 (1973).Google Scholar
[18] Staton-Bevan, A. E. and Rawlings, R. D., Phil. Mag., 32, 787 (1975).Google Scholar
[19] Couret, A. and Caillard, D., Aussois, France, to appear in Journal de Physique Paris (III) (1991).Google Scholar
[20] Davies, R. G. and Stoloff, N. S., Trans. Met. Soc. of AIME, 233, 714 (1965).Google Scholar
[21] Yoo, M. H. and Liu, C. T., J. Mat. Res. 3, 845 (1988).CrossRefGoogle Scholar
[22] Dowling, W. E. and Gibala, R., in High Temperature Ordered Intermetallic Alloys HI, edited by. Koch, C.C., Liu, C.T., Stoloff, N.S., Taub, A.I. (Mater. Res. Soc. Proc. 133, Pittsburg, PA.1989) p. 209.Google Scholar
[23] Bonneville, J., Private communication.Google Scholar
[24] Molénat, G. and Caillard, D., To be published.Google Scholar