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An Explanation of the Small Strain-Rate Sensitivity of Ni3Al

Published online by Cambridge University Press:  15 February 2011

Y. Q. Sun
Y. Q. Sun*
Affiliation:
Wright Laboratory, Materials Directorate, WL/MLLM, and Systran Corp., Dayton, Ohio.
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Abstract

Based on the superkink model, an explanation is given in this paper for the small strain-rate sensitivity of the anomalous yield stress of Ni3Al. The yield stress is proposed to be the stress needed to destabilise the average superkinks and it varies inversely with superkink height. The yield stress is insensitive to the strain-rate because the superkink height is controlled by the rate at which the superkink widens and is not directly related with the superkink propagation speed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 460: Symposium Z – High-Temperature Ordered Intermetallic Alloys VII , 1996 , 523
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

1. Pope, D.P. and Ezz, S.S., Int. Metals Rev. 29, 136 (1984).Google Scholar
2. Suzuki, T., Mishima, Y. and Miura, S., ISIJ Int. 29, 1 (1989).Google Scholar
3. Umakoshi, Y., Pope, D.P. and Vitek, V., Acta Metall. 32, 449 (1984).Google Scholar
4. Kear, B.H. and Wilsdorf, H.G., Trans. AIME 224, 382 (1962).Google Scholar
5. Thornton, P.H., Davies, R.G. and Johnston, T.L., Met. Trans. 1, 207 (1970).Google Scholar
6. Veyssiere, P., MRS Proceedings, 133, 175 (1989).Google Scholar
7. Sun, Y.Q. and Hazzledine, P.M., Phil. Mag. 58A, 603 (1988).Google Scholar
8. Mills, M.J., Baluc, N. and Karnthaler, H.P., MRS Proceedings 133, 203 (1989).Google Scholar
9. Takeuchi, S. and Kuramoto, E., Acta Metall. 21, 415 (1973).Google Scholar
10. Paidar, V., Pope, D.P. and Vitek, V., Acta Metall. 32, 435 (1984).Google Scholar
11. Sun, Y.Q., D. Phil Thesis, University of Oxford (1990).Google Scholar
12. Hirsch, P.B., Phil. Mag. 65A, 569 (1992).Google Scholar
13. Ezz, S.S. and Hirsch, P.B., Phil. Mag. 69A, 105 (1994).Google Scholar
14. Khanta, M., Certi, J. and Vitek, V., Scripta Metall. Mater. 27, 481 (1992).Google Scholar
15. Louchet, F., J. de Physique IV, 6, C2–189 (1996).Google Scholar
16. Couret, A., Sun, Y.Q. and Hirsch, P.B., Phil. Mag. 67A, 29 (1993).Google Scholar
17. Basinski, S.J. and Basinski, Z.S., in Dislocations in Solids, Vol. 4, ed. Nabarro, F.R.N., North Holland (Amsterdam, 1979), p. 261.Google Scholar
18. Sun, Y.Q., Acta Metall., submitted (1996).Google Scholar