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The Creep Behavior of Cr Modified Ni3 Al Single Crystals

Published online by Cambridge University Press:  26 February 2011

S. E. Hsu ,
C. H. Tong ,
T. S. Lee  and
T. S. Liu
S. E. Hsu
Affiliation:
Chung Shan Institute of Science and Technology P.O.BOX 90008-8, Lung-Tan, Taiwan 32526, R.O.C.
C. H. Tong
Affiliation:
Chung Shan Institute of Science and Technology P.O.BOX 90008-8, Lung-Tan, Taiwan 32526, R.O.C.
T. S. Lee
Affiliation:
Chung Shan Institute of Science and Technology P.O.BOX 90008-8, Lung-Tan, Taiwan 32526, R.O.C.
T. S. Liu
Affiliation:
Chung Shan Institute of Science and Technology P.O.BOX 90008-8, Lung-Tan, Taiwan 32526, R.O.C.
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Abstract

Ni-Al-Cr single crystals with 4 at% Cr and different levels of aluminum content are grown in a directional solidification facility. The crystals are creep tested at temperatures from 760°C to 860°C. Steady state, as well as transient, creep rates are measured. The results show that Cr modified Ni3 A1, when tested along the <100> direction, exhibit remarkably high values of activation energy for creep. Along with evidence from dislocation structures, it is likely that there is a change in the dislocation core structure upon Cr addition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 133: Symposium H – High-Temperature Ordered Intermetallic Alloys III , 1988 , 275
Copyright
Copyright © Materials Research Society 1989

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References

REFERENCES

1. Schneibel, J.H., Petersen, G.F. and Liu, C.T., J. Mat. Res. 1, 68 (1986).Google Scholar
2. Flinn, P.A., AIME Trans., 218, 145 (1960).Google Scholar
3. Nicholls, J.R. and Rawlings, G.R., J. Mat. Sci. 12, 2456 (1977).CrossRefGoogle Scholar
4. Ham, R.K.,Cook, R.H. and Purdy, G.R., Metal Sci. J., 6, 73 (1972).Google Scholar
5. Hemker, K.J. and Nix, W.D., in this meeting.Google Scholar
6. Shah, D.M., Scripta Met., 17, 997 (1983).Google Scholar
7. Hsu, S.E., Tong, C.H., Lee, S.Y. and Liu, T.S., to be published by Script Met. 1989.Google Scholar
8. Anton, D.L., Pearson, D.D. and Snow, D.B. in “High-Temperature ordered Intermetallic Alloys II’, ed. by Stoloff, N.S., Koch, C.C., Liu, C.T. and Izumi, O. (Mat. Res. Soc. Proc. 81, Pittsburgh, PA 1987), pp. 287.Google Scholar
9. noue, A., Tomiku, H. and Masumoto, T.. Met. Trans. A, 14, 1367 (1983).Google Scholar
10. Hsu, S.E., Hsu, N.N., Tong, C.H., Ma, C.Y. and Lee, S.Y. in ‘High Temperature Ordered Intermetallic Alloys II’, ed. By Stoloff, N.S., Koch, C.C., Liu, C.T. and Izumi, O. (Mat. Res. Soc. Proc. 81, Pittsburgh, PA 1987). pp.507 Google Scholar
11. Choudhury, A., Mukhopadhay, J.K., Mukherjee, A.K., presented at the TMS 1988 Meeting, Phoenix, AZ, 1988 (unpublished).Google Scholar
12. Carry, C. and Strudel, J.L., Acta Met., 25, 767 (1977).CrossRefGoogle Scholar
13. Tong, C.H., Liu, T.S. and Lee, T.S. to be published by Chinese Mat. Sci. 1989.Google Scholar
14. Sun, Y.Q. and Hazzledine, P.M., Phil. Mag A, 58, 603 (1988).Google Scholar