Hostname: page-component-848d4c4894-nr4z6 Total loading time: 0 Render date: 2024-05-18T01:57:13.176Z Has data issue: false hasContentIssue false

Evaluation of the Thermodynamic Properties and Phase Equilibria of the Ordered γ’ and Disordered γ Phases in the Ni-Al-Ta System

Published online by Cambridge University Press:  11 February 2011

Shihuai Zhou
Affiliation:
Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802.
Long-Qing Chen
Affiliation:
Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802.
Rebecca A. MacKay
Affiliation:
Materials Division, NASA Glenn Research Center, 2100 Brookpark Road, Cleveland, OH 44135.
Zi-Kui Li u
Affiliation:
Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802.
Get access

Abstract

The phase equilibria and thermodynamic properties of the ternary Ni-Al-Ta system on Ni-rich side were analyzed. Thermodynamic descriptions of the liquid, γ-fcc, γ'-L12, and π-Ni6AlTa phases were obtained using the CALPHAD (CALculation of PHase Diagrams) technique. The thermodynamics of γ-fcc and γ'-L12 phases were modeled with a single Gibbs energy function taking into account the crystallographic relation between the two phases. The ternary interaction parameters of the liquid and fcc phases were also determined. The calculated phase diagrams of the ternary Ni-Al-Ta system show a good agreement with experimental data.

Type
Research Article
Copyright
Copyright © Materials Research Society 2003

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

REFERENCE

Kaufman, L. and Bernstein, H., Computer Calculation of Phase Diagrams, Academic Press Inc., New York, (1970).Google Scholar
Saunders, N. and Miodownik, A. P., CALPHAD (Calculation of Phase Diagrams): A Comprehensive Guide, Pergamon, Oxford; New York, (1998).Google Scholar
3. Kaufman, L., Calphad 15, 261282 (1991).Google Scholar
4. Dupin, N., Ph. D. Thesis, Institute national Polytechnique, Grenoble, France (1995).Google Scholar
5. Ansara, I., Dupin, N., Lukas, H. L. and Sundman, B., J. Alloy. Compd. 247, 2030 (1997).Google Scholar
6. Kattner, U. R., unpublished work, NIST, Gaithersburg, USA, (1990).Google Scholar
7. Ansara, I. and Selleby, M., Calphad 18, 99107 (1994).Google Scholar
8. Saunders, N., in COST 507 Rand, M. H., Ed. (European Communities, Luxembourg, 1998), Vol. 2, pp. 8388.Google Scholar
9. Cui, Y. W. and Jin, Z. P., Z. Metallkd. 90, 233241 (1999).Google Scholar
10. Giessen, B. C. and Grant, N. J., ACTA Metall. 15, 871877 (1967).Google Scholar
11. Willemin, P., Dugue, O., Durand-Charre, M. and Davidson, J. H., Mater. Sci. Technol. 2, 344348 (1986).Google Scholar
12. Nash, P. and West, D. T. F., Met. Sci. 13, 670676 (1979).Google Scholar
13. Willemin, P., Durand-Charre, M. and Ansara, I., Report EUR. 2, 955964 (1986).Google Scholar
14. Hong, Y. M., Mishima, Y. and Suzuki, T., Mater. Res. Soc. Symp. Proc. 133, 429440 (1989).Google Scholar
15. Palm, M., Sanders, W. and Sauthoff, G., Z. Metallkd. 87, 390398 (1996).Google Scholar
16. Dinsdale, A. T., Calphad 15, 317425 (1991).Google Scholar
17. Redlich, O. and Kister, A. T., Ind. and Eng. Chem. 40, 345348 (1948).Google Scholar
18. Ansara, I., Sundman, B. and Willemin, P., Acta Metall. 36, 977982 (1988).Google Scholar
19. Dupin, N., Ansara, I. and Sundman, B., Calphad 25, 279298 (2001).Google Scholar
20. Liu, Z. K. and Chang, Y. A., Metall. Mater. Trans. A 30, 10811095 (1999).Google Scholar
21. Sundman, B., Ansara, I., Hillert, M., Inden, G., Lukas, H. L. and Kumar, K. C. H., Z. Metallk. 92, 526532 (2001).Google Scholar
22. Jansson, B., Evaluation of Paramters in Thermochemical Models Using Different Types of Experimental Data Simultaneously, Royal Institute of Technology, Stockholm, Sweden, 1984, (1984).Google Scholar
23. Sundman, B., Jansson, B. and Andersson, J. O., Calphad 9, 153190 (1985).Google Scholar
24. Zhou, S. H. and Liu, Z. K., Metall. Mater. Trans. A 33, 27812787 (2002).Google Scholar