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Atomistic Simulation of Defect Structure in Ternary Intermetallics

Published online by Cambridge University Press:  22 February 2011

Chris C. Jones,
J. K. Ternes and
D. Farkas
Chris C. Jones
Affiliation:
Department of Materials Science and Engineering Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
J. K. Ternes
Affiliation:
Department of Materials Science and Engineering Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
D. Farkas
Affiliation:
Department of Materials Science and Engineering Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
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Abstract

Interatomic potentials of the Embedded Atom type were used to study defect structure in ternary intermetallics. Interatomic potentials with appropriate inner consistency were developed for the modeling of ternary systems. Alloys were considered in the Nb-Al-Ti and in the Ni-Al-Ti systems. The stability of ternary phases in these systems was studied, particularly the B2 phase in Nb rich alloys of the Nb-Al-Ti system. The effects of increasing Ti additions in these alloys were studied, as well as the APB energies in these ternary alloys.

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References

1. Darolia, R. et al., Overview of NiAl alloys for high temperature structural applications, in Ordered lntermetallics - Physical Metallurgy and Mechanical Behaviour, edited by Liu, C., Cahn, R., and Sauthoff, G., volume 213 of NATO ASl Series, pages 679–698, Kluwer Academic Publishers, 1992.Google Scholar
2. Yasuda, K., Fujiwara, T., Kodoma, H., and Suwa, M., Microstructure of rapidly solidified Nb3Al-x ribbons, in High Temperature Ordered Intermetallic Alloys IV, volume 213, page 865, 1991.Google Scholar
3. Aindow, M., Shyue, J., Gaspar, T., and Fraser, H., Philosophical Magazine Letters 64, 59 (1991).Google Scholar
4. Menon, E., Subramanian, P., and Dimiduk, D., Scripta Metallurgicaet Materialia 27, 265 (1992).Google Scholar
5. Shyue, J., Hou, D., Johnson, S., Aindow, M., and Fraser, H., Deformation mechanisms and mechanical properties of B2 compounds in Ti-modified Nb-Al alloys, in High Temperature Ordered Intermetallic Alloys V, volume 288, page 573, 1993.Google Scholar
6. Farkas, D., Modelling and Simulation in Materials Science and Engineering 2,975 (1994).Google Scholar
7. Farkas, D. and Roqueta, D., Interatomic potentials for B2 NiTi and ternary Ni-Ti-Al alloys, to be published.Google Scholar
8. Pasianot, R. and Savino, E., Physical Review B 45, 12704 (1992).Google Scholar
9. Oh, D. and Johnson, R., Journal of Materials Research 3, 471 (1988).Google Scholar
10. Voter, A. and Chen, S., Accurate interatomic potentials for Ni. Al and Ni3AI, in Materials Research Society Symposium Proceedings, volume 82, pages 175–180, 1987.Google Scholar
11. Farkas, D. and Jones, C., Interatomic potentials for ternary Nb-Ti-Al alloys, to be published.Google Scholar
12. Farkas, D., Mutasa, B., Vailhé, C., and Ternes, K., Interatomic potentials for B2 NiAl intermetallics, Submitted, 1994.Google Scholar
13. Pasianot, R., Farkas, D., and Savino, E., Physical Review B 43,6952 (1991).Google Scholar
14. Hou, D., Shyue, J., Yang, S., and Fraser, H., Defects, deformation mechanisms and phase stabilities in Nb-based B2 compounds, to be published, 1994.Google Scholar
15. Hou, D., Yang, S., Shyue, J., and Fraser, H., Investigation of B2 and related phases in Ti-modified Nb-Al alloys, to be published, 1994.Google Scholar
16. Shyue, J., Hou, D., Aindow, M., and Fraser, H., Materials Science and Engineering A 170, 1 (1993).Google Scholar
17. Ternes, K. and Farkas, D., Stoichiometry effects on core structure and mobility in B2 NiAl, to be published.Google Scholar
18. Farkas, D. and Xie, Z., Possibilities of slip modification in B2 NiAl, in Materials Research Society Symposium Proceedings, volume 288, pages 305–310, 1993.Google Scholar
19. Ternes, K., Xie, Z., and Farkas, D., Materials Science and Engineering A (1995), to appear.Google Scholar
20. Ternes, K., Farkas, D., and Xie, Z., Atomistic simulation of dislocation motion as determined by core structure, in Materials Research Society Symposium Proceedings, volume 350, pages 293–298, 1994.Google Scholar
21. Vailhé, C. and Farkas, D., Shear faults and dislocation core structures in B2 CoAl, to be published.Google Scholar
22. Vailhé, C. and Farkas, D., Shear faults and dislocation core structures in B2 FeAl, to be published.Google Scholar