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Microstructures and Mechanical Properties of Two-Phase Alloys Based on NbCr2

Published online by Cambridge University Press:  10 February 2011

Katherine C. Chen
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545, USA, kchen@lanl.gov
Paul G. Kotula
Affiliation:
Sandia National Laboratory, Albuquerque, NM 87185
Carl M. Cady
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545, USA, kchen@lanl.gov
Michael E. Mauro
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545, USA, kchen@lanl.gov
Dan J. Thoma
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545, USA, kchen@lanl.gov
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Abstract

A two-phase, NbCrTi alloy (bce + C15 Laves phase) has been developed using several alloy design methodologies. In efforts to understand processing-microstructure-property relationships, different processing routes were employed. The resulting microstructures and mechanical properties are discussed and compared. Plasma arc melted (PAM) samples served to establish baseline, as-cast properties. In addition, a novel processing technique, involving decomposition of a supersaturated and metastable precursor phase during hot isostatic pressing (HIP), was used to produce a refined, equilibrium two-phase microstructure. Quasi-static compression tests as a function of temperature were performed on both alloy types. Different deformation mechanisms were encountered based upon temperature and microstructure.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

1. Fleischer, R.L., Mater. Res. Soc. Symp. Proc. 133, 305 (1989).CrossRefGoogle Scholar
2. Anton, D.L. and Shah, D.M., Mater. Res. Soc. Symp. Proc. 213, 733 (1991).CrossRefGoogle Scholar
3. Livingston, J.D., Phys. Stat. Sol. (a) 131, 415 (1992).CrossRefGoogle Scholar
4. Chen, K.C., Allen, S.M., and Livingston, J.D., Mater. Sci. and Eng. A242, 163 (1998).Google Scholar
5. Chen, K.C., Thoma, D.J., Kotula, P.G., Chu, F., Cady, C., Gray, G.T. II, Dunn, P S., Korzekwa, D.R., Mercer, C., and Soboyejo, W., The Third Pacific Rim International Conference on Advanced Materials and Processing (PRICM 3), (TMS, 1998), p. 1431.Google Scholar
6. Thoma, D.J., Chu, F., Peralta, P., Kotula, P.G., Chen, K.C., and Mitchell, T.E., Mater. Sci. and Eng. A240, 251 (1997).CrossRefGoogle Scholar
7. Thoma, D.J., PhD thesis, University of Wisconsin, 1992.Google Scholar
8. Livingston, J.D. and Hall, E.L., J. Mater. Res. 5, 5 (1990).CrossRefGoogle Scholar
9. Chen, K.C., Kotula, P G., Chu, F, and Thoma, D.J., Mater. Res. Soc. Symp. Proc. 481, 89 (1998).CrossRefGoogle Scholar
10. Takasugi, T., Hanada, S., Yoshida, M., Mat. Sci. Eng. A192/193, 805 (1995).CrossRefGoogle Scholar
11. Chen, K.C., Allen, S.M., and Livingston, J.D., Mater. Res. Soc. Symp. Proc. 288, 373 (1993).CrossRefGoogle Scholar
12. Chu, F. and Pope, D.P., Mater. Res. Soc. Symp. Proc. 288, 561 (1993).CrossRefGoogle Scholar
13. Chan, K.S., Davidson, D.L., and Anton, D.L., Metall. Trans. 28A, 1797 (1997).CrossRefGoogle Scholar
14. Aoyama, N. and Hanada, S., Mat. Trans., JIM 38, 155 (1997).CrossRefGoogle Scholar