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Microstructural Development of Mo(ss) + T2 Two-Phase Alloys

Published online by Cambridge University Press:  10 February 2011

R. Sakidja ,
G. Wilde ,
H. Sieber  and
J. H. Perepezko
R. Sakidja
Affiliation:
Dept. of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Ave., Madison, WI 53706
G. Wilde
Affiliation:
Dept. of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Ave., Madison, WI 53706
H. Sieber
Affiliation:
Dept. of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Ave., Madison, WI 53706
J. H. Perepezko
Affiliation:
Dept. of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Ave., Madison, WI 53706
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Abstract

The microstructure evolution involving Mo-B-Si as-solidified alloys with compositions in the Mo solid-solution(ss) + T2 two-phase field has been examined following arc-melting and rapid solidification processing (RSP). Several solidification pathways in the arc-melted alloys have been identified. Compositional segregation during conventional solidification results in the formation of additional phases such as borides in the arc-melted alloys which require a prolonged solid-state annealing to obtain equilibrated two-phase microstructures. The RSP methods employed, splat-quenching (SQ) and powder drop tube processing (DTP), allow for significant microstructural modifications that facilitate the attainment of uniform dispersions of Mo(ss) phase in a T2 phase matrix.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 552: Symposium KK – High-Temperature Ordered Intermetallic Alloys VIII , 1998 , KK6.3.1
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

1. Vasudevan, A. K. and Petrovic, J. J., Mater. Sci. Eng., A155, 1–17 (1992).CrossRefGoogle Scholar
2. Boettinger, W. J., Perepezko, J. H. and Fankwicz, P. S., Mater. Sci. Eng., A155, 33–44 (1992).CrossRefGoogle Scholar
3. Nowortny, H., Kieffer, R., Benesovsky, F., Plan. Fuer Pulvermetallurgie, 5, 86 (1957).Google Scholar
4. Perepezko, J.H., Nunes, C.A., Yi, S.H. and Thoma, D.J., in High-Temperature Ordered Intermetallic Alloys VII, edited by Koch, C.C., Liu, C. T., Stoloff, N. S. and Wanner, A., (Mater. Res. Soc. Proc. 460, Pittsburgh, PA, 1997), pp. 1–14.CrossRefGoogle Scholar
5. Nunes, C.A., Sakidja, R. and Perepezko, J.H., in Structural Intermetallics 1997, edited by Nathal, M. V., Darolia, R., Liu, C. T., Martin, P. L., Miracle, D. B., Wagner, R. and Yamaguchi, M., (TMS, Warrendale, PA, 1997), pp. 831–839.Google Scholar
6. Thorn, A. J., Meyer, M. K., Akinc, M. and Kim, Y., in Processing and Fabrication of Advanced Materials for High Temperature Applications III, edited by Srivitsan, T. S. and Ravi, V. A., (TMS, Warrendale, PA, 1993) p. 413.Google Scholar
7. Sakidja, R., Sieber, H. and Perepezko, J. H., in Molybdenum and Molybdenum Alloys, edited by Crowson, A., Chen, E. S., Shield, J. A and Subramanian, P. R. (TMS, Warrendale, PA, 1998), pp. 99–110.Google Scholar
8. Bertero, G. A., Hofmeister, W. H., Robinson, M. R. and Bayuzick, R. J., Met. Trans., 22A, 2713–2721 (1991).CrossRefGoogle Scholar
9. Inoue, A., Sakai, S., Kimura, H., Masumoto, T. and Hoshi, A., Scripta Met., 14, 235–239 (1980).CrossRefGoogle Scholar