Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-18T12:17:37.519Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthesis and Characterization of Nanostructured M50 Steel

Published online by Cambridge University Press:  15 February 2011

K. E. Gonsalves ,
S. P. Rangarajan ,
A. Garcia-ruiz  and
C. C. Law
K. E. Gonsalves
Affiliation:
Institute of Materials Science and Department of Chemistry, University of Connecticut, Storrs, CT, 06269.USA.
S. P. Rangarajan
Affiliation:
Institute of Materials Science and Department of Chemistry, University of Connecticut, Storrs, CT, 06269.USA.
C. C. Law
Affiliation:
Pratt & Whitney, East Hartford, CT, 06108.USA.
Get access

Abstract

The synthesis of nanostructured multicomponent (Fe-Mo-Cr-V-C) M50 type steel has been carried out by two chemical routes: the sonochemical decomposition of organometallic precursors and the co-reduction of the respective metal halides. Both methods produce amorphous nanopowders, but the co-reduction method requires an additional heat treatment in vacuum at 700 °C to remove the by-product LiCl. In this paper we describe the synthetic methods and the characterization of the powders by XRD and SEM-EDAX. The powders exhibit a composition very close to that of M50 steel with an average grain size in the nanometer regime. In both cases the powders have been compacted in a vacuum hot press after they were heat treated in hydrogen. The characterization of the compacted specimens by XRD and SEM-EDAX is also discussed. The TEM characterization is presented for the sonochemically produced powders and compacts. A similar characterization of the co-reduced powders and the compacts is in progress. The consolidated specimens are homogeneous and dense, with an average grain size of ∼30 nm. Their hardness is higher as compared with that of the conventional M50 alloy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 400: Symposium E – Metastable Metal-Based Phases and Microstructures , 1995 , 49
Copyright
Copyright © Materials Research Society 1996

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

1. Bridge, J. E. Jr., Maniar, G. N. and Philip, T. V., Metal. Trans. 2, 131 (1993).Google Scholar
2. Gonsalves, K. E., Xiao, T. D., Chow, G. M. and Law, C. C., NanoStruct. Mater. 4, 139 (1994).Google Scholar
3. Davis, S. C. and Klabunde, K. J., Chem. Rev. 82, 152 (1982).Google Scholar
4. Xiao, T. D., Gonsalves, K. E., Strutt, P. R. and Klemens, P., J. Mater. Sci. 28, 1334 (1993).Google Scholar
5. Xiao, T. D., Gonsalves, K. E. and Strutt, P. R., NanoStruct. Mater. 1, 1 (1992).Google Scholar
6. Brinker, C. J. and Scherer, G. W., Sol-Gel Science, The Physics and Chemistry of Sol-Gel Processing, Academic Press, San Diego, 1990.Google Scholar
7. Chang, W., Skandan, G., Hahn, H., Danforth, S. C. and Kear, B. H., NanoStruct. Mater. 4, 3 (1994).Google Scholar
8. Bonneman, H., Brijoux, W., Brinkmann, R., Fretzen, R., Joussen, T., Koppler, R., Korall, B., Neitler, P. and Richter, J., J. Mol. Catal. 86, 129 (1994).Google Scholar
9. Gonsalves, K. E., Strutt, P. R., Xiao, T. D. and Klemens, P., J. Mater. Sci. 12, 3231 (1992).Google Scholar
10. Suslick, K. S., Science 247, 1439 (1990).Google Scholar
11. Suslick, K. S., Ultrasonics 30, 171 (1992).Google Scholar
12. Young, R. A. and Desai, P.. Arch. Nauki Mater. 10, 71 (1989).Google Scholar
13. Schneider, J., Acta Cryst. A43, 295 (1987).Google Scholar
14. Suslick, K. S., Scientific American, February, 80 (1989).Google Scholar