Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-13T02:01:30.107Z Has data issue: false hasContentIssue false
  • English
  • Français

Elastic moduli of MoSi2-based materials

Published online by Cambridge University Press:  31 January 2011

S.R. Srinivasan  and
R.B. Schwarz
S.R. Srinivasan
Affiliation:
Center for Materials Science, Mail Stop K765, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
R.B. Schwarz
Affiliation:
Center for Materials Science, Mail Stop K765, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Get access

Abstract

We prepared MoSi2, two-phase MoSi2/Mo5Si3, and (Mo, W)Si2 solid-solution alloy powders by mechanically alloying mixtures of elemental molybdenum, silicon, and tungsten. These powders were consolidated by hot-pressing them at 1500 °C in graphite dies. We measured the elastic moduli of these alloys by a recently developed technique for non-contact ultrasonic spectroscopy. Second-phase Mo5Si3 additions to MoSi2 result in decreased values for G and E, whereas alloying MoSi2 with WSi2 results in increased values for G and E. An analysis of these Young's moduli and of data from the literature for various intermetallic alloys suggests that for any given alloy system, the Young's moduli for its various intermetallics as a function of density fall on a straight line. Further, the lines for the different alloy systems are approximately parallel.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 7 , Issue 7 , July 1992 , pp. 1610 - 1613
Copyright
Copyright © Materials Research Society 1992

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.Watts, O. P., Trans. Am. Electrochem. Soc. 9, 105 (1906).Google Scholar
2.Maxwell, W. A., National Advisory Committee for Aeronautics, Report NACA-RM-E9G01 (1949).Google Scholar
3.Schlichting, J., High Temperatures–High Pressures 10, 241 (1978) (in German); Oak Ridge National Laboratory Report No. ORNL/TR-89–47, 1989 (English translation).Google Scholar
4.Gac, F. D. and Petrovic, J. J., J. Am. Ceram. Soc. 68, C–200 (1985).Google Scholar
5.Petrovic, J. J. and Honnell, R. E., Ceram. Eng. Sci. Proc. 11, 734 (1990).CrossRefGoogle Scholar
6.Petrovic, J. J., Honnell, R. E., and Vasudévan, A. K., in Intermetallic Matrix Composites, edited by Anton, D. L., Martin, P. L., Miracle, D. B., and McMeeking, R. (Mater. Res. Soc. Symp. Proc. 194, Pittsburgh, PA, 1990), p. 123.Google Scholar
7.Proc. First Workshop on High-Temperature Silicides, Gaithersburg, MD, November 4–6, 1991, to be published in Mater. Sci. Eng.Google Scholar
8.Fleischer, R. L., J. Mater. Sci. 22, 2281 (1987).Google Scholar
9.Nakamura, M., Matsumoto, S., and Hirano, T., J. Mater. Sci. 25, 309 (1990).Google Scholar
10.Alouani, M., Albers, R. C., and Methfessel, M., Phys. Rev. B 43, 6500 (1991).Google Scholar
11.Benjamin, J. S., Sci. Am. 234 (5), 40 (1976).CrossRefGoogle Scholar
12.Schwarz, R. B., Srinivasan, S. R., Petrovic, J. J., and Maggiore, C. J., Proc. First Workshop on High-Temperature Silicides, Gaithersburg, MD, November 4–6, 1991, to be published in Mater. Sci. Eng.Google Scholar
13.Grinthal, R. G., J. Electrochem. Soc. 107 (1), 59 (1960).CrossRefGoogle Scholar
14.Kuokkala, V-T. and Schwarz, R. B., Rev. Sci. Instrum. (1991, in press).Google Scholar
15.Press, W. H., Flannery, B. P., Teukolsky, S. A., and Vettering, W. T., Numerical Recipes (Cambridge University Press, Cambridge, 1987).Google Scholar
16.Visscher, W. M., 28th Annual Technical Meeting, Soc. of Engineering Sct., University of Florida, Gainesville, FL, November 6–8, 1991Google Scholar
17.Ohno, I., J. Phys. Earth 24, 355 (1976). 1991.CrossRefGoogle Scholar
18.Yasuda, H. and Koiwa, M., J. Phys. Chem. Solids 52, 723 (1991).Google Scholar
19.Metals Handbook, edited by Boyer, H. E. and Gall, T. L. (ASM, Metals Park, OH, 1985), Part 1Google Scholar
20.Davies, R. G. and Stoloff, N. S., Trans. AIME 233, 714 (1965).Google Scholar
21.Nakamura, M. and Kimura, K., J. Mater. Sci. 26, 2208 (1991).CrossRefGoogle Scholar
22.Yoo, M., Oak Ridge National Laboratory, unpublished results, 1991Google Scholar
23.Fleischer, R. L. and Zabala, R. J., Metall. Trans. A. 21, 2709 (1990).CrossRefGoogle Scholar
24.Schreiber, E., Anderson, O. L., and Soga, N., Elastic Constants and Their Measurement (McGraw-Hill, New York, 1973).Google Scholar