Skip to main content Accessibility help
×
Home

Impression creep behavior of SiC particle-MoSi2 composites

  • Darryl P. Butt (a1), David A. Korzekwa (a1), Stuart A. Maloy (a1), H. Kung (a1) and John J. Petrovic (a1)...

Abstract

Using a cylindrical indenter (or punch), the impression creep behavior of MoSi2-SiC composites containing 0–40% SiC by volume, was characterized at 1000–1200 °C, 258–362 MPa punch pressure. Through finite element modeling, an equation that depends on the material stress exponent was derived that converts the stress distribution beneath the punch to an effective compressive stress. Using this relationship, direct comparisons were made between impression and compressive creep studies. Under certain conditions, compressive creep and impression creep measurements yield comparable results after correcting for effective stresses and strain rates beneath the punch. However, rate-controlling mechanisms may be quite different under the two stressing conditions, in which case impression creep data should not be used to predict compressive creep behavior. The addition of SiC affects the impression creep behavior of MoSi2 in a complex manner by pinning grain boundaries during pressing, thus leading to smaller MoSi2 grains and by obstructing or altering both dislocation motion and grain boundary sliding.

Copyright

References

Hide All
1.Vasudevan, A. K. and Petrovic, J. J., Mater. Sci. Eng. A155, 1 (1992).
2.Petrovic, J. J., MRS Bull. 28 (7), 35 (1993).
3.Unal, O., Petrovic, J. J., Carter, D. H., and Mitchell, T. E., J. Am. Ceram. Soc. 73 (6), 1752 (1990).
4.Maloy, S. A., Mitchell, T. E., Petrovic, J.J., Heuer, A. H., and Lewandowski, J. J., in High-Temperature Silicides and Refractory Alloys, edited by Briant, C. L., Petrovic, J. J., Bewlay, B. P., Vasudevan, A. K., and Lipsitt, H.A. (Mater. Res. Soc. Symp. Proc. 322, Pittsburgh, PA, 1994), p. 21.
5.Sadananda, K., Feng, C. R., Jones, H. N., and Petrovic, J. J., Mater. Sci. Eng. A155, 227 (1992).
6.Sadananda, K., Feng, C. R., Jones, H. N., and Petrovic, J. J., in Structural Intermetallics, Proceedings of the First International Symposium on Structural Intermetallics, Seven Springs, PA, 1993.
7.Wiederhorn, S. M., Gettings, R. J., Roberts, D. E., Ostertag, C., and Petrovic, J. J., Mater. Sci. Eng. A155, 209 (1992).
8.Bose, S., Mater. Sci. Eng. A155, 217 (1992).
9.Yu, E. C. and Li, J. C. M., Philos. Mag. 36 (4), 811 (1977).
10.Yu, E. C. and Li, J. C. M., J. Mater. Sci. 12, 2214 (1977).
11.Chu, S.N.G. and Li, J.C.M., J. Mater. Sci. 12, 2200 (1977).
12.Chu, S.N.G. and Li, J. C. M., Mater. Sci. Eng. 39, 1 (1979).
13.Chu, S.N.G. and Li, J. C. M., Mater. Sci. Eng. 45, 167 (1980).
14.Li, W. B., Henshall, J.L., Hooper, R. M., and Easterling, K. E., Acta Metall. Mater. 39 (12), 3099 (1991).
15.Chiang, D. and Li, J. C. M., J. Mater. Res. 9, 903 (1994).
16.Yang, F. and Li, J. C. M., J. Appl. Phys. 74 (7), 4382 (1993).
17.Yang, F. and J.Li, C. M., J. Appl. Phys. 74 (7), 4390 (1993).
18.Raman, V. and Berriche, R., J. Mater. Res. 7, 627 (1992).
19.De La Torre, A., Adeva, P., and Aballe, M., J. Mater. Sci. 26, 4351 (1991).
20.Lucas, G. E. and Pendleton, C., J. Nucl. Mater. 103, 1539 (1981).
21.Roebuck, B. and Almond, E. A., J. Mater. Sci. Lett. 1, 519 (1982).
22.Li, W. B. and Warren, R., Acta Metall. Mater. 41 (10), 3065 (1993).
23.Backofen, W. A., Deformation Processing (Addison-Wesley Publishing Co., Reading MA, 1972), p. 135.
24.Eggert, G. M. and Dawson, P.R., Int. J. Mech. Sci. 28, 563 (1986).
25.Langdon, T. G., in Deformation of Ceramic Materials, edited by Bradt, R. C. and Tressler, R. E. (Plenum Press, New York, 1975), p. 101.
26.Cannon, W. R. and Langdon, T. G., J. Mater. Sci. 18, 1 (1983).
27.Cotton, J. D., Kim, Y.S., and Kaufman, M. J., Mater. Sci. Eng. A144, 287 (1991).
28.Kim, Y. S., Johnson, M. R., Abbaschian, R., and Kaufman, M.J., in High-Temperature Ordered Intermetallic Alloys IV, edited by Johnson, L. A., Pope, D. P., and Stiegler, J. O. (Mater. Res. Soc. Symp. Proc. 213, Pittsburgh, PA, 1991), p. 839.
29.Jacobson, N. S., Lee, K.N., Maloy, S. A., and Heuer, A.H., J. Am. Ceram. Soc. 76 (8), 2005 (1993).

Related content

Powered by UNSILO

Impression creep behavior of SiC particle-MoSi2 composites

  • Darryl P. Butt (a1), David A. Korzekwa (a1), Stuart A. Maloy (a1), H. Kung (a1) and John J. Petrovic (a1)...

Metrics

Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.