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Additivity of Direct and Indirect Strengthening in TiB2-Reinforced Near-γ Titanium Aluminides

Published online by Cambridge University Press:  15 February 2011

S. L. Kampe ,
P. Sadler ,
L. Christodoulou  and
D. E. Larsen
S. L. Kampe
Affiliation:
Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0237
P. Sadler
Affiliation:
Martin Marietta Laboratories, 1450 S. Rolling Road, Baltimore, MD 21227
L. Christodoulou
Affiliation:
Martin Marietta Laboratories, 1450 S. Rolling Road, Baltimore, MD 21227
D. E. Larsen
Affiliation:
Howmet Corporation, 1500 S. Warner St., Whitehall, MI 49461
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Abstract

An experimentally-based description of strengthening in a series of TiB2-reinforced near-y titanium aluminides is presented. The analysis provides a means to examine the strengthening contributions which are individually attributable to compositional variants, to indirect sources which are present due to the influence of the particulate on the underlying microstructure, and to those directly evolving from the presence of the reinforcement and its interaction with dislocations. Once the indirect strengthening contributions are isolated and arithmetically removed from the magnitude of the experimentally determined composite strength, the resulting direct strengthening increments are found to obey a linear relationship with the inverse-squareroot of the edge-to-edge interparticle spacing. The description of the dependence on spacing is found to be compatible with other studies where similar relationships have been reported.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 350: Symposium U – Intermetallic Matrix Composites III , 1994 , 159
Copyright
Copyright © Materials Research Society 1994

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References

1. Kampe, S.L., Sadler, P., Christodoulou, L., and Larsen, D.E., Metall. et Mater. Trans., (in press).Google Scholar
2. Larsen, D.E., Christodoulou, L., Kampe, S.L., and Sadler, P.: Mater. Sci. Eng., A144, 1991, 45–49.Google Scholar
3. Kanipe, S.L., Clarke, J.A., and Christodoulou, L., in lntermetallic Matrix Composites, edited by D.L., Anton, P.L., Martin, D.B., Miracle, and R., McMeeking (Mater. Res. Soc. Proc. 194, Pittsburgh, PA, 1990), 225–232.Google Scholar
4. Shih, D.S. and Amato, R.A., Scripta Metall., 24, 1990, 2053–2058.Google Scholar
5. Kampe, S.L., Bryant, J.D., and Christodoulou, L.: Metall. Trans., 22A, 1991, 447–454.Google Scholar
6. Thompson, A.W. and Chu, W-Y in Microstructure/Property Relationships in Titanium Aluminides and Alloys, edited by Kim, Y-W and Boyer, R.R., TMS, Warrendale, PA, 1991, 165–177.Google Scholar
7. Vasudevan, V.K., Court, S.A., Kurath, P., and Fraser, H.L., Scripta Metall., 23, 1989, 467–469.Google Scholar
8. Huang, S-C. and Gigliotti, M.F.X., U.S. Patent No. 4,842,820; 1991.Google Scholar
9. Guillard, S. and Rack, H.J., Mater. Sci. Eng., 1994 (in press).Google Scholar
10. Khowash, P.K., Price, D.L., and Cooper, B.R. in High Temperature Ordered Intermetallics IV, (Mater. Res. Soc. Proc. 213, Pittsburgh, PA, 1991), 31ndash;36.Google Scholar
11. Wheeler, D.J., Larsen, D.E., and London, B., 1992 TMS Fall Meeting, Chicago, 1992 (unpublished).Google Scholar
12. Anand, L. and Gurland, J., Metall. Trans., 7A, 1976, 191–197.Google Scholar
13. Aikin, R.M. Jr., Mater. Sci. Eng., A155, 1992, 121–133.Google Scholar
14. Arsenault, R.J., Wang, L., and Feng, C.R., Acta Metall. et Mater., 39, 1991, 47–57.Google Scholar
15. Kampe, S.L., Larsen, D.E., and Sadler, P., (unpublished work).Google Scholar
16. Aikin, R.M. and Christodoulou, L., Scripta Metall., 25, 1991, 9–14.Google Scholar
17. Compiled by Courtney, T.H. in Mechanical Behavior of Materials (McGraw-Hill, New York, 1990), p. 171.Google Scholar