Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-25T20:33:25.101Z Has data issue: false hasContentIssue false
  • English
  • Français

Assessment of the Compositional Influences on the Toughness of TiCr2-Base Laves Phase Alloys

Published online by Cambridge University Press:  15 February 2011

Katherine C. Chen ,
Samuel M. Allen  and
James D. Livingston
Katherine C. Chen
Affiliation:
Massachusetts Institute of Technology, Dept. of Mat. Sci. and Eng., Cambridge, MA 02139
Samuel M. Allen
Affiliation:
Massachusetts Institute of Technology, Dept. of Mat. Sci. and Eng., Cambridge, MA 02139
James D. Livingston
Affiliation:
Massachusetts Institute of Technology, Dept. of Mat. Sci. and Eng., Cambridge, MA 02139
Get access

Abstract

Systematic studies of alloys based on TiCr2 have been performed in order to improve the toughness of Laves phase intermetallics. The extent to which alloy compositions and annealing treatments influence the toughness was quantified by Vickers indentation. The single-phase Laves behavior was first established by studying stoichiometric and nonstoichiometric TiCr2. Next, alloying effects were investigated with ternary Laves phases based on TiCr2. Different microstructures of two-phase alloys consisting of (Ti,Cr)-bcc+TiCr2 were also examined. Various toughening theories based on vacancies, site-substitutions, crystal structure (C14, C36, or C15) stabilization, and the presence of a second phase were evaluated. The most effective factors improving the toughness of TiCr2 were determined, and toughening mechanisms are suggested.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 460: Symposium Z – High-Temperature Ordered Intermetallic Alloys VII , 1996 , 695
Copyright
Copyright © Materials Research Society 1997

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

REFERENCES

1. Inoue, K. and Tachikawa, K., IEEE Trans. Magn. MAG-13, 840 (1977).Google Scholar
2. Livingston, J.D. and Hall, E.L., J. Mater. Res. 5, 5 (1990).Google Scholar
3. Chu, F. and Pope, D.P., Mat. Sci. Eng., A170, 39 (1993).Google Scholar
4. Hazzledine, P.M., Kumar, K.S., Miracle, D.B., and Jackson, A.G. in High-Temperature Ordered Intermetallic Alloys V. edited by Baker, I., Whittenberger, J.D., Darolia, R., and Yoo, M.H. (Mater. Res. Soc. Symp. Proc. 288, Pittsburgh, PA, 1992) pp. 591–596.Google Scholar
5. Kumar, K.S. and Miracle, D.B., Intermetallics 2, 257 (1994).Google Scholar
6. Livingston, J.D., Phys. Stat. Sol. (a) 131, 415 (1992).Google Scholar
7. Anstis, G.R., Chantikul, P., Lawn, B.R., and Marshall, D.B., J. Am. Cer. Soc. 64, 533 (1981).Google Scholar
8. Chen, K.C., Allen, S.M., and Livingston, J.D. in High-Temperature Ordered Intermetallic Alloys VI. edited by Horton, J.A., Baker, I., Hanada, S., Noebe, R.D., and Schwartz, D.S. (Mater. Res. Soc. Symp. Proc. 364, Pittsburgh, PA, 1994) pp. 1401–1406.Google Scholar
9. Chen, K.C., Allen, S.M., and Livingston, J.D., work in progress.Google Scholar
10. Laves, F. and Witte, H., Metallwertschaft 15, 840 (1936).Google Scholar
11. Foley, J.C., Thoma, D.J., and Perepezko, J.H., Metall. Et Mater. Trans. 25, 230 (1994).Google Scholar
12. Zhang, S., Nie, J.P., and Mikkola, D.E., Scripta Metall. Et Mater. 24, 1099 (1990).Google Scholar
13. Chen, K.C., Allen, S.M., and Livingston, J.D. in High-Temperature Ordered Intermetallic Alloys V. edited by Baker, I., Whittenberger, J.D., Darolia, R., and Yoo, M.H. (Mater. Res. Soc. Symp. Proc. 288, Pittsburgh, PA, 1992) pp. 373–378.Google Scholar
14. Bhandarkar, M.D., Bhat, M.S., Zackay, V.F., and Parker, E.R., Metall. Trans., 6A, 1281 (1975).Google Scholar
15. Takasugi, T., Hanada, S., and Miyamoto, k., J. Mater. Res. 8, 3069 (1993).Google Scholar