Hostname: page-component-84b7d79bbc-7nlkj Total loading time: 0 Render date: 2024-08-03T16:03:46.415Z Has data issue: false hasContentIssue false
  • English
  • Français

Quarternary and Quinary Additions to Directionally-Solidified X-X3Si Eutectics of Chromium and Vanadium

Published online by Cambridge University Press:  15 March 2011

J Ang ,
VA Vorontsov ,
CL Hayward ,
G Balakrishnan ,
HJ Stone  and
CMF Rae
J Ang
Affiliation:
Dept. of Materials Science, University of Cambridge, Pembroke St., Cambridge, CB2 3QZ, U.K.
VA Vorontsov
Affiliation:
Dept. of Materials Science, University of Cambridge, Pembroke St., Cambridge, CB2 3QZ, U.K.
CL Hayward
Affiliation:
School of Geosciences, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JW, U.K.
G Balakrishnan
Affiliation:
Department of Physics, University of Warwick, Coventry, CV4 7AL, U.K.
HJ Stone
Affiliation:
Dept. of Materials Science, University of Cambridge, Pembroke St., Cambridge, CB2 3QZ, U.K.
CMF Rae
Affiliation:
Dept. of Materials Science, University of Cambridge, Pembroke St., Cambridge, CB2 3QZ, U.K.
Get access

Abstract

An alternative high temperature structural alloy system based on the X-X3Si eutectic compositions of chromium and vanadium is put forward. These low-density (~6g/cm3) eutectics have a bcc solid-solution to increase alloy fracture toughness, and a A15 X3Si as the high temperature load-bearing phase. (½Cr,½V)-(½Cr,½V)3Si was used as the base alloy for further element additions, and is represented by the symbol 山 10at.% tantalum and aluminium were substituted for vanadium as quaternary and quinary alloy additions.

Microstructure, elemental phase partitioning, compression creep and oxidation results will be discussed. Cr-Cr3Si has a tidy, fine lamellar microstructure. Vanadium coarsens and destabilises the lamellae to a limited extent. Tantalum addition causes two distinct populations of eutectic to form; one population having finer lamellae than the other. Aluminium does not coarsen or destabilise the lamellar microstructure. High temperature compression tests at 1200°C and 1300°C show that 山 is stronger than the binary alloys, and of similar strength to the quaternary and quinary alloys.

Keywords

alloyCrSi
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1295: Symposium N – Intermetallic-Based Alloys for Structural and Functional Applications , 2011 , mrsf10-1295-n07-10
Copyright
Copyright © Materials Research Society 2011

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. Dimiduk, D.M. and Perepezko, J.H., MRS Bulletin, 28, 639 (2003).Google Scholar
2. Jackson, M.R., Bewlay, B.P., Rowe, R.G., Skelly, D.W. and Lipsitt, H.A., JOM, 1, 39 (1996).Google Scholar
3. Fleischer, R.L., Gilmore, R.S. and Zabala, R.J., Acta Mat., 37, 2801 (1989).Google Scholar
4. Sadananda, K., Feng, C.R., Mitra, R. and Deevi, S.C., Mat. Sci. Eng. A, 261, 223 (1999).Google Scholar
5. Raj, S.V., Mat. Sci. Eng. A, 192/193, 583 (1995).Google Scholar
6. Okamoto, H., J. Phase Equilib., Vol. 22, 593 (2001).Google Scholar
7. Smith, J.F., Bin. Alloy Phase Diagrams II, ASM International (1990).Google Scholar
8. Shah, D. and Berczik, D., Mat. Sci. Eng. A, 155, 45 (1992).Google Scholar
9. Birks, N., Meier, G.H. and Petit, F.S., Introduction to the High-Temperature Oxidation of Metals, Cambridge University Press, 134 (2006).Google Scholar
10. Rostoker, W., The Metallurgy of Vanadium, John Wiley & Sons Ltd., 130 (1958).Google Scholar
11. Yu, X. and Kumar, K.S., TMS Spring Meeting Presentation (2010).Google Scholar
12. Kocherzhinskii, Y.A. and Vasilenko, V.I., Russian Metallurgy (Metally), 2, 186 (1985).Google Scholar
13. Kumar, K.S., Intermetallics, edited by Stoloff, N.S. et al. ., Chapman and Hall, 392 (1996).Google Scholar
14. Schlesinger, M.E., J. Phase Equilib., 15, 90 (1994).Google Scholar
15. English, J.J., Bin. Tern. Phase Diagrams Cb, Mo, Ta, W, Report, AD 407 987, 1 (1963).Google Scholar
16. Haussmann, K., Ternary Alloys, VCH, 8, 305 (1993).Google Scholar
17. Schmid, F.R., Ternary Alloys, VCH, 4, 420 (1991).Google Scholar
18. Akinc, M., Meyer, M.K., Kramer, M.J., Thom, A.J., Huebsch, J.J., and Cook, B., Mat. Sci. Eng. A, 261, 16 (1999).Google Scholar
19. Pettit, F.S. and Meier, G.H., Superalloys, TMS, 651 (1984).Google Scholar
20. Anton, D.L., Shah, D.M., Duhl, D.N. and Giamei, A.F., JOM, 12 (1989).Google Scholar