Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-27T17:16:53.268Z Has data issue: false hasContentIssue false
  • English
  • Français

Robustness versus Performance Assessment for Different Gamma-TiAl Processing Routes

Published online by Cambridge University Press:  09 February 2011

Marc Thomas
Marc Thomas*
Affiliation:
ONERA-DMSM, 29 avenue de la Division Leclerc, BP72, 92322 Châtillon, France
Get access

Abstract

One of the main driving force for the development of advanced structural materials is weight saving especially in the transportation industry in order to reduce CO2 emission. The utilization of gamma aluminides, as good candidates for aerospace applications, is strongly related to the development of a cost-effective and robust processing route, as far as possible. It is well established that the processing route, i.e. cast, wrought or PM, has a dramatic effect on the microstructure and texture of gamma-TiAl alloys. Therefore, significant microstructural variations through post-heat treatments coupled with compositional modifications can only guarantee a proper balance of desired properties. However, a number of metallurgical factors during the processing steps can contribute to some scattering in properties. This review will highlight several critical process variables in terms of the resulting g-TiAl microstructures. Of primary importance is the as-cast texture which is difficult to control and may contribute to prefer some alternative processing routes to ensure a better repeatability in mechanical results. Some innovative processing techniques for controlling the structure will then be presented. The main point which will be discussed in this paper is whether an approach leading to a robust process would not be at the expense of the high performance of the structural material.

Keywords

powder processingtexturemicrostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1295: Symposium N – Intermetallic-Based Alloys for Structural and Functional Applications , 2011 , mrsf10-1295-n04-01
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. Schafrik, R.E. in Structural Intermetallics 2001, edited by Hemker, K.J., Dimiduk, D.M., Clemens, H., Darolia, R., Inui, H., Larsen, J.M., Sikka, V.K., Thomas, M. and Whittenberger, J.D., TMS 2001, pp. 13–17.Google Scholar
2. Tetsui, T., presented at the 3rd International Workshop on Gamma-TiAl Technologies, Bamberg, Germany, 2006 (unpublished)Google Scholar
3. Huang, S.C., McKee, D.W., Shih, D.S. and Chesnutt, J.C., in Intermetallic Compounds: Structure and Mechanical Properties, edited by Izumi, O. (Sendai, Japan: The Japan Institute of Metals, 1991) pp. 363–370.Google Scholar
4. Yamaguchi, M., and Inui, H. in Structural Intermetallics 1993, edited by Darolia, R., Lewandowski, J.J., Liu, C.T., Martin, P.L., Miracle, D.B., and Nathal, M.V., (The Minerals, Metals & Materials Society, 1993) pp. 127–142.Google Scholar
5. Biery, N., De Graef, M., Beuth, J., Raban, R., Elliott, A., Austin, C., and Pollock, T.M., Metall. Mater. Trans. A, 33A, 3127 (2002).Google Scholar
6. Rishel, L.L., Pollock, T.M., Cramb, A.W. and Larsen, D.E. in International Symposium on Liquid Metal Processing and Casting, Feb. 1997, pp. 214–225.Google Scholar
7. Kuang, J.P., Harding, R.A., Campbell, J., Int. J. Cast Metals Res., 13, 125 (2000).Google Scholar
8. Liu, C.T., Schneibel, J.H., Maziasz, P.J., Wright, J.L., Easton, D.S., Intermetallics, 4(6), 429 (1996).Google Scholar
9. Wallgram, W., Schmölzer, T., Cha, L., Das, G., Güther, V., Clemens, H., Int. J. Mat. Res. 08, 1021 (2009).Google Scholar
10. Berteaux, O., Popoff, F., Thomas, M., Met. Trans. A, 39A (10), 2281 (2008).Google Scholar
11. Munir, Z.A., Anselmi-Tamburini, U., and Ohyanag, M., J. Mater. Sci.., 44, 763 (2006).Google Scholar
12. Couret, A., Molenat, G., Galy, J., Thomas, M., Intermetallics., 16 (9), 1134 (2008).Google Scholar
13. Calderon, H.A., Garibay-Febles, V., Umemoto, M., Yamaguchi, M.., Mater. Sci. and Eng. A., 329–331, 196 (2002).Google Scholar
14. Vilaro, T., Kottmann-Rexerodt, V., Thomas, M., Bertrand, P., Thivillon, L., Colin, C., Abed, S., Ji, V., Aubry, P., Malot, T., Peyre, P., Adv. Mater. Res.., 89–91, 586 (2010).Google Scholar