Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-05T13:27:02.415Z Has data issue: false hasContentIssue false

Microstructure and Deformation of Rapidly Solidified TiAl Alloys

Published online by Cambridge University Press:  26 February 2011

Shyh-Chin Huang
Affiliation:
General Electric Corporate Research and Development Center, P.O. Box 8, Schenectady, NY 12301
Ernest L. Hall
Affiliation:
General Electric Corporate Research and Development Center, P.O. Box 8, Schenectady, NY 12301
Get access

Abstract

Binary TiAl alloys containing 45–60 at.% Al were studied in detail in order to understand the fundamental deformation behavior and to establish a guideline for advanced alloy design. Because the formation of this compound involves a peritectic reaction, all alloys were processed by the melt spinning technique to minimize segregation. Microstructural and mechanical characterizations were carried out on both the as-solidified and consolidated materials. The results are presented to address the issues of (1) the equilibrium phase relationship, (2) the rapid solidification microstructure, (3) the room temperature deformation behavior, (4) the brittle/ductile transition, (5) the temperature dependence of yield stress, and (6) the implication on alloying effects. Several examples of ternary alloys are given.

Type
Research Article
Copyright
Copyright © Materials Research Society 1989

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] Lipsitt, H.A., in High-Temperature Ordered Intermetallic Alloys, Materials Research Society Symposia Proceedings, Vol.39, ed. Koch, C.C., Liu, C.T. and Stoloff, N.S., published by Materials Research Society, Pittsburgh, Pennsylvania, 1985, pp. 351364.Google Scholar
[2] McAndrew, J.B. and Kessler, H.D., J. Metals, 8 (1956), p. 1348.Google Scholar
[3] Marcinkowskli, M.J., Brown, N., and Fischer, R.M., Acta Metall., 9 (1961), p. 129.Google Scholar
[4] Greenberg, B.A., Phys. Sta. Sol., 42 (1970), p. 459.Google Scholar
[5] Greenberg, B.A., Phys. Sta. Sol., B55 (1973), p. 59.Google Scholar
[6] Shechtman, D., Blackburn, M.J., and Lipsitt, H.A., Metall. Trans., 5 (1974), p. 1373.CrossRefGoogle Scholar
[7] Lipsitt, H.A., Shechtman, D., and Schafrik, R.E., Metall. Trans., 6A (1975), p. 1991.CrossRefGoogle Scholar
[8] Kawabata, T., Kanai, T., and Izumi, O., Acta Metall., 33 (1985), p.1355.Google Scholar
[9] Hug, G., Loiseau, A., and Lasalmonie, A., Phil. Mag., 54A (1986), p. 47.Google Scholar
[10] Duwez, P. and Taylor, J.L., Trans. AIME, 196 (1952), p. 70.Google Scholar
[11] Huang, S.C., Hall, E.L., and Gigliotti, M.F.X., In High-Temperature Ordered Intermetallic Alloys II, Materials Research Society Symposia Proceedings, Vol.81, ed. Stoloff, N.S., Koch, C.C., Liu, C.T., and Izumi, O., Published by Materials Research Society, Pittsburgh, Pennsylvania, 1987, pp. 481486.Google Scholar
[12] Huang, S.C., Hall, E.L., and Gigliotti, M.F.X.: to be published in Proc. Sixth World Conf. on Titanium, Cannes, June 6–9, 1988.Google Scholar
[13] Hall, E.L. and Huang, S.C.: to be published in J. Mat. Res., 1989.Google Scholar
[14] Rowe, R.G. and Amato, R.A., in Structural Metals by Rapid Solidification, ed. Froes, F.H. and Savage, S.J., published by American Society for Metals, Metals Park, PA, pp. 253260.Google Scholar
[15] Ogden, H.R., Maykuth, D.J., Finlay, W.L., and Jaffee, R.I., Trans. AIME, 195 (1951), p. 1150.Google Scholar
[16] Banerjee, D., Krishnan, R.V., and Vasu, K.I., Metall. Trans. A, 11A (1980), p. 1095.CrossRefGoogle Scholar
[17] Ence, E. and Margolin, H., Trans. AIME, 221 (1961), p. 151.Google Scholar
[18] Sato, T. and Huang, Y.-C., Trans. Jpn. Inst. Metals, 1 (1960), p. 22.Google Scholar
[19] Valencia, J.J., McCullough, C., Levi, C.G., and Mehrabian, R., Scripta Metall., 21 (1987), p. 1341.Google Scholar
[20] Bumps, E.S., Kessler, H.D., and Hansen, M., Trans. AIME, 196 (1952), p. 609.Google Scholar
[21] Collings, E.W., Metall. Trans. A, 10A (1979), p. 463.Google Scholar
[22] Murray, J.L., Metall. Trans. A, 19A (1988), p. 243.Google Scholar
[23] Huang, S.C. and Siemers, P.A., submitted to Metall. Trans.Google Scholar
[24] Kawabata, T. and Izumi, O., Phil. Mag. A, 55 (1987), p. 823.CrossRefGoogle Scholar
[25] Hug, G., Loiseau, A., and Veyssiere, P., Phil. Mag. A, 57 (1988), p. 499.CrossRefGoogle Scholar
[26] Huang, S.C., to be published in Scripta Metall.Google Scholar
[27] Hall, E.L. and Huang, S.C., these proceedings.Google Scholar
[28] Tsujimoto, T., Titanium and Zirconium, 33 (1985), p. 159.Google Scholar
[29] Vujic, D., Li, Z., and Whang, S.H., Metall. Trans. A, 19A (1988), p. 2445.Google Scholar
[30] Sastry, S.M.L. and Lipsitt, H.A., in Titanium 80, published by American Society for Metals, Warrendale, PA, 1980, pp. 12311243.Google Scholar
[31] Martin, P.L., Lipsitt, H.A., Nuhfer, N.T., and Williams, J.C., in Titanium 80, published by American Society for Metals, Warrendale, PA, 1980, pp. 12451254.Google Scholar