Hostname: page-component-76c49bb84f-65mhm Total loading time: 0 Render date: 2025-07-09T18:04:16.535Z Has data issue: false hasContentIssue false
  • English
  • Français

Influence of rare earth element additions on phase transformations in the Zn−27% Al alloy

Published online by Cambridge University Press:  03 March 2011

Yao Hua Zhu  and
Frank E. Goodwin
Yao Hua Zhu
Affiliation:
Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico
Frank E. Goodwin
Affiliation:
International Lead Zinc Research Organization, Inc., Research Triangle Park, North Carolina 27709-2036
Get access

Abstract

Rare earth additions of 3 wt. % were added to the Zn−27% Al−2% Cu−0.02% Mg alloy, known as ZA-27. The as-cast microstructure of this alloy consisted of two phases of supersaturated face-centered cubic β′s and α′s together with a hexagonal close-packed rare-earth-containing zinc-rich phase termed E phase. The phase transformations in this alloy after aging at 100 °C and 200 °C were determined. The E phase was determined to have the lattice parameters a0 = 9.0348 Å and c0 = 13.2194 Å, giving c0/a0 = 1.4632. The chemical formula of the E phase was determined to be RE1Zn10.9Cu0.8. The addition of 3% rare earths into ZA-27 delayed the phase transformations of this alloy. This was caused by an increase in the aluminum content of the supersaturated β′s phase.

Information

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 12 , December 1993 , pp. 3043 - 3049
Copyright
Copyright © Materials Research Society 1993

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.)

Article purchase

Temporarily unavailable

References

REFERENCES

1Anderson, E. A. and Werley, G. L., Zamak Alloys for Zinc Alloy Die Casting (The New Jersey Zinc Company, 1946).Google Scholar
2Zhu, Y. H., Ph.D. Thesis, University of Aston, Birmingham, U.K. (1983).Google Scholar
3Zhu, Y. H. and Murphy, S., Chin. J. Met. Sci. Technol. 3, 261–269 (1987).Google Scholar
4Zhu, Y. H., Chin. J. Met. Sci. Technol. 6, 125–131 (1990).Google Scholar
5Zhu, Y. H., Savanskan, T., and Murphy, S., in Phase Transformations in Solids, edited by Tsakalakos, T. (Mater. Res. Soc. Symp. Proc. 21, Elsevier Science Publishing Co., Inc., New York, 1984), pp. 835–840.Google Scholar
6Mykura, N., Murphy, S., and Zhu, Y. H., in Phase Transformations in Solids, edited by Tsakalakos, T. (Mater. Res. Soc. Symp. Proc. 21, Elsevier Science Publishing Co., Inc., New York, 1984), pp. 841–846.Google Scholar
7Zhu, Y. H. and Murphy, S., Proc. 4th Int. Conf. on Heat Treatment of Materials (1986), pp. 367–377.Google Scholar
8Zhu, Y. H. and Murphy, S., Chin. J. Met. Sci. Technol. 2, 105–116 (1986).Google Scholar
9“Uses of Rare Earths & Alloys in Metallurgy, No. 2,” in Non-Ferrous Materials Met. A. 7795–4150280, edited November 1976, 67,780.Google Scholar
10Zhu, Y. H., Yan, B., and Torres, G., “Phase Transformations of Zn-Al Based Alloy Containing Small Amounts of Rare Earth Elements,” to be published in CIM Annual Conference (1992).Google Scholar
11Zhu, Y. H., Yan, B., and Huang, W., Proc. Int. Symp. on Zinc-Aluminum (ZA) Casting Alloys, edited by Lewis, G. P., Barnhurst, R. J., and Loong, C. A., Toronto, Canada, CIM (1986), pp. 23–33.Google Scholar
12Ciach, R., Dukiet-Zawedaka, B., and Ciach, T. D., J. Mater. Sci. 13, 2676–2686 (1978).CrossRefGoogle Scholar
13Simerska, M. and Synecek, Y., Acta Metall. 15, 233 (1967).CrossRefGoogle Scholar
14Carpenter, G. J. C. and Garwood, R. J., Metall. Sci. 1, 202 (1967).CrossRefGoogle Scholar