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Phase Equilibria at 1173K in the Ni-Ti-Al System

Published online by Cambridge University Press:  15 February 2011

W.W. Liang  and
P. Nash
W.W. Liang*
Affiliation:
Gas Research Institute, 8600 West Bryn Mawr Avenue, Chicago, Illinois
P. Nash*
Affiliation:
Gas Research Institute, 8600 West Bryn Mawr Avenue, Chicago, Illinois
*
*Illinois Institute of Technology, Metallurgical and Materials Engineering Department, 10 West 33rd Street, Chicago, Illinois.
1 Work performed whilst at Standard Oil Company (Indiana) Amoco Research Center, P.O. Box 400, Naperville, Illinois.
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Abstract

In a recent review of the published literature on this system it was concluded that there is a lack of experimental data in this system particularly in regions of the system with less than 75 atomic per cent of each one of the components (1). In order to provide some consistent data over a substantial range of composition an experimental determination of the phase equilibria at 1173K and from 0–50 atomic % Al is being carried out. The main experimental technique being used is quantitative electron microprobe analysis (JEOL 733) by wavelength dispersive x-ray spectrometry. In addition, x-ray diffraction is being used to establish the structures of phases present and optical metallography of cast structures to determine the fields of primary crystallization. In addition to establishing the phase equilibria at this temperature the composition range for the existence of the AlNi2Ti phase is being determined. The results thus far are compared with previous experimental data and calculated isothermal sections (2).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 19: Symposium E – Alloy Phase Diagrams , 1982 , 399
Copyright
Copyright © Materials Research Society 1983

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References

REFERENCES

1. Nash, P., Vejins, V., Liang, W.W., Calphad XI, Argonne National Laboratory May 10-16, 1982, also to be published in Bulletin of Alloy Phase Diagrams.Google Scholar
2. Kaufman, L., Nesor, H., Met. Trans. 5, 1623, 1974.Google Scholar
3. Whittenberger, J.D., 'COSAM Program Overview' NASA TM–83006 P. 163, 1982.Google Scholar
4. Ya. Markiv, V., Burnashova, V.V., Ryabov, V.R., Akad. Nauk. Ukrain RSR, Metallofizika 46, 103, 1973.Google Scholar
5. Taylor, A., Floyd, R.W., J. Inst. Metals 81, 25, 1952/1953.Google Scholar