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Weldability of Ni3Al-Type Aluminide Alloys*

Published online by Cambridge University Press:  21 February 2011

M. L. Santella ,
S. A. David  and
C. L. White
M. L. Santella
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, P. 0. Box X, Oak Ridge, TN 37831
S. A. David
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, P. 0. Box X, Oak Ridge, TN 37831
C. L. White
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, P. 0. Box X, Oak Ridge, TN 37831
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Abstract

If the ductile Ni3Al-based aluminides are to achieve their full potential as engineering materials, they must demonstrate a capability for being joined by conventional welding processes. The goal of this study was to identify some of the factors controllinq weldability of the ductile aluminides. The alloys selected for this initial study were boron-doped Ni3 Al and Ni3 Al containing 10 at. % Fe. Sheet stock was used to make full penetration autoqenous welds by the electron beam and gas tungsten arc processes. The main process variables were travel speed and preheat. The aswelded coupons were examined visually and by normal metalloqraphic methods. Although sound welds were made, initial results indicated weldments of these alloys are susceptible to cracking. Weldability of the ductile Ni3Al-based aluminides was found to be affected by alloy composition and welding speed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 39: Symposium G – High-Temperature Ordered Intermetallic Alloys I , 1984 , 495
Copyright
Copyright © Materials Research Society 1985

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Footnotes

*

*Research sponsored by the U.S. Department of Energy, AR&TD Fossil Energy Materials Program and the Office of Energy Utilization Research, Energy Conversion and Utilization Technologies (ECUT) Program under contract DE-ACO5-840R21400 with Martin Marietta Energy Systems, Inc.

References

REFERENCES

1 Aoki, K. and Izumi, O., Nippon Kinzaku Gakkaishi 43, 1190 (1979).Google Scholar
2 Liu, C. T., White, C. L., Koch, C. C., and Lee, E. H., Proceedings of the Symposium on High Temperature Materials Chemistry - II, ed. by Munir, Z. A. and Cubicciotti, D. (The Electrochemical Society, Inc., 1983) Vol.83(7): 32.Google Scholar
3 David, S. A., Jemian, W. A., Liu, C. T., and Horton, J. A., Weld. J. 64(1): 22-s–28-s(1985).Google Scholar
4 Owczarski, W. A., Proceedings of a Symposium on Effects of Minor Elements on the Weldability of High-Nickel Alloys, ed. by MacPherson, B. M. (Welding Research Council 1969), p. 6.Google Scholar
5 Pepe, J. J. and Savage, W. F., Weld. J. 46(9): 422–s (1967).Google Scholar
6 . Liu, C. T., White, C. L., and Horton, J. A., to be published in Acta. Met.Google Scholar
7 . Rivlin, V. G. and Raynor, G. V., Int. Met. Rev., 25(3): 79 (1980).Google Scholar
8 Grala, E. M., Mechanical Properties of Intermetallic Compounds, ed. By Westbrook, J. H. (Wiley 1960), p. 358.Google Scholar
9 Yeniscavich, W., Proceedings of a Symposium on Methods of High-Alloy Weldability Evaluation, (Welding Research Council 1970), p. 2.Google Scholar
10 Masubuchi, K., Analysis of Welded Structures, (Pergamon Press Ltd. 1980).Google Scholar
11 Kou, S. and Lee, Y., Met. Trans. A, 14A, 2245 (1983).CrossRefGoogle Scholar