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The Effect of Boron on Microhardness in Ni3 Al Polycrystals

Published online by Cambridge University Press:  26 February 2011

X. R. Qian  and
Y. T. Chou
X. R. Qian
Affiliation:
Department of Materials Science and Engineering and Materials Research Center Lehigh University Bethlehem, PA 18015 U.S.A.
Y. T. Chou
Affiliation:
Department of Materials Science and Engineering and Materials Research Center Lehigh University Bethlehem, PA 18015 U.S.A.
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Abstract

In a recent MRS symposium, the effect of boron on grain boundary hardness (GBH) in Ni3Al was reported. Addition of 0.2 at.% of boron decreased the GBH in all three sets of alloys tested (24, 25, and 26 at.% Al). The present paper summarizes the study of the effect of boron on hardness within grains. Boron-induced softening was again observed in grain interiors. However, it occurred only in alloys with 24 and 25 at.% Al, but not in the alloy with 26 at.% Al. An explanation for this behavior is presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 133: Symposium H – High-Temperature Ordered Intermetallic Alloys III , 1988 , 529
Copyright
Copyright © Materials Research Society 1989

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References

REFERENCES

1. Liu, C. T., White, C. L. and Horton, J. A., Acta Metall. 33, 213 (1985).Google Scholar
2. Huang, S. C., Taub, A. I. and Chang, K. M., Acta Metall. 32, 1703 (1984).CrossRefGoogle Scholar
3. Baker, I., Huang, B. and Schulson, E. M., Acta Metall. 36, 493 (1988).Google Scholar
4. Schulson, E. M., Weihs, T. P., Baker, I. and Frost, H. J., Acta Metall. 34, 1395 (1986).Google Scholar
5. Qian, X. R. and Chou, Y. T., Materials Lett. 6, 157 (1988), Scripta Metall. 22, 725 (1988).Google Scholar
6. Qian, X. R. and Chou, Y. T., Proc. of the MRS Symposium on Interfacial Structure, Properties, and Design, Yoo, M. H., Briant, C. L. and Clark, W. A. T., eds., Materials Society, Press, Pittsburgh, 1988.Google Scholar
7. Pink, E. and Arsenault, R. J., Progr. Mater. Sci. 24, 1 (1979).Google Scholar
8. Guard, R. W. and Westbrook, J. H., Trans. AIME 215, 807 (1959).Google Scholar
9. Pope, D. P. and Ezz, S. S.. Int. Metall. Rev. 29, 136 (1984).Google Scholar
10. Gilman, J. J., J. Appl. Phys. 36, 3195 (1965).CrossRefGoogle Scholar
11. Yoo, M. H., in Proc. of the MRS Symposium on High Temperature Ordered Intermetallic Alloys II, Stoloff, N. S., Koch, C. C., Liu, C. T. and Izumi, O., eds., Materials Society Press, Pittsburgh, 1987, p. 207,Google Scholar
12. Christ, B. W.. Acta Metall. 17, 17 (1969).Google Scholar
13. Nakada, Y. and Keh, A. S., Acta Metall. 16, 903 (1968).Google Scholar
14. Dasqupta, A., Smedskjaer, L. C., Legniki, D. G. and Siegel, R. W., Mater. Lett. 3, 457 (1985).Google Scholar