Hostname: page-component-77c89778f8-sh8wx Total loading time: 0 Render date: 2024-07-20T09:26:09.785Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of prestress on tensile yield strength of a Ni3Al alloy

Published online by Cambridge University Press:  31 January 2011

M. H. Yoo  and
C. T. Liu
M. H. Yoo
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6115
C. T. Liu
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6115
Get access

Abstract

An experimental technique of prestressing and quenching was employed in order to elucidate the nature of pinning points responsible for the anomalous yield strength of Ni3Al. The apparent number density of pinning points at room temperature was found to be unaffected by the prestressing and quenching from elevated temperatures. This result is consistent with the crossslip-pinning (CSP) model in that cross-slipped segments act as pinning points on the leading superpartial dislocations.

Type
Articles
Information
Journal of Materials Research , Volume 3 , Issue 5 , October 1988 , pp. 845 - 847
Copyright
Copyright © Materials Research Society 1988

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

1Proceedings of the MRS Symposium on High-Temperature Ordered Intermetallic Alloys, edited by Koch, C. C., Liu, C. T., and Stoloff, N. S. (Materials Research Society, Pittsburgh, PA, 1985).Google Scholar
2Proceedings of the MRS Symposium on High-Temperature Ordered Intermetallic Alloys II, edited by Stoloff, N. S., Koch, C. C., Liu, C. T., and Izumi, O. (Materials Research Society, Pittsburgh, PA, 1987).Google Scholar
3Pope, D. P. and Ezz, S. S., Int. Metall. Rev. 29, 136 (1984).CrossRefGoogle Scholar
4Takeuchi, S. and Kuramoto, E., Acta Metall. 21, 415 (1973).CrossRefGoogle Scholar
5Lall, C., Chin, S., and Pope, D. P., Metall. Trans. A 10, 1323 (1979).CrossRefGoogle Scholar
6Paidar, V., Pope, D. P., and Vitek, V., Acta Metall. 32, 435 (1984).CrossRefGoogle Scholar
7Yoo, M. H., Scr. Metall. 20, 915 (1986).Google Scholar
8Yamaguchi, M., Paidar, V., Pope, D. P., and Vitek, V., Philos. Mag. A 45, 867 (1982).CrossRefGoogle Scholar
9Baker, I., Horton, J. A., Schulson, E. M., Philos. Mag. Lett. 55, 3 (1987).Google Scholar
10Veyssiere, P., Horton, J. A., Yoo, M. H., and Liu, C. T., Philos. Mag. Lett. 56, 17 (1988).CrossRefGoogle Scholar
11Korner, A., University of Vienna, Austria (private communication).Google Scholar
12Kear, B. H. and Wilsdorf, H.G.F., Trans. AIME 224, 382 (1962).Google Scholar
13Takeyama, M. and Liu, C. T., Acta Metall., in print (1987).Google Scholar
14Liu, C. T., White, C. L., and Lee, E. H., Scr. Metall. 19, 1247 (1985).Google Scholar
15Liu, C. T. and White, C. L., Acta Metall. 35, 643 (1987).CrossRefGoogle Scholar
16Taub, A. I., Chang, K. M., and Liu, C. T., Scr. Metall. 20, 1613 (1986).Google Scholar
17Yoo, M. H., Horton, J. A., and Liu, C. T., Acta Metall. (1988) (to be published).Google Scholar