Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-25T15:49:18.206Z Has data issue: false hasContentIssue false
  • English
  • Français

Characterization of Deformation Structures in B2 CoAL

Published online by Cambridge University Press:  22 February 2011

M. A. Crimp  and
Y. Zhang
M. A. Crimp
Affiliation:
Michigan State University, Department of Materials Science and Mechanics, East Lansing, MI 48824–1226
Y. Zhang
Affiliation:
Michigan State University, Department of Materials Science and Mechanics, East Lansing, MI 48824–1226
Get access

Abstract

B2 CoAl single crystals with a number of orientations have been deformed at 1300 K and 1000 K. The deformation substructures have been characterized using TEM diffraction contrast techniques supported by image simulations. While <100> slip is found to be the predominant slip mode at these temperatures, <111> and <110> dislocations have also been observed. In particular, in hard orientations <110> dislocations appear to play an active role in initiating the deformation. Additionally, <110> dislocations are often observed as junctions of <100> type dislocations. Under the conditions tested, changes in alloy stoichiometry do not result in any modifications to the dislocation slip behavior.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 53
Copyright
Copyright © Materials Research Society 1995

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

1. High-Temperature Ordered Inter metallic Alloys V, edited by Baker, I., Darolia, R., Whittenberger, J.D. and Yoo, M.H., Mater. Res. Soc. Proc., 288 (1993).Google Scholar
2. Hocking, L.A., Strutt, P.R., and Dodd, R.A., J. of Int. Met., 99, 98 (1971).Google Scholar
3. Whittenberger, J.D., Mat. Sci. and Eng., 73, 87 (1985).Google Scholar
4. Whittenberger, J.D., Mat. Sci. and Eng., 85, 91 (1987).Google Scholar
5. Miracle, D.B., Acta Met. Mater., 39, 1457 (1991).Google Scholar
6. Umakoshi, Y. and Yamaguchi, M., Phil. Mag. A, 44, 711 (1980).Google Scholar
7. Mendiratta, M.G., Kim, H.M., and Lipsitt, H.A., Met. Trans, 15A, 395 (1984).Google Scholar
8. Crimp, M.A. and Vedula, K., Phil. Mag. A, 63, 559 (1991).Google Scholar
9. Munroe, P.R. and Baker, I., J. Mat. Sci, 24, 4246 (1989).Google Scholar
10. Yaney, D.L., Pelton, A.R. and Nix, W.D., J. Mat. Sci., 21, 2083 (1986).Google Scholar
11. Yaney, D.L. and Nix, W.D., J. Mat. Sci., 23, 3088 (1988).Google Scholar
12. Drelles, C.J., M.S. Thesis, Michigan Technological Univ., (1985).Google Scholar
13. Zhang, Y., Tonn, S.C. and Crimp, M.A., High-Temperature Ordered Intermetallic Alloys V, edited by Baker, I., Darolia, R., Whittenberger, J.D. and Yoo, M.H., Mater. Res. Soc. Proc., 288, 379 (1993).Google Scholar
14. Head, A.K., Humble, P., Clarebrough, L.M., Morton, A.J., and Forwood, C.T., Defects in Crystal Solids, edited by Amelinckx, S., North-Holland, (1973).Google Scholar
15. Zhang, Y., Ph.D. Dissertation, Michigan State University (1995).Google Scholar
16. Mills, M.J. and Miracle, D.B., Acta Metall. Mater., 41, 85 (1993).Google Scholar
17. Forbes, K.R., Glatzel, U., Darolia, R., and Nix, W.D., High-Temperature Ordered Intermetallic Alloys V, edited by Baker, I., Darolia, R., Whittenberger, J.D. and Yoo, M.H., Mater. Res. Soc. Proc., 288, 45 (1993).Google Scholar