Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-29T08:50:32.874Z Has data issue: false hasContentIssue false
  • English
  • Français

Mechanical Properties and Structure of Cubic (Al,Cr)3 Ti Alloys

Published online by Cambridge University Press:  22 February 2011

J. P. Nic  and
D. E. Mikkola
J. P. Nic
Affiliation:
Dept. Metallurgical & Materials Engineering, Michigan Technological University, Houghton, MI 49931.
D. E. Mikkola
Affiliation:
Dept. Metallurgical & Materials Engineering, Michigan Technological University, Houghton, MI 49931.
Get access

Abstract

Single phase LI2 (Al,Cr)3Ti alloys show no anomalous strengthening at intermediate temperatures, but the strength rises rapidly at low temperatures. It is likely that a transition from SISF to APB superdislocation dissociation occurs with increasing temperature based on the more rapid decrease in APB energy compared to SISF energy because of entropy considerations. High strain hardening rates are suggested to arise in large part from the formation of large numbers of dipoles. Calculations of interaction forces illustrate the complexity of superdislocation interactions and provide a reasonable mechanism for initiating cross slip.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 1227
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. Mikkola, D.E., Nic, J.P., Zhang, S. and Milligan, W.W., ISIJ Internat. 31, 1076 (1991).Google Scholar
2. Zhang, S., Nic, J.P. and Mikkola, D.E., Scripta Met. et Mater. 24, 57 (1990).Google Scholar
3. Morris, D.G., J. Mater. Res. 7, 303 (1992).Google Scholar
4. Zhang, S., PhD thesis, Michigan Technological University, 1993.Google Scholar
5. Miura, Y. and Watanabe, N., Scripta Met. et Mater. 29, 139 (1993).Google Scholar
6. Wu, Z.L., Pope, D.P. and Vitek, V., Phil. Mag. A 70, 171 (1994).Google Scholar
7. Potez, L., Loiseau, A., Naka, S. and Lapasset, G., J. Mater. Res. 7, 876 (1992).Google Scholar
8. Paidar, V., Yamaguchi, M., Pope, D.P. and Vitek, V., Phil. Mag. A 45, 883 (1982).Google Scholar
9. Zhang, S., Mikkola, D.E. and Milligan, W.W., Scripta Met. et Mater. 27, 1073 (1992).Google Scholar
10. Cottrell, A.H., Dislocations and Plastic Flow in Crystals, (Oxford University Press, 1953) p. 46.Google Scholar
11. Sadananda, K. and Marcinkowski, M.J., J. Mater. Sci. 8, 839 (1973).Google Scholar