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Dynamic Restoration Mechanism of a Fe3Al Based Alloy During Elevated Temperature Deformation

Published online by Cambridge University Press:  22 February 2011

Mingwei Chen ,
Aidang Shan  and
Dongliang Lin
Mingwei Chen
Affiliation:
Department of Materials Science Shanghai Jiao Tong University, Shanghai 200030, P. R. China
Aidang Shan
Affiliation:
Department of Materials Science Shanghai Jiao Tong University, Shanghai 200030, P. R. China
Dongliang Lin
Affiliation:
Department of Materials Science Shanghai Jiao Tong University, Shanghai 200030, P. R. China
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Abstract

By TEM and metallographic examination, we found that dynamic recovery and following continuous recrystallization, which connects with the elevated temperature ductility, takes place in a Fe3Al based alloy during elevated temperature deformation. Dynamic restoration consists of the following process: (1) by climbing or cross-slipping, glide dislocations change into dislocation arrays, (2) the dislocation array attracts lattice dislocations, (3) with increasing dislocation density, a non-equilibrium subboundary forms, which is easy to migrate, slide or rotate under external force, and (4) when the misorientation angle of the subboundary increases to a critical value, the subboundary changes into a grain boundary with continuous misfit. By relaxation, the boundary then changes into a grain boundary consisting of periodical structure units.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 255
Copyright
Copyright © Materials Research Society 1995

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References

1. McKamey, C. G., Maziasz, P. J., Goodwin, G. M., and Zacharia, T., Mater. Sci. Eng. 174A, 59 (1994).Google Scholar
2. Shan, A., Chen, M., and Lin, T. L., ICSAM, Moscow, 5 (1994).Google Scholar
3. Hanada, S., Sato, T., Watanabe, S., and Izumi, O., J. Japan Inst. Metals 12, 1285 (1981).Google Scholar
4. Bricknel, R. H. and Edington, J. W., Metall. Trans. 10A, 1257 (1979).Google Scholar
5. Nes, E., Metal Sci. 13, 211 (1979).Google Scholar
6. Gudmundsson, H., Brooks, D., and Wert, J. A., Acta. Metall. Mater. 39, 19 (1991).Google Scholar