Hostname: page-component-77c89778f8-m8s7h Total loading time: 0 Render date: 2024-07-18T06:50:13.683Z Has data issue: false hasContentIssue false
  • English
  • Français

Orientation Relationship Between the bcc and σ Phases in Cr-Co Alloys

Published online by Cambridge University Press:  26 February 2011

Toshihiro Doi ,
Makoto Tanimura  and
Yasumasa Koyama
Toshihiro Doi
Affiliation:
doichawan@suou.waseda.jp, Waseda University, Material Science and Engineering, 2-8-26 Nishi-waseda, Shinjyuku-ku, Tokyo, 169-0051, Japan, Tokyo, 169-0051, Japan, +81-3-5286-3789, +81-3-3205-1353
Makoto Tanimura
Affiliation:
tanimura@nissan-arc.co.jp, NISSAN ARC, LTD., Reseach Depertment, 1 Natsushima-cho, Yokosuka, Kanagawa, 237-0061, Japan
Yasumasa Koyama
Affiliation:
ykoyama@waseda.jp, Waseda University, Material Science and Engineering, 2-8-26 Nishi-waseda, Shinjyuku-ku, Tokyo, 169-0051, Japan
Get access

Abstract

To obtain deeper understanding of the Ð structure, the formation of the Ð structure in the (bcc¨bcc+Ð) reaction at 873K and 1173K have been investigated by transmission electron microscopy. As for the orientation relationship between the bcc and Ð structures, as a results, both the common first relation of [110]bcc//[110]Ð and three second relations given by α=0°, 33°, and 64° were found in the 1173K annealing, where α is an angle between the [_110]bcc and [001]Ð directions. In the 873K annealing, on the other hand, there was only one second relation with α=0°. Based on the α=0° relation found in both annealing temperatures, the features of atomic shifts in the Ð-structure formation were also discussed.

Keywords

transmission electron microscopy (TEM)alloycrystallographic structure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 980: Symposium II – Advanced Intermetallic-Based Alloys , 2006 , 0980-II08-04
Copyright
Copyright © Materials Research Society 2007

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

1. Shoemaker, D. P. and Bergman, B. G., J. Amer. Chem. Soc, 72, 5793 (1950).10.1021/ja01168a550Google Scholar
2. Bergman, B. G. and Shoemaker, D. P., Acta. Cryst, 7, 857 (1954).10.1107/S0365110X54002605Google Scholar
3. Kasper, J. S., Decker, B. F. and Belanger, J. R., J. Appl. Phys, 22, 361 (1951)10.1063/1.1699960Google Scholar
4. Kasper, J. S. and Waterstat, R. M., Acta. Cryst, 9, 289 (1956).10.1107/S0365110X56000802Google Scholar
5. Hirata, A., Iwai, A. and Koyama, Y., Phys. Rev. B74, 054204 (2006).10.1103/PhysRevB.74.054204Google Scholar
6. Kitchingman, W. J., Acta. Cryst, A24, 282 (1968).10.1107/S056773946800046XGoogle Scholar
7. Dickins, G. J., Douglas, Auderey M. B. and Taylor, W. H., Acta. Cryst, 9, 297 (1956).10.1107/S0365110X56000826Google Scholar