Anisotropy of Grain Boundary Migration Observed in Situ by Synchrotron Radiation

Abstract:

Grain boundary motion was studied in situ at elevated temperatures by x-ray topography using synchrotron radiation. In addition to the position of grain boundary, other crystal defects that may interact with the moving boundary were observed simultaneously. Two types of bicrystals with the [001] rotation axis were selected for the experiments, the first one with a high coincidence S5 misorientation of about 37° and the other one with no coincidence of two crystals for the misorientation of 45°. The geometrical differences between chosen bicrystals are examined and attention is also paid to faceting – local orientations of the boundary plane.

• Periodical: Materials Science Forum (Volumes 467-470)
• Pages: 911-916
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.467-470.911
• Online since: October 2004
• Authors: Vaclav Paidar, Pavel Lejček, M. Polcarová, J. Brádler, Alain Jacques
• Keywords: Bi-Crystal, Grain Boundary Motion, Synchrotron Radiation (XRD), X-Ray Topography

References

[1] Lejcek, P., Paidar, V. and Grabski, M.W.: J. Phys. France 49 (1988), C5_587.

[2] Kadecková, S., Toula, P. and Adámek, J.: J. Crystal Growth 83 (1987), 410.

[3] Polcarová, M., Brádler, J., Jacques, A., Lejcek, P., George, A. and Ferry, O.: J. Phys. D: Appl. Phys. 36 (2003), A98.

[4] Lejcek, P., Paidar, V., Adámek, J. and Kadecková, S.: Interface Sci. 1 (1993), 187.

[5] Tsurekawa, S., Ueda, T., Ichikawa, K., Nakashima, H., Yoshitomi, Y. and Yoshinaga, H.: Mater. Sci. Forum 204-206 (1996), 221.

DOI: 10.4028/www.scientific.net/msf.204-206.221

[6] Lejcek, P., Hofmann, S. and Paidar, V.: Acta Mater. 51 (2003), 3951.

[7] Paidar, V.: Acta Metall. 35 (1987), (2035).

[8] Paidar, V.: Phil. Mag. A 66 (1992), 41.

[9] Aristov, V.Y., Kopetskii, C.V., Molodov, D.A. and Shvindlerman, L.S.: Phys. Solid State 22 (1980), 3247.

[10] Tsurekawa, S. and Nakashima, H.: Mater. Sci. Forum 294-296 (1999), 629.

[11] Gastaldi J., Jourdan C., Grange G.: Phil. Mag. A 57 (1988), 971.

[12] Gottstein, G. and Shvindlerman, L.S.: Grain Boundary Migration in Metals: Thermodynamics, Kinetics, Applications (CRC Press, Boca Raton, 1999).

DOI: 10.1201/9781420054361