Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. IV France 06 (1996) C8-97-C8-106
The Snoek Relaxation in Dilute Ternary bcc Alloys. A ReviewH. Numakura and M. Koiwa
Department of Materials Science and Engineering, Kyoto University, Yoshida Hon-Machi, Sakyo-ku, Kyoto 606-01, Japan
The Snoek relaxation due to interstitial solutes in bcc metals is often affected markedly by the presence of a small amount of substitutional solute atoms. This effect is believed to originate from the interaction between the substitutional and interstitial solute atoms, or the s-i interaction. This review summarizes first the experimental observations on the Snoek relaxation in various dilute alloys such as Fe-M-C/N and V/Nb/Ta-M-O/N, and describes next the theoretical studies on the thermodynamics and kinetics of the relaxation. It is suggested from recent studies that careful examinations of the variation of the spectrum with solute concentrations are useful for quantitative characterization of the s-i interaction.
© EDP Sciences 1996