SIMULATION OF DISLOCATION DAMPING SPECTRA ASSOCIATED WITH THE COLLECTIVE MOTION OF POINT DEFECTS AND KINK CHAIN SUBJECTED TO THE BULK SEGREGATION

Tarik O. OGURTANI, M. Rauf GUNGOR , and Ersin Emre OREN
Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara 06531, Turkey

A new and more sophisticated theory is presented by the mathematical modeling of an interactive and completely coupled systems of dislocations and mobile point defects, such as that the computer simulation of which yields extremely accurate prediction of experimental spectral data in terms of Induced Cottrell Relaxation and its gradual conversion into a Cottrell-Koster Relaxation peak at high concentrations of spherical point defect. An allowance also has been made to take into account the bulk segregation of point defects to the kinked- dislocation line that results excellent computer animation of aging, peaking and finally the stabilization behavior of transient dislocation damping peaks.