Strain-rate cycling tests during the Blaha effect measurement were carried out at 80 to 240K for two kinds of single crystals: quenched and stored specimens of KCl:Sr2+ (0.050 mol% in the melt). The plots of the strain-rate sensitivity of flow stress and stress decrement had two bending points and two plateau places for both the specimens. On the basis of the relative curve of strain-rate sensitivity and stress decrement, it was found that the effective stress due to impurities for the stored specimen is smaller than that for the quenched specimen within the temperature.
moving dislocation
plastic deformation
effective stress due to impurities
strain-rate cycling tests
ultrasonic oscillation