Abstract
Microcinematography using a high speed film camera was applied in studying slip band development on n-irradiated Cu crystals during deformation in the yield region at room temperature. Particulars of taking the films and evaluating them photometrically are reported and limits of resloution are discussed. Measured quantities taken from the films ara the formation times of slip band clusters in the Lüders band, of single slip bands within clusters, and of slip lamellae within slip bands, further the characteristic times for “microscopic” and macroscopic cross slip, as well as the growth rate in length of slip bands. The measured data suggest that in addition to dislocation cutting through irradiation produced obstacles and cross slip processes the local constraints and work hardening play an important part in initiation, development, and termination of slip in the bands. Conclusions concerning the active crystal length and the thermal activation analysis are discussed.
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