Abstract

The reduction of the plasticity of carbon steel under conditions of static and dynamic elongation obeys the fundamental kinetic law of strain aging and consequently is caused by the diffusion of impurity atoms (C and N2) to dislocations and the resulting pinning of dislocations by formation of Cottrell atmospheres. The dislocation density for dynamic loading in the temperature range of reduced plasticity proves to be one to one and one-half orders higher than for static loading.

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