Estimation of the effective growth rate of a plate of bainitic ferrite in dynamic theory

Abstract

The growth of a bainite plate is considered to be a relay-type process, in which fast (with τg ∼ 10-10 s) acts of the formation of sublaths (with a width 3d ∼ 1 μm, where d is the thickness of the sublath) occur in an ultrasonic regime and the successive acts are separated by pauses of length τp ∼ 10-2 s. The value τp corresponds to the time of diffusion on a scale d with allowance for the pipe diffusion. The effective growth rate of the plate of bainite ferrite v eff is estimated by the relationship 3d/τp. © 2013 Pleiades Publishing, Ltd.