Steels: allotriomorphic & idiomorphic ferrite. Lecture 6 of 12
Channel: bhadeshia123
Date: 28/09/2020

The kinetics and mechanism of the allotriomorphic ferrite transformation is described for binary Fe-C alloys, with a brief discussion of idiomorphic ferrite. The thickness of ferrite is shown to increase with the square root of time, i.e., growth slows down as the ferrite thickens. This is because of the accumulation of carbon ahead of the transformation front. 

Associated teaching materials can be found on:
http://www.phase-trans.msm.cam.ac.uk/teaching.html
H. K. D. H. Bhadeshia