Abstract
A model of ausferrite growth in ADI was developed together with a simulation program. Their application enables tracing of the process of ausferrite growth, i.e. of the high-carbon ferrite in austenite. The model was based on a transient diffusion growth of ferrite lamellae in austenite under the boundary conditions proper for the austempering temperature and allowing for the function of ferrite nucleation. The results of the simulation were compared with the data obtained in experiments.
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