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Motivation and goals:
The reported kinetic theories of pearlitic transformation assume a constant lamellae spacing and growth rate, which is a reasonable assumption for a steady-state evolution. However, there are instances for e.g., formation of divergent pearlite, where the evolution is characterized by increase in lamellae spacing and simultaneous decrease in growth. In the C2 project, we perform large-scale simulations to identify the regimes and thermodynamic conditions that induce anomalous divergence in some pearlitic alloys. To gain deeper insights into the anomolous diffusive mechanism, the numerical simulations are conducted for range of temperatures above lower Ae1 in Fe-C-Mn steels. The objective here is to develop of unified kinetic theory that also accounts for this fascinating non-steady evolution of pearlite. |
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