Describe various phase transformations of iron after cooling at various rates using TTT diagram.

Describe various phase transformations of iron after cooling at various rates using TTT diagram.
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TTT is Time-Temperature-Transformation diagram. It shows the microstructures resulting from non-equilibrium cooling which is not possible on Fe-c diagram. It shows various microstructures of steels depending upon cooling rate & also the temperature and time taken for each transformation.

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