Question: In the Fe - C system Fe 3 C is only a metastable phase, while graph - ite is the most stable carbon - rich

In the Fe-C system Fe3C is only a metastable phase, while graph- ite is the most stable carbon-rich phase. By drawing schematic free energy-composition diagrams show how the Fe-graphite phase diagram compares to the Fe-Fe3C phase diagram from 0 to 2 wt% Fe. Check your answer with the published phase diagram in the Metals Handbook for example.

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