b) This diagram shows an optical micrograph of a polished steel specimen. The black regions are cementite. 50 um i) Label the phases and microstructures shown in the micrograph. ii) Explain how this microstructure is formed when molten steel at 1200°C is cooled. You may find it helpful to illustrate your explanation with a diagram.

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Q: (°C) (liquid) L A

A:

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