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(a) Describe and draw the Fe-C diagram, give the approximate composition and temperature for the eutectic, eutectoid and peritectic transformation. Identify the phase fields and the associated crystal structure. Give

the customary name for each phase. (b) What are the advantages of directional solidification and how is it performed? Describe how single crystal components are manufactured. (c) A casting of very intricate shape and good surface finish is to be cast. Suggest some suitable methods if the casting is (i) solid and if it is (ii) hollow with a cavity of complex shape.

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