Materials Engineering (MT30001) Assignment - 1 Solutions

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Q1) Calculate the mass of different Cementites that form upon cooling from the liquidus temperature to the room temperature of a 5wt% Fe-C alloy (White Cast-Iron) of 100 gm.

(Solid Solubility of C in α-Fe is 0.008 at Room Temperature)

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Q2) Estimate the ratio of the width of Ferrite and Cementite in a Pearlite colony. Consider that the density of Ferrite is 7.87 gm/cm³ and that of Cementite is 7.66 gm/cm³.

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Q3) How many Iron and Carbon atoms exist in a lattice of Fe₃C, which has a complex orthorhombic structure?

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