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The number of atoms per unit cell and the, number of slip systems, respectively, for a facecentered cubic (FCC) crystal are, , A. 3,3, B. 3,12, C.4,12, , D. 4,48

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Denoting L as liquid and M as solid in a phasediagram with the subscripts representing, different phases, a eutectoid reaction is, described by, , A.M,>M,+M,, B.L, -M,+M,, C.L,+M,-—-M,, , D.M,+M,—M,

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In the phase diagram shown in the figure, four, samples of the same composition are heated to, temperatures marked by a, b, c and d., , At which temperature will a sample get, solutionized the fastest?, , 8 8 &, , Temperature (Arbitrary Units), , , , b, &, , , , ¥ ’, , 0 5 10 15, Composition (Arbitrary Units)

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From the lists given below, choose the most, appropriate set of heat treatment process and, the corresponding process chracteristics, , oe Characteristics, , 1. Austenite is converted into, bainite, , , , , , , , P. Tempering, , , , , , Q. 2. Austenite is converted into, Austempering martensite, , , , , , R. 3. Cementite is converted into, Martempering globular structure, , 4. Both hardness and, brittleness are reduced, , , , , , , , , , 5. Carbon is absorbed into the, metal, , , , , , , , , , , , , , , , , , A. P-3 Q-1 R-S, , B. P-4 Q-3 R-2, , C. P-4 Q-1 R-2, , D. P-1 Q-5 R-4