2034hw8 - MSE2034 Homework #8 Due Thursday, April 1 Maximum...

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MSE2034 Homework #8 Due Thursday, April 1 Maximum Score = 10/10 1) [6 points] Several alloy compositions are listed below. Assume that we want to cool each one down from a liquid state to room temperature (or the lowest T given on the appropriate phase diagram, if RT is not shown). For each of the given alloys, determine (I) what phases are formed at each stage of the cooling process, (II) what the lowest stable temperature is in each phase field [just before a phase change occurs], (III) what the composition of each of these phases is at the lowest stable temperature in each field, (IV) what the weight fraction (or wt%) of each phase is at the lowest stable temperature in each field, and (V) what the microstructure will look like at the lowest stable temperature in each field. (a) 50 wt% Cu – 50 wt% Ni [Fig 9.2] (b) 61.9 wt% Sn – 38.1 wt% Pb [Fig 9.8] (c) 2 mols Pb – 65 mols Mg [Fig 9.20] (d) 98.5 wt% Fe – 1.5 wt% C [Fig 9.24] (e) 6 mols Mg – 3 mols Pb [Fig 9.20] (f) 30 wt% Zn – 70 wt% Cu [Fig 9.19]
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2034hw8 - MSE2034 Homework #8 Due Thursday, April 1 Maximum...

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