Question

a. For a Pb-Sn alloy of 73 wt% Sn at 182.9 ºC, determine the mass fractions of primary and eutectic β.

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b. The melting point of Pb is 327 ºC at 1 atm pressure. If you have 6.43 kg of solid Pb at 250 ºC, what is the minimum amount of Sn you will have to add (in kg) to completely melt the resulting alloy at this temperature?

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c. Eutectic behavior refers to binary alloys displaying:

A. an increased strength relative to other alloy compositions.

B. an increased ductility relative to the pure metals.

C. a decreased melting temperature compared to the pure metals.

D. the presence of two solid phases in the phase diagram.

Answer 1