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4. Please answer the following questions using the phase diagrams shown below. °C °F 350 327° 600 300 Liquid 500 250 232° 200 ? ? + L 183° ? + L 400 150 19.3 61.9 97.6 300 100 ? + ? ? 200 50 100 0 Pb 10 20 30 40 50 60 70 80 90 Sn Weight percent tin a) In the above phase diagram, at what temperature will tin (Sn) have the maximum solubility in lead (Pb) when the solution is still in a single-solid-phase (0.5 point)? b) What is the maximum amount of tin (in wt%) that can be held in lead within its structure and still be a single phase at the above temperature in a)? (0.5 point) c) Consider any alloy containing between 19.3 and 97.6 wt% Sn at a temperature just above the 183°C horizontal line. c-1) Which phases might the above alloy have? (1 point) c-2) Regardless of the overall composition of the above alloy in c-1), any liquid that is present in this alloy will have a fixed wt% of Pb. Please determine this value (wt%) for Pb. (1 point)

          4. Please answer the following questions using the phase diagrams shown below.

°C	°F
350	327°	600
300	Liquid	500
250	232°
200	?	? + L	183°	? + L	400
150	19.3	61.9	97.6	300
100	? + ?	?	200
50	100
0	Pb 10 20 30 40 50 60 70 80 90 Sn
Weight percent tin

a) In the above phase diagram, at what temperature will tin (Sn) have the maximum solubility in lead (Pb) when the solution is still in a single-solid-phase (0.5 point)?
b) What is the maximum amount of tin (in wt%) that can be held in lead within its structure and still be a single phase at the above temperature in a)? (0.5 point)
c) Consider any alloy containing between 19.3 and 97.6 wt% Sn at a temperature just above the 183°C horizontal line.
c-1) Which phases might the above alloy have? (1 point)
c-2) Regardless of the overall composition of the above alloy in c-1), any liquid that is present in this alloy will have a fixed wt% of Pb. Please determine this value (wt%) for Pb. (1 point)

4. Please answer the following questions using the phase diagrams shown below.

°C °F
350 327° 600
300 Liquid 500
250 232°
200 ? ? + L 183° ? + L 400
150 19.3 61.9 97.6 300
100 ? + ? ? 200
50 100
0 Pb 10 20 30 40 50 60 70 80 90 Sn
Weight percent tin

a) In the above phase diagram, at what temperature will tin (Sn) have the maximum solubility in lead (Pb) when the solution is still in a single-solid-phase (0.5 point)?
b) What is the maximum amount of tin (in wt%) that can be held in lead within its structure and still be a single phase at the above temperature in a)? (0.5 point)
c) Consider any alloy containing between 19.3 and 97.6 wt% Sn at a temperature just above the 183°C horizontal line.
c-1) Which phases might the above alloy have? (1 point)
c-2) Regardless of the overall composition of the above alloy in c-1), any liquid that is present in this alloy will have a fixed wt% of Pb. Please determine this value (wt%) for Pb. (1 point)

Added by David H.

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