2. Using Fig 8.12 perform a phase analysis and microstructure sketch for a 35wt% Sn-65wt% Pb at (a) 300degrees C, (b) the temperature at which alpha begins to precipitate, (c)225degrees C, (d)...

2. Using Fig 8.12 perform a phase analysis and microstructure sketch for a 35wt% Sn-65wt% Pb at (a) 300degrees C, (b) the temperature at which alpha begins to precipitate, (c)225degrees C, (d) 183+degreesC, and (e) 183- degreesC. Show the lever rule calculation for one phase at each temperature with two phases. 4. A chemical analysis of a sample of Pb-Sn solder reveals that the solder consists of 60% proeutectic beta and 40% eutectic alpha+beta at 183 –degrees C. (a) Is this solder a hypoeutectic, eutectic or hypereutectic solder? (b) Determine the average composition of the solder. Refer to Fig 8.12 for this problem. Hint: Perform a phase analysis at 183+degrees C. 5. Using Fig 8.18 perform a phase analysis and microstructure sketch for a 50wt% Ag-50wt%Pt at (a) 1800degrees C, (b) 1300degrees C, (c) 1186+ degrees C (d) 1186 – degrees C and (e) 1000 degrees C. Show the lever rule calculation for one phase at each temperature. Also, (f) for this alloy determine the temperature range for which there will be the single phase beta.