1.For a 40%Sn alloy, how much of the alpha phase (%) is there at 100 degrees C?
ID: 707436 • Letter: 1
Question
1.For a 40%Sn alloy, how much of the alpha phase (%) is there at 100 degrees C? 2.For a 40%Sn alloy, how much of the beta phase (%) is there at 100 degrees C? 3. For a 40%Sn alloy, how much of the eutectic microconstituent (%) is there at 100 degrees C?4.For a 40%Sn alloy, how much of the proeutectic microconstituent (%) is there at 100 degrees C?
1.For a 40%Sn alloy, how much of the alpha phase (%) is there at 100 degrees C? 2.For a 40%Sn alloy, how much of the beta phase (%) is there at 100 degrees C? 3. For a 40%Sn alloy, how much of the eutectic microconstituent (%) is there at 100 degrees C?
1.For a 40%Sn alloy, how much of the alpha phase (%) is there at 100 degrees C? 2.For a 40%Sn alloy, how much of the beta phase (%) is there at 100 degrees C? 3. For a 40%Sn alloy, how much of the eutectic microconstituent (%) is there at 100 degrees C?
4.For a 40%Sn alloy, how much of the proeutectic microconstituent (%) is there at 100 degrees C?
317? 232? e 200 180 18-3 979 120 100 0 S115 2250 3 40 45055 0 65 0 75 80 8906 100 wt % Sn
Explanation / Answer
a . At tie line of 100 deg C, Calpha = 4%,
b. At tie line of 100 deg C, Cbeta = 100 %
c. For eutectic microconstituent,
We= (40 - 18.3)/ ((61.9-40) + (40 - 18.3))*100 = 49.77 %
d. For proeutectic microconstituent,
We= (61.9-40) ((61.9-40) + (40 - 18.3))*100 = 50.23 %
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