【简答题】Refer to Figure 3.8 in the text, calculate relative mass of β and α in eutectic alloy in eutectic phase diagram Pb-Sn at temperature just lower than 183°C and room temperature.
【简答题】Refer to Figure 3.8 in the text,calculate relative mass of three microstructure of α(primary phase),βII and(β+α)Ein 40% Sn Pb-Sn alloy at room temperature.