Q° Draw a thermal equilibrium diagram for binary alloy (Pb-Sn) from the following data:- 1-Pb melts at 327°C,and Sn melts at 232°C. 2-Pb is soluble in Sn in solid state to extent of 2.6wt%at 183 °C and 0 wt% at 0°C. 3-Sn is soluble in Pb in solid state to extent of 19.5 wt% at 183°C and 2wt%at 0°C. 4-Eutectic is formed at 1830C which containing 38.1 wt%Pb-61.9wt% Sn. a- What phase are present? b- What are the composition of the phase For a 40 wt% Sn -60 wt% Pb alloy at 150°C. ? c- Calculate the relative amount of each phase present in terms of: d- Mass fraction and, volume fraction: Assume that the densities of (a) and (B) phases are 11.2 and 7.3 g/cm3, respectively.