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Unformatted text preview: + liquid phase region. If the mass fraction of each phase is 0.5, then estimate: (a) The temperature of the alloy (b)The composition of each of the two phases 4. For a leadtin alloy of composition 80 wt% Sn20 wt% Pb and at 180C (355F) do the following: (a) Determine the mass fractions of and phases. (b) Determine the mass fractions of primary and eutectic microconstituents. (c) Determine the mass fraction of eutectic . 5. For a 64 wt%Zn 36 wt%Cu alloy, make schematic sketches of the microstructures that would be observed for conditions of very slow cooling at the following temperatures: 900C (1650F), 820C (1510F), 750C (1380F), and 600C (1100F). Label all phases and indicate their approximate compositions....
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- Spring '12