Unformatted text preview: α + 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 lead–tin alloy of composition 80 wt% Sn–20 wt% Pb and at 180°C (355°F) do the following: (a) Determine the mass fractions of and β 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: 900°C (1650°F), 820°C (1510°F), 750°C (1380°F), and 600°C (1100°F). Label all phases and indicate their approximate compositions....
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This note was uploaded on 04/03/2012 for the course ENME 382 taught by Professor Christou during the Spring '12 term at Maryland.
- Spring '12