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Unformatted text preview: water (density of water = 62.4 lbs/ft 3 ) and that the ambient temperature is around 20 F. This calculation shows why snowplows are always needed. 6. Go to http://www.doitpoms.ac.uk/miclib/phase_diagrams.php?id=3 to view an interactive version of the phase diagram for aluminum and silicon. (a) What are the eutectic temperature and the eutectic composition? (b) What does the shape of this phase diagram tell you about the solid solubility of Al in Si (e.g. completely miscible, partially miscible, completely immiscible)? Of Si in Al? (c) What is the maximum solubility of Al in Si at 500 C? (d) What is the maximum solubility of Si in Al at 500 C? (e) For an alloy with a composition of 5 wt.% Si, list the phases present, the composition of each phase and the weight fraction of each phase at 700, 600 and 400 C. Draw a sketch of each microstructure. 7. Callister, Question 9.44...
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- Spring '10