For the Pb-Sn alloy system, (a) What is the compositions and relative amounts of the phases...
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For the Pb-Sn alloy system, (a) What is the compositions and relative amounts of the phases that constitute the eutectic microstructure? (b) For an alloy containing 30% Sn, (i) What are the relative amounts of a and B phases present at the eutectic temperature? (ii) What are the relative amounts of the eutectic and the proeutectic a phase present at the same temperature? Temperature (°C) 350 300 250 200 150 100 50 327°C a (100% Pb) 18.3 a + L 20 183°C Liquid a + ß 40 wt% Sn 61.9 60 80 232°C B+L 97.8 3 100 For the Pb-Sn alloy system, (a) What is the compositions and relative amounts of the phases that constitute the eutectic microstructure? (b) For an alloy containing 30% Sn, (i) What are the relative amounts of a and B phases present at the eutectic temperature? (ii) What are the relative amounts of the eutectic and the proeutectic a phase present at the same temperature? Temperature (°C) 350 300 250 200 150 100 50 327°C a (100% Pb) 18.3 a + L 20 183°C Liquid a + ß 40 wt% Sn 61.9 60 80 232°C B+L 97.8 3 100
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