Consider the Fe-C phase diagram as shown in figure above. Given that 500 g of y-Fe...
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Consider the Fe-C phase diagram as shown in figure above. Given that 500 g of y-Fe (austenite) containing 1.5 wt % of C is cooled to below 727 °C. () Identify the temperature, composition and write the eutectic and eutectoid equation that exist in the phase diagram. (i) What is the pro-eutectoid and perlite phase? (ii) How many kg each form of ferrte and cementite? (iv) How many kg each form perlite and pro-eutectoid phase? (v) What is the difference between microstructure of hypoeutectoid and hypereutectoid? Draw the microstructure of hypoeutectoid and hypereutectoid. Composition (at% C) 10 15 20 25 1600 1538°C 1493°C L 1400 2500 1394°C y+L 1200 1147°C 2.14 4.30 Y, Austenite 2000 1000 912°C y+ FezC 800 1500 727°C 0.76 0.022 `a, Ferrite 600 a+ FezC Cementite (FezC) 1000 400 1 3 4 6 6.70 (Fe) Composition (wt% C) Temperature (°C) 2. 5 Temperature (°F) Consider the Fe-C phase diagram as shown in figure above. Given that 500 g of y-Fe (austenite) containing 1.5 wt % of C is cooled to below 727 °C. () Identify the temperature, composition and write the eutectic and eutectoid equation that exist in the phase diagram. (i) What is the pro-eutectoid and perlite phase? (ii) How many kg each form of ferrte and cementite? (iv) How many kg each form perlite and pro-eutectoid phase? (v) What is the difference between microstructure of hypoeutectoid and hypereutectoid? Draw the microstructure of hypoeutectoid and hypereutectoid. Composition (at% C) 10 15 20 25 1600 1538°C 1493°C L 1400 2500 1394°C y+L 1200 1147°C 2.14 4.30 Y, Austenite 2000 1000 912°C y+ FezC 800 1500 727°C 0.76 0.022 `a, Ferrite 600 a+ FezC Cementite (FezC) 1000 400 1 3 4 6 6.70 (Fe) Composition (wt% C) Temperature (°C) 2. 5 Temperature (°F)
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