Question-1. (10 points). Answer the following questions regarding the Fe-Fe C phase diagram as below: (a) Explain the co

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Question 1 10 Points Answer The Following Questions Regarding The Fe Fe C Phase Diagram As Below A Explain The Co 1 (44.23 KiB) Viewed 22 times

Question-1. (10 points). Answer the following questions regarding the Fe-Fe C phase diagram as below: (a) Explain the cooling process of a molten Fe-C alloy (5 wt% C) from 1600 °C to room temperature in detail, including phase transitions in the equation) and phase composition changes. (4 points) (b) A piece of carbon steel contains 50% pearlite and 50% ferrite under the equilibrium condition, what is the carbon concentration in the alloy? What is the phase composition at 730 °C? What is the phase composition at 850 °C? (6 points) Temperature BOL 1000 3288 2720 2600 2552 1539 y Austente Ferrite 8-Delto iron CM - Cementie L CM begins Primary to solidiffy Bustenite begins to Austenite in solidify liquid Ley 2066°F 400 2400 2200 Austenite solid solution of carbon in gamma iron 130 1800 Magnetic 4F D A 670 1600 ACM 8 Austentie Feyc ledeburite and cementie Y Fey Austenite Cementie and 90 400 1331 to pearlite ledeburite 70 723 900 0.025 Pearlite Pearlite and Commentito Comentite, pourlite and and transformed 000 forrit Pe ledeburite Ap Magnete change of foc 40 +0.0001 4.3 0.50 0.69 -Hypo-eutectoid ----Hyper-eutectoid Steel Cast Iron 210 ON