(a) The Fe-C phase diagram is show in Figure Q5(a). Answer the following questions based on the phase diagram. (i) The microstructure of an iron-carbon alloy consists of proeutectoid ferrite and pearlite; the mass fraction of these two phases are 0.28 and 0.72, respectively. Determine the concentration of carbon in this alloy. (ii) What is the carbon concentration in the eutectoid and proeutectoid ferrite of a Fe-0.2 wt%C alloy? (iii) Schematically sketch the microstructures of hypocutectoid and hypereutectoid steels at room temperature. T(°C) 1600 1400 y+L A I+Fe.C 1200 (austenite) 100아 1148°C y+Fe,C 800 727°C 60아 a+Fe,C 4004 0.022 0.75 6.7 C, wt% C Figure Q5(a) Fe-C phase diagram *4.30 6 Fe,C (cementite)

(a) The Fe-C phase diagram is show in Figure Q5(a). Answer the following questions based on the phase diagram. (i) The microstructure of an iron-carbon alloy consists of proeutectoid ferrite and pearlite; the mass fraction of these two phases are 0.28 and 0.72, respectively. Determine the concentration of carbon in this alloy. (ii) What is the carbon concentration in the eutectoid and proeutectoid ferrite of a Fe-0.2 wt%C alloy? (iii) Schematically sketch the microstructures of hypocutectoid and hypereutectoid steels at room temperature. T(°C) 1600 1400 y+L A I+Fe.C 1200 (austenite) 100아 1148°C y+Fe,C 800 727°C 60아 a+Fe,C 4004 0.022 0.75 6.7 C, wt% C Figure Q5(a) Fe-C phase diagram *4.30 6 Fe,C (cementite)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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