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Task: OBSERVATION Theoretically draw the microstructures of Ferrite, Austenite, Hypo-eutectoid, Pearlite, Hyper-eutectoi
Posted: Tue Jun 07, 2022 2:40 pm
by answerhappygod
- Task Observation Theoretically Draw The Microstructures Of Ferrite Austenite Hypo Eutectoid Pearlite Hyper Eutectoi 1 (130.01 KiB) Viewed 65 times
Task: OBSERVATION Theoretically draw the microstructures of Ferrite, Austenite, Hypo-eutectoid, Pearlite, Hyper-eutectoid steels. 3. Why B phase is not appeared in the Fe-Fe3C phase diagram? 4. Why ACM line is steeper than A3 line? 5. Why does proeutectoid phase (ferrite or cementite) form along austenite grain boundaries? 6. Compute the mass fractions of a ferrite and cementite in pearlite? 7. In a hypo-eutectoid steel, both eutectoid and proeutectoid ferrite exist. Explain difference between them. What will be the carbon concentration in each? 8. Compute the mass fractions of proeutectoid ferrite and pearlite that form in an iron carbon alloy containing 0.35%C 9. The microstructure of an iron-carbon alloy consists of proeutectoid ferrite and pearlite; the mass fractions of these two microconstituents are 0.174 and 0.826, respectively. Determine the concentration of carbon in this alloy. 10. The mass fraction of eutectoid cementite in an iron-carbon alloy is 0.109. on the basis of this information, is it possible to determine the composition of the alloy? If so, what is its composition? If this is not possible, explain why. 11. a-ferrite and 8-ferrite, both contain BCC structure. Why the solubility limit varies from a-ferrite to 8-ferrite?