Question: What is/are the resultant phase or phases present when a eutectoid steel is first quenched to the 50% line at Ms >T> Mf at

What is/are the resultant phase or phases present when a eutectoid steel is first quenched to the 50% line at 10000 7270 C) The TTT diagram for a eutectoid Fe-C alloy Temperature( Ms ME TN y' (metastable) -0%- 50% 10-

What is/are the resultant phase or phases present when a eutectoid steel is first quenched to the 50% line at Ms >T> Mf at a rate faster than the CCR, and then isothermally held for t>104 sec, followed by rapid reheating to TN>T>Ms, held there for 104 sec and then slowly cooled to room temperature. Sketch the heat treatment process on the TTT diagram provided herein. What are the major characteristics of eutectoid and martensitic transformations in steel? Briefly compare and contrast them. 10000 7270 C) The TTT diagram for a eutectoid Fe-C alloy Temperature( Ms ME TN y' (metastable) -0%- 50% 10- 25% -100%- + 1 + 10 y (stable) 75% - 0% -a'ty'= ' 50% + 10 time (s) a+FeC Bainite 100% 10 Eutectoid temperature 104

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