Answer to Question #104342 in Mechanical Engineering for Juan

Question

2. Draw a typical isothermal transformation diagram for plain carbon eutectoid steel and indicate the various decomposition products expected by simple diagrammatic drawing (5)
3. Explain how you would use a series of experiments to construct the diagram in question 2? (8)
4. Draw time-temperature cooling paths for a 1080 steel on an Isothermal transformation diagram that will produce the following microstructures. Start with the steels in the austenitic condition at time = 0 and 850ooC. (a) 100% martensite, (b) 50% martensite and 50% coarse pearlite, (c) 100% fine pearlite, (d) 50% martensite and 50% upper bainite, (e) 100% upper bainite, and (f) I00% lower bainite. (8)

Answer 1

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