Using the isothermal transformation diagram for a 1.13 wt \% C ... | Filo

Make a copy of the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition (Figure 10.22 ) and then sketch and label time-temperature paths on this diagram to produce the following microstructures: (a) 100 % coarse pearlite (b) 50 % martensite and 50 % austenite (c) 50 % coarse pearlite, 25 % bainite, and 25 % martensite | Numerade

Using the isothermal transformation diagram for a 1.13 wt% C steel alloy (Figure 10.39 ), determine the final microstructure (in terms of just the microconstituents present) of a small specimen that has been subjected to the following time-temperature treatments. In each case assume that the specimen begins at 920^∘ C (1690^∘ F) and that it has been held at this temperature long enough to have achieved a complete and homogencous austenitic structure. (a) Rapidly cool to 250^∘ C(480^∘ F), hold fo

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