Below is shown the isothermal transformation diagram for a 0

Below is shown the isothermal transformation diagram for a 0.45 wt% C iron-carbon alloy. List the microconstituent(s) present for the heat treatment labeled (a) on this diagram. It is not necessary to state the proportion(s) of the microconstituents. Determine lines a,b and c the following options are in figure, will rate thanks!

Solution

Answer 1)

(a): final composition will consist of proeutectoid ferrite and martensite.

(b): the final microconstituent is tempered martensite.

(c): the final microstructure will consist of bainite, proeutectoid ferrite, and pearlite.