For the following TT diagram below The steel after cooling w

For the following TT diagram below:

The steel after cooling will contain mostly __________.

(ARROW POINTING TO CURVE)

a. Austenite

b. Pearlite

c. Bainite

d. Martensite

e. All of the above

Solution

to know the composition of steel we must have to know the quinching time in sec

but there is not providing information about the time

the temperature 1000 ⁰C to 200 ⁰C takes more time so grain size will be increses.

answer is c bainite

When formed during continuous cooling, the cooling rate to form bainite is more rapid than that required to form pearlite, but less rapid than is required to form martensite (in steels of the same composition).

mostly having bainite and then austanite