Ms for Fe-C system is around
Ms temperature: The temperature at which a martensitic transformation starts during cooling after austenitization. This temperature is around 2100C.
Following is WRONG about a phase diagram:
Time dependence phase changes is studied by kinetics of the phase transformations.
Which of the following is not a Hume-Ruthery condition?
Horizontal arrest in a cooling curve represents:
Which of the following is not a typical site for nucleation during solid stage transformation?
Overall transformation rate changes with temperature as follows:
Weight % of carbon in mild steels is
Nose of a C-curve represents
Gibbs phase rule is given as
P + F = C + 2
Where P = Number of phase
F = Number of degree of freedom
C = Number of components
Hyper eutectoid steels have carbon content
One group is named hypoeutectoid steel (carbon content less than 0.8%) and the other is hypereutectoid steel (carbon content more than 0.8%). In hypoeutectoid steel, the equilibrium microstructure at room temperature consists of ferrite and pearlite; this ferrite is called proeutectoid ferrite