(a) Determine the critical nucleus size r for homogeneous nucleation for precipitation of phase in a matrix of phase (b) Plot the total free energy change G as a function of the radius of the precipitate (c) Comment on the value of r for homogeneous nucleation for solid state precipitation when com...

a From Equation 121 the total change in free energy for nucleation of a spherical solid precipitate ...

(a) Determine the critical nucleus size r* for homogeneous nucleation for precipitation of phase in a...

Question:

(a) Determine the critical nucleus size r* for homogeneous nucleation for precipitation of phase β in a matrix of phase α.
(b) Plot the total free energy change ΔG as a function of the radius of the precipitate.
(c) Comment on the value of r* for homogeneous nucleation for solid-state precipitation when compared to the liquid to solid transformation.