owever, it should be noted that the final grain size is also affected by the heating temperature even at the fast heating rate. For example, with a fast heating rate of 120°C s−1, the grain size for T=Tα+30°C (50 μm) is larger than that for T=Tα (15 μm) under otherwise identical conditions. It is also noteworthy that CHT experiments conducted in the α+γ two-phase region showed no formation of fully lamellar structure.