This letter reports the effect of heating rate on the grain refinement of a
Ti-46Al-2Cr-2Nb (at.%) alloy by cyclic heat treatment. Results show that m
icrostructures with two different sizes were developed at two different hea
ting rates. A coarse fully lamellar structure can be refined to a fine one
with a size of 15 mum if the heating rate, together with the heating temper
ature, is appropriately controlled. (C) 2001 Elsevier Science B.V. All righ
ts reserved.