Abstract
Titanium alloys are ideal materials for load-bearing components, and hot forming is the primary method for manufacturing these parts. In this work, the hot deformation behavior and microstructure of an anti-damage titanium alloy are studied, and a phenomenological constitutive model is established. The results show that hot deformation has little effect on the shape of the equiaxial α phase, and the α phase retains its equiaxial morphology. The size and fraction of the α phase vary with the hot-deformation parameters. The dynamic phase transformation, Ostwald ripening, and spheroidization occur simultaneously during hot deformation. An Arrhenius constitutive equation is established with a correlation coefficient of 0.9848, and the model can be utilized to predict the flow behavior of the studied titanium alloys at high-temperature deformation.

Key words
microstructure, hot deformation, titanium alloy, constitutive modeling

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