Deformation and dynamic recrystallization behavior of a high Nb containing TiAl alloy

► A high Nb containing TiAl alloy was designed. ► The present alloy possesses a wider hot-working window than other TiAl alloy. ► The initiation of dynamic recrystallization is very easy. ► The low Avrami exponent indicates a low dynamic recrystallization rate. ► The role of β phase is discussed in details.