The deformation behavior of Zn-Cu-Ti alloy was investigated by compression tests on the Gleeble-1500D thermal simulator machine under the condition of the temperature at 150

240 ℃ and the strain rate at0. 01

10 s- 1as well as the reduction of 50%. Microstructure evolution during compress was observed by optical microscope. The result show that the dynamic recrystallization occurs during hot compression deformation.Characteristics of the true stress-true strain curves are different with different deformation conditions. The maximum flow stress is decreased with the increase of deformed temperature and decrease of strain rate. The flow stress model can be described by a constitutive equation in the form of Arrhenius function. Two safety zone in the temperature of 150

210 ℃

strain rate at 0. 67

10 s- 1and in the temperature of 215

240 ℃

strain rate at0. 01

0. 98 s- 1was presented based on processing map under the condition of the experiment. The optimum domain for hot working occurs at 235

240 ℃ and 0. 09

0. 11 s- 1with the efficiency of power dissipation of35%.