The effects of rolling on microstructure and mechanical properties of Ti600 titanium alloy for engine were investigated by using microstructure observation and tensile testing.The results show that theβandαphase in microstructure of transverse blank after the three-roll rolling form the equaxialα+βas a result of recrystallization.The grain size is refined with improvement of uniformity after rolling.The longitudinal structure of the blank is mainly composed of primaryα

secondaryαandβphase matrix.The hardness and mechanical properties of titanium alloy plate are increased after rolling

especially transverse direction

where increase of mechanical properties at room temperature are more than15%.Fracture morphology of titanium alloy was characterized by quasi-cleavage fracture with torn edges and dimples.Dimples are generated mainly in grain boundary

especially in lamella regiment and the grain boundary betweenαphase.