Abstract:The influence of equal channel angular pressing (ECAP) routes on the microstructure and properties of hcp commercial-purity titanium (CP-Ti) was investigated. Samples were successfully deformed at room temperature via three different processing routes: A, B, and C, using a die with an internal angle Φ of 120° and an outer curvature angle Ψ of 20°. After two passes, the microstructure and mechanical properties of as-pressed CP-Ti were studied. The results show that the ultimate strength and microhardness of CP-Ti billet were sharply enhanced after two ECAP passes by three ECAP routes at room temperature. But the ECAP route does not have significant effect on the strength and the microhardness of as-pressed CP-Ti. The microstructure developments occurred during the first pass, such as gain shape and deformed mechanism, vary with different routes during the second ECAP pass.