Investigation of High-Temperature Constitutive Behavior of Ti555211 Titanium Alloy Subjected to Plastic Deformation in the Different Phase Regions

Ti555211 titanium alloy is subjected to plastic deformation in the dual-phase (? + ? phase) zone and single-phase (? at various temperatures strain rates. High-temperature constitutive equations of are established order describe behavior different phase zones. By comparing equation with that zone, activation energy former was found be higher than latter. It obvious ? obviously greater phase. Furthermore, microstructural evolution zone. When size grains increased decreasing rate. considerably increasing temperature. In particular, microstructures region, elongated can observed it more difficult for induce region region.