Microstructural evolution during hot compression and subsequent alpha precipitation of the beta titanium alloy beta-Cez

The behaviour of the titanium beta-Cez alloy during its beta forging was studied using uniaxial compression tests realized in a large range of rates and deformations. Various techniques were used to follow microstructural evolutions and to determine the influence of forging conditions on precipitation. At low strain rates, an equilibrium is established between ''continuous'' crystallization and regeneration. At high strain rates, the structure is more sensitive to deformation ratios, Deformation ratios and strain rates both influence precipitation by modifying the density of the nucleation sites.