Development of the Rolling Texture in Titanium

The complete ODF of titanium, cold rolled up to 80% deformation, was calculated using the series expansion method, including the zero range method. The rolling texture obtained after 80% deformation is mainly characterized by the well-known orientation {0001} 〈 10 1 ¯ 0 〉± 40°TD but with distinct spread ranges about it. At about 40% deformation several other texture components are found of which the component {0001} 〈 11 2 ¯ 0 〉must be mentioned. Further features of the obtained textures are a minor component as well as characteristic zero ranges. Texture development as function of the rolling degree can be divided into three rangesjudged by increase or decrease of various texture components. In the early stages twinning in two different types of twinning systems is assumed whereas at higher deformation degrees the formation of the rolling texture is ascribed to glide deformation only.