Effect of Texture on High Temperature Deformation Behaviors of Ti-6Al-4V Alloy

Textures developed during hot rolling process may affect the high temperature deformation behaviors of Ti alloys, but their relation has not been well understood or quantitatively analyzed yet. A series of load relaxation and creep tests for hot rolled Ti-6Al-4V alloy has been conducted in this work to clarify the effect of textures on the deformation behaviors of the alloy under 700 degrees C and the result was analyzed by using an internal variables approach. The internal strength sigma* was found to vary significantly by the textures, but not by the temperature change, while the texture effect was found to decrease at higher temperatures.