Residual stresses of blanks 83Ti-5Al-5Cr-5Mo alloy after deformation and annealing

Research of opening angle changes in bent billets of Ti-5Al-5Mo-5V-1Cr-1Fe alloy after bending and annealing at temperature 800 °C for 1, 2, 3, 4, 5 hours has been madeto improve the accuracy of the titanium partsmanufacture. The change of surface residual micro- and macrostrains via X-ray analysis was found depending on the duration of annealingduration. It was found that the value of the opening angle between the legs bent billets is defined by the influence of the level of residual microstress. To maintain the geometry of the bent billets it is recommended to anneal them at a temperature of 800 °C for 2 hours.