Calculation of microstress in machining distortion of titanium alloy monolithic component based on x-ray diffraction experiment

Yong Yang, Weiwei Zhu

School of Mechanical Engineering, Qingdao Technological University, Qingdao, China

Machining distortion of titanium alloy monolithic component is closely related to the internal stress of material. In this paper, the various factors causing width effects of X-ray diffraction line were analysed, and the effect of stacking fault on diffraction spectrum was excluded according to the result of TEM experiment. The true diffraction spectrum, which can reflect inside information of Ti6Al4V titanium alloy, was determined using MDI JADE peak shape analysis method. Further, the calculation model of microstress was constructed. Combining with the result of X-ray diffraction experiment, microstress in machining distortion of titanium alloy monolithic component was calculated. This work establishes the foundation for investigating the mechanism of machining distortion of titanium alloy monolithic component.