The invention discloses a
hot working quality intelligent prediction method based on establishment of
coupling structure and deformation condition influences, and belongs to the field of
metal material plastic
forming processes. According to the method, the
coupling influence of the
microstructure state and the deformation condition is considered, the
metal material
hot working quality prediction method suitable for the actual
machining process is established, and the problem that the
hot working quality under the constant deformation condition and the non-constant deformation condition cannot be accurately predicted through an existing
universal model is solved. According to the method, the
dislocation density, the grain size, the
dynamic recrystallization degree, the
strain rate, the deformation temperature and the deformation degree serve as input variables, the power dissipation rate and the deformation
instability factor serve as output variables, a BP neural network prediction structure is established, training is conducted according to the experimental result under the constant deformation condition, and the
dynamic recrystallization degree is obtained. And a hot working quality intelligent prediction model influenced by the
coupling tissue and the deformation condition is obtained. The prediction of the hot working quality of the
metal material under the complex deformation condition in the single-pass
thermal deformation process is realized, and the prediction accords with the actual
engineering processing condition.