Prediction Models for Room Temperature Tensile Strength of TC4 Titanium Alloy with Equiaxed Structure Based on Element Compositions

Based on Jmatpro software and solid solution strengthening theory, the models for predicating room temperature tensile strength of TC4 titanium alloy with equiaxed structure according to element compositions were established by summarizing the sample data with random distribution. By comparing the cubic polynomial fitting model and the interaction model, it was found that the interaction among different elements was weak. Compared with the calculating results of Jmatpro software, the prediction accuracies of the two models were both very high. The verification test results show that compared with the measured tensile strength of TC4 titanium alloy, the prediction errors of the two models were both less than 10 MPa, and the predicating results was consistent with those calculated by Jmatpro software, which showed that the established models were simple and easy and had practical application value.