The invention belongs to the technical field of steel and iron
material design, and discloses a stainless steel strength and
toughness collaborative optimization method and
system based on heterogeneous integration, and the method comprises the steps: constructing a
database of stainless steel components, process parameters and mechanical properties; according to the
database, establishing a stacked heterogeneous integration model; quantizing contribution weights of input variables of the stacked heterogeneous integrated model to mechanical properties based on an SHAP method, identifying
key factors, and setting a multi-
target strength and
toughness collaborative optimization index to guide an optimization direction; optimal components and processes are screened according to SHAP analysis, a sample is prepared through vacuum melting, hot rolling and heat treatment, the performance is verified according to the
ASTM standard, and a final optimization scheme is determined; and a cross-scale digital twinborn
verification system is constructed, and collaborative optimization of
alloy components, process and macroscopic performance is realized. According to the method, the problems of low efficiency and insufficient generalization ability of a
single model of a traditional
trial and error method are solved, and an efficient and explainable intelligent optimization scheme is provided for development of high-performance stainless steel.