The invention discloses a body-centered cubic
alloy microscopic segregation numerical prediction method, and relates to a body-centered cubic
alloy microscopic segregation numerical prediction method. The objective of the invention is to solve the problem that the microcosmic segregation formation of the body-centered cubic
alloy cannot be accurately predicted by the existing method. The method comprises the following steps: 1, carrying out micro-scale
mesh generation; 2, the square grids and the three surrounding grids forming a group; 3, completing dendritic
crystal growth; 4, determining the state of the grid; 5, determining a dynamic coefficient; 6, further dividing into four local computational domains; 7, calculating
nucleation in a local calculation domain; 8, randomly selecting a certain group of
pairing grids in the local calculation domain, and judging whether the group has a
nucleation phenomenon or not; 9, capturing four groups of surrounding neighbor
pairing grids by the mother core grid; 10, calculating parameters; 11, calculating a solute
diffusion equation; 12, repeating step 7-11, and outputting a solute component distribution
data file; estimating heat
treatment time. The method is used for the field of body-centered cubic alloy microscopic segregation numerical prediction.