it is concluded that the diameter direction has worse macrosegregation than the catercorner direction.
结果表明,径向比对角线方向宏观碳偏析大;
the dense crystal structure can reduce the macrosegregation of the billets.
较致密的凝固组织有利于减轻宏观偏析;
a continuum model and numerical method were established for description of heat, mass and momentum transfers as well as macrosegregation formations in metallic alloy ingots.