Effects of micro-parameter on solidification structure of ZG12MnMoV low-alloy steel based on CAFE model

摘要

We mainly studied effects of nucleation parameters((35)T_(v,max) and(35)T_(s,max)) and superheat on solidification structure of ZG12 MnMoV low-alloy steel by integration of CAFE and experimentation. The result shows that grain dimension is not only related with nucleation parameters, but also with superheat. The smaller(35)T_(v,max) and(35)T_(s,max) get, the tinier grain turns. The lab experimentation on optimum parameter is conducted, the mean diameter of grain in lab test specimen is 153.2 μm, and the mean diameter calculated by CAFE model is 151.1 μm. The calculated solidification structure agrees with the experimental result in the main.