Abstract
The dendrite tip growth kinetic coefficients and Gauss distribution parameters for 3D-CAFE simulation are determined according to the main compositions of 430 ferrite stainless steel and the macrostructure forming under the experimental condition of slow cooling. Based on the repeated computation with different heat transfer coefficients, t heat transfer coefficient under slow condition is determined when the solidification structure by above simulation computation is basically the same as the experimental one under slow cooling. The temperature fields and flow fields of 430 ferrite stainless steel during the solidification process under the conditions of slow cooling, air cooling and water cooling were analyzed by use of 3D-CAFE method, respectively. The results show that the temperature field of solidification process under slow cooling condition is the most uniform and the solid-liquid region is the widest, followed by air cooling condition, while the temperature field
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