CA Method Simulation of Solidification Structure of Mn18Cr18N Electroslag Remelting Ingots
Author of the article:ZHU Hua;HE Wenwu;CHEN Huiqin
Author's Workplace：School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China
Key Words：Mn18Cr18N electroslag remelting(ESR) hollow ingot columnar solidification structure cellular automata(CA)method
Abstract：
By using PROCAST software of cellular automata(CA),microstructure simulation method analyzes the 300 mm in diameter(inner 100 mm in diameter)with length 350 mm of Mn18Cr18N high nitrogen austenitic stainless steel electroslag remelting(ESR)of hollow ingot solidification process,the reasonable solidification process parameters,cooling condition,solidification grain nucleation density and growth rate of the microstructure.On this basis,the analysis of the 712 mm in diameter(inner 308 mm in diameter)with length 1202 mm hollow ingot ESR metal molten pool at the bottom of the shape and the influence of cooling conditions on the solidified structure characteristics.The results show that the ESR melting speed(slag-the rise of gold interface)control in 0.1 mm·s^-1 the following,can obtain the ideal shape of molten pool and the microstructure of the columnar crystal solidification;At the bottom of the heat transfer coefficient of 500 W·m^2·K^-1 can provide enough cooling capacity,and achieve maximum size at the bottom of the columnar crystal area.
