Numerical Simulation of Wire Rod Cooling in Eutectoid Steel under Forced-Convection

A coupled thermal-microstructural simulation model was developed to estimate the thermal history in a eutectoid steel wire rod under continuous cooling and forced-convection. The phenomena of heat transfer, phase transformation estimation boundary condition. histories were analyzed at different rates emulate forced-convection conditions by air-jet as controlled conveyor. acquired used calculate transfer coefficients through solution Inverse Heat Conduction Problem, while approximated with Johnson–Mehl–Avrami–Kolmogorov (JMAK) kinetic model. From parameters, user-defined function (UDF) coded employed ANSYS Fluent® software. results compared validated experimental histories, obtaining good agreement between both responses, microstructural evolution pearlite using Scanning Electron Microscopy (SEM) Vickers microhardness. It found that specimen diameter air velocity are main variables modify undercooling therefore interlamellar spacing.