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In order to improve the low toughness and poor crack resistance of high chromium cast iron (HCCI), the laminated metal composite (LMC) consisting of HCCI and carbon steel has received increasingly attentions in modern industries. Considering that the controllable temperature field at interface of LMC is a key issue in liquid-solid bimetal casting process, a three layered finite element method (FEM) model has been proposed. The influence of parameters including pouring temperature Tpour, preheating temperature Tpre and effective volume ratio VRe on temperature field are discussed. Simulation results show that the temperature at the interface between two dissimilar metals increases with increasing the value of Tpour, Tpre or VRe. Through the adjustment of processing parameters, the contact surface of solid metal can be heated up to mushy state, and then form a thin transient mushy layer. The prefect metallurgical bonding can be achieved by adopting the optimized parameters in bimetal casting process.

Analysis of Temperature Field in Liquid-Solid Bimetal Casting of Laminated Metal Composite