Thermodynamic Modeling of Solid-liquid Interfacial Energies and Its Application on Grain Growth Simulation of TiC-based Cermets
Solid-liquid interfacial energy is a thermophysical property that describes the interfacial state between the solid and liquid phases.It plays an important role in various material science phenomena,such as nucleation,wetting and adsorption.Experimental determination of this property involves complex procedures,while the number of valuable solid-liquid combinations to test is immense.Models to obtain solid-liquid interfacial energies through theoretical derivations is therefore of great value.In the present work,the modeling of solid-liquid interfacial energies is developed.The total interfacial energy is separated into chemical and structure contributions,which are estimated by applying reported Thermo-Calc Gibbs energies,as well as correlated with molar interfacial area and melting temperature of solid phase.This model can be extended to multicomponent systems if it is simplified as a pseudo-binary type.The present model is well validated by comprehensive datasets of reported solid-liquid interfacial energies for various alloys and metal-carbides.Furthermore,microstructure simulations can be performed with key input parameters obtained using this model,such as grain growth simulations during liquid-phase sintering of TiC-Co and TiC-Ni cermets.
Solid-liquid interfacial energy Modeling Thermodynamics Grain growth Cermets
Zhang Cong Yin Haiqing Du Yong Zhang Ruijie Jiang Xue
Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing,Bei State Key Laboratory of Powder Metallurgy,Central South University,Hunan 410083,China
国际会议
北京
英文
2007-2010
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）