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) for rapid solidification of binary alloys was considered. The LNDM takes into account deviation from local equilibrium of solute concentration and solute flux fields in bulk liquid. The exact solutions... alloys; solute trapping; rapid solidification; local-nonequilibrium diffusion; hyperbolic diffusion equation; solute concentration; solute flux fields 1 Introduction Rapid solidification phenomena occur......
chemical potential of the solute, R the gas constant, TI the interface temperature and C the solute concentration which depends on the coordinate X normal to the moving interface. Then, the diffusive flux... Solute trapping model based on solute drag treatment WANG Hai-feng(王海丰), LIU Feng(刘 峰), CHEN Zheng(陈 正), YANG Wei(杨 伟) State Key Laboratory of Solidification Processing, Northwestern......
Solute atom migration in GH4169 superalloy under electrostatic fieldsYao Wang1,Lei Wang1,Yang Liu1,Xiu Song1,Bei-jiang Zhang2,Jin-hui Du21. Key Laboratory for Anisotropy and Texture of Materials,Northeastern University2. Department of High-temperature Materials,Central Iron and Steel Research Institute摘 要:Electric field treatment(EFT)was applied......
J. Cent. South Univ. Technol. (2011) 18: 1434-1440 DOI: 10.1007/s11771-011-0858-4 Mathematical model for coupled reactive flow and solute transport during heap bioleaching of copper sulfide YIN... the interaction between chemical reactions, solution flow, gas flow, and solute transport within the leaching system. The governing equations are solved numerically using the COMSOL Multiphysics software......
J. Cent. South Univ. Technol. (2007)06-0838-04 DOI: 10.1007/s11771-007-0159-0 Dynamic experiment and numerical simulation of solute transmission in heap leaching processing LIU Jin..., China) Abstract: Solute transmission in saturated ore heap was studied numerically and experimentally. The convection-diffusion equation (CDE) used to describe the mass transportation in porous......
Simulation of electromagnetic-flow fields in Mg melt under pulsed magnetic field WANG Bin(汪 彬), YANG Yuan-sheng(杨院生), MA Xiao-ping(马晓平), TONG Wen-hui(童文辉) Institute of Metal Research... processing conditions. A mathematical model was built to describe the interaction of the electromagnetic-flow fields during solidification with ANSYS software. The pulsed electric circuit was first solved......
fields and solute fields become uniform, and the constitutional supercooling near the liquid/solid interface is decreased, so the grains grow under a uniform and isotropic condition... flux density plays an important role in the microstructure formation of LFEC ingots. With increasing the magnetic flux density from 0 mT to 32 mT, grains become finer (from about 120 μm to 30 μm......
Effects of magnetic fields on Fe–Si composite electrodepositionQiong Long,Yun-bo Zhong,Huai Wang,Tian-xiang Zheng,Jun-feng Zhou,Zhong-ming RenShanghai Key Laboratory of Modern Metallurgy and Material Processing, Shanghai University摘 要:Coatings containing Fe–Si particles were electrodeposited on 3.0wt% Si steel sheets under magnetic fields. The effects......
on polycrystalline Al2O3 substrates in various high magnetic fields at different temperatures. The contact angles of both Al and Sn drops on the Al2O3 substrates decreased under high magnetic fields. These decreases strongly depend on the temperature,magnetic flux density, magnetic properties of the metal drops, and the reactivity of the metal drops with Al2O3. Our results reveal that the wetting behavior......
J. Cent. South Univ. Technol. (2007)04-0496-04 DOI: 10.1007/s11771-007-0096-y Numerical simulation of temperature and velocity fields in plasma spray FAN Qun-bo(范群波), WANG Lu(王 鲁... with traditional methods, the initial working conditions can be directly related to the temperature and velocity fields of the plasma jet by deriving basic boundary conditions. Key words: plasma spray......
