共搜索到1666条信息,每页显示10条信息,共167页。用时:0小时0分0秒859毫秒
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...; Abstract: A solute trapping model is developed based on a so-called solute drag treatment. By adopting a basic approach of phase-field......
......
深过冷凝固Co80Pd20合金中的枝晶生长周圣银1,胡锐1,蒋力1,李金山1,寇宏超1,常辉1,周廉1(1.陕西省西安市西北工业大学凝固技术国家重点实验室)摘 要:采用玻璃熔体净化与循环过热相结合的深过冷凝固技术实现了Co80Pd20合金的深过冷,获得了高达415K的最大过冷度.采用OM观察了不同过冷度下凝固合金的微观组织,分析了枝晶形成的过冷度区间及过冷度对枝晶形貌的影响.运用BCT模型对深过冷凝固Co80Pd20中的枝晶生长进行了理论分析,获得了深过冷凝固过程中的枝晶生长速率,枝晶尖端半径,枝晶尖端溶质浓度......
Trans. Nonferrous Met. Soc. China 22(2012) 2749-2755 An analytical model for local-nonequilibrium solute trapping during rapid solidification S. L. SOBOLEV Institute of Problems of Chemical Physics... solidification with effective diffusion coefficient →0 and complete solute trapping KLNDM(v)→1 at v→vDb for any kind of solid-liquid interface kinetics. Critical parameter for diffusionless solidification......
; hyperbolic diffusion equation; Si-As alloys; diffusionless solidification; complete solute trapping 1 Introduction Due to the relationship between the complex microstructures and the mechanical... successfully used in the extended solute trapping models [9-11], the generalized solute drag model [12,13], proposed as an extension of Hillert– Sundman theory, the application of the maximal entropy......
inside the α-Fe dendrite is suppressed. The solute trapping effect occurs when the droplet diameter reduces to approximately 100 μm. For Fe-26%Mo alloy, the solidification microstructure is composed... of undercooling. The critical undercooling for this transition increases with the rise of Mo content in the alloy. Key words: undercooling; rapid solidification; solute trapping; dendrite growth; drop tube......
Numerical simulation on trapping efficiency of steady filtration process indiesel particulate filter and its experimental verificationZHANG Gui-ju(张桂菊)1, 2, EJia-qiang(鄂加强)1, 3, ZUO Qing-song(左青松)1... of filtering wall and exhaust-flow characteristic parameters on trapping efficiency were also analyzed and researched. The results show that: 1) The two developed mathematical models are consistent......
Numerical analysis of interaction between solute atom and extended dislocation using force multipolesHiroaki Morita, Akiyuki Takahashi(Department of Mechanical Engineering, Faculty of Science and Technology,Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, Japan)Abstract:The interaction between a solute atom and an extended dislocation was investigated using a continuum approximation......
Investigation of the solute transportation coupled with heat transfer and fluid flow during twin-roll strip casting process Wanjun WANG1,Xinhua WANG1,Jiongming ZHANG1,Chenxi JI2,Yongsheng WANG1...:Mathematical model of solute [C] distribution in twin-roll strip casting process has been setup successfully with Calcosoft for the first time. Simulation result shows that in the center......
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......