庞瑞朋,王福明,王金龙,李长荣,张国庆

• 1:北京科技大学钢铁冶金新技术国家重点实验室
• 2:北京科技大学冶金与生态工程学院
• 3:内蒙古包钢钢联股份有限公司技术中心
• 4:北京科技大学材料科学与工程学院

摘要(Abstract)：

采用3D-CAFE法与实验相结合的方法,研究形核参数(n v,max,ΔT v,max)和过热度对430铁素体不锈钢凝固组织的影响。本文条件下得到nv,max越大,ΔTv,max越小,晶粒越细小。计算得到最佳过热度值为20℃,并进行了过热度为20℃的实验室实验,试样的凝固组织几乎全部为球形等轴晶,晶粒的平均直径从表面到中心依次增加。实验室试样的晶粒平均直径为918.07μm,3D-CAFE模型计算20℃过热度试样的晶粒平均直径为920.13μm。计算得到的凝固组织与实验结果基本一致。

关键词(KeyWords)： 过热度;柱状晶;等轴晶;3D-CAFE

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费专项资金资助(FRF-SD-12-010A)

作者(Author): 庞瑞朋,王福明,王金龙,李长荣,张国庆

DOI: 10.13289/j.issn.1009-6264.2013.12.034

参考文献(References)：

• [1]Katsumata A,Todoroki H.Effect of rare earth metal on inclusion composition in molten stainless steel[J].Iron&Steel Maker,2002,29(7):51-57.
• [2]Shin H J,An J K,Park S H,et al.The effect of texture on riding of ferritic stainless steel[J].Acta Materialia,2003,51(6):4693-4706.
• [3]Suzuki K,Asami S.Microsegregation of chromium and carbon and ridging phenomenon 18 Cr stainless steel sheets[J].Transactions ISIJ,1984,24(1):1-6.
• [4]Suzuki K,Asami S.Ridging phenomenon related to the undulated segregation-pattern on transverse section in stainless steel[J].Transaction ISIJ,1984,24(5):359-364.
• [5]Sheppard T,Richards P.Roping phenomenon in ferritic stainless steels[J].Materials Science and Technology,1986,2(7):693-699.
• [6]Defilippi J D,Chao H C.Effect of chromium and molybdenum segregation on the ridging behavior of type 434 stainless steel[J].Metallurgical and Material Transaction B,1971,2(11):3209-3216.
• [7]Charbon Ch,Jacot A,Rappaz M.3D stochastic modeling of equiaxed solidification in the presence of grain movement[J].Acta Metallurgica et Materialia,1994,42(12):3953-3966.
• [8]王金龙,王福明,李长荣,等.碳与磷含量对易切削钢9SMn28微观组织的影响[J].材料热处理学报,2010,31(2):60-64.WANG Jin-long,WANG Fu-ming,LI Chang-rong,et al.Effect of carbon and phosphor contents on microstructure of a free cutting steel 9SMn28[J].Transactions of Materials and Heat Treatment,2010,31(2):60-64.
• [9]Chang S R,Kim J M,Hong C P.Numerical simulation of microstructure evolution of Al alloys in centrifugal casting[J].ISIJ International,2001,41(7):738-747.
• [10]Gandin C A,Rappaz M.A 3D cellular automaton algorithm for the prediction of dendritic grain growth[J].Acta Materialia,1997,45(5):2187-2195.
• [11]Rappaz M,Gandin C A.Probablistic modeling of microstructure formation in solidification process[J].Acta Metallurgica et Materialia,1993,41(2):345-360.
• [12]Ignaszak Z,Hajkowski M,Hajkowski J.Prediction of dendritic microstructure using the cellular automaton-finite element method for hypoeutectic Al-Si alloys castings[J].Materials Science,2006,12(2):124-128.
• [13]Zhu M F,Kim J M,Hong C P.Modeling of globular and dendritic structure evolution in solidification of an Al-7mass%Si alloy[J].ISIJ international,2001,41(9):992-998.
• [14]LIU Xiao-bo,XU Qing-yan,JING Tao,ett al.Microstructure of aluminum twin-roll casting based on cellular automation[J].Transaction of Nonferrous Metal Society of China,2008,18(4):944-948.
• [15]Vandyoussefi M,Greeer A L.Application of cellular automaton finite element model to the grain refinement of directionally solidified Al-4.15 wt%Mg alloys[J].Acta Materiala,2002,50(7):1693-1705.
• [16]KANG Xiu-hong,DU Qiang,LI Dian-zhong,et al.Modeling of the solidification microstructure evolution by coupling cellular automaton with macrotransport model[J].Acta Metallurgica Sinica-Chinese,2004,40(5):452-456.
• [17]Seppo Louhenkipi,Jyrki Miettienen,Lauri Holappa.Simulation of microstructure of as-cast steels in continuous casting[J].ISIJ International,2006,46(6):914-920.
• [18]FU Zhen-nan,XIONG Shou-mei.Microstructure simulation of die casting magnesium alloy[J].Materials Science Forum,2008,575-578:135-140.

文章评论(Comment)：