基于元胞自动机CA的形核和长大模型与宏观传热模型相耦合对双辊连续铸轧纯铝薄带凝固微观组织进行了模拟,模拟计算中采用连续性异质形核模型和修正的枝晶尖端生长动力学模型(KGT).另外,模拟研究了铸轧工艺参数和金属凝固参数对双辊连续铸轧纯铝薄带凝固微观组织的影响规律.模拟结果可很好地解释和预测啮合点前柱状晶和等轴晶之间的转化和晶粒尺寸大小,柱状晶主要分布在靠近铸轧辊面附近,等轴晶则是远离铸轧辊面而靠近薄带的中心区域.
参考文献
| [1] | W.J.Boettinger;S.R.Coriell .Solidification microstructures: recent developments, future directions[J].Acta materialia,2000(1):43-70. |
| [2] | 许庆彦,冯伟明,柳百成,熊守美.铝合金枝晶生长的数值模拟[J].金属学报,2002(08):799-803. |
| [3] | J.W. Bae;C.G. Kang;S.B. Kang .Mathematical model for the twin roll type strip continuous casting of magnesium alloy considering thermal flow phenomena[J].Journal of Materials Processing Technology,2007(1/3):251-255. |
| [4] | PAPPAZ M;GANDIN C A .Probabilistic modelling of microstructure formation in solidification processes[J].Acta Metallurgica Et Materialia,1993,41(02):345-360. |
| [5] | WANG Y C;BECKRMANN C .Multi-scale-phase modeling of dendrite alloy solidification,transport phenomena in solidification[J].ASME Heat Transfer Division,1994,284:75-95. |
| [6] | BROWN D J;HUNT J D.A model of columnar growth using a front-tracking technique[A].Aachen,Germany,2000:437-444. |
| [7] | 马长文,沈厚发,黄天佑,柳百成.等轴晶移动对宏观偏析影响的数值模拟[J].材料研究学报,2004(03):232-238. |
| [8] | Guangyue Zhang;Tao Jing;Baicheng Liu .Microstructure simulation of aluminum alloy casting using phase field method[J].International Journal Cast Metals Research,2002(3):237-240. |
| [9] | 朱昌盛,王智平,荆涛,柳百成.Phase-field simulation of dendritic sidebranching induced by thermal noise[J].中国有色金属学会会刊（英文版）,2004(06):1106-1110. |
| [10] | GUO J J;LI X Z;SU Y Q .Phase field simulation of structure evolution at high growth velocities during directional solidification of 55 % Ti-45 % Al alloy[J].Intermetallics,2005,13:275-279. |
| [11] | 朱耀产,杨根仓,王锦程,赵达文,樊建锋.二元共晶定向凝固的多相场法数值模拟[J].中国有色金属学报,2005(07):1026-1032. |
| [12] | LI Xin-zhong;GUO Jing-jie;SU Yan-qing .Phase-field simulation of dendritic growth for binary alloys with complicate solution models[J].Transactions of Nonferrous Metals Society of China,2005(4):769-776. |
| [13] | 赵红兆,荆涛,柳百成.铝合金三维枝晶生长相场模拟[J].金属学报,2005(05):491-495. |
| [14] | 李梅娥,杨根仓,周尧和.二元合金高速定向凝固过程的相场法数值模拟[J].物理学报,2005(01):454-459. |
| [15] | 杨玉娟,王锦程,朱耀产,张玉祥,杨根仓.自由共晶生长的多相场等温数值模拟[J].稀有金属材料与工程,2007(04):573-577. |
| [16] | Lazaro Beltran-Sanchez;Doru M. Stefanescu .A Quantitative Dendrite Growth Model and Analysis of Stability Concepts[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2004(8):2471-2485. |
| [17] | ZHU M F;LEE S Y;HONG C P .Modified cellular automaton model for the prediction of dendrite growth with melt convection[J].Physical Review E,2004,69(61):061610-1-061610-12. |
| [18] | 许庆彦,冯伟明,柳百成.Coupled macro-micro modeling for prediction of grain structure of Al alloy[J].中国有色金属学会会刊(英文版),2004(01):71-77. |
| [19] | 康秀红,杜强,李殿中,李依依.用元胞自动机与宏观传输模型耦合方法模拟凝固组织[J].金属学报,2004(05):452-456. |
| [20] | 陈晋,朱鸣芳,孙国雄.用CA方法模拟过冷熔体中自由树枝晶的生长[J].金属学报,2005(08):799-803. |
| [21] | 王狂飞,李邦盛,米国发,郭景杰,傅恒志.Ti44Al合金胞/枝晶转变及其生长过程的数值模拟[J].金属学报,2007(02):211-216. |
| [22] | LIU X B;XU Q Y;JING T et al.Research on microstructure of aluminum twin-roll casting based on cellular automation[J].Transactions of Nonferrous Metals Society of China,2008,18(04):944-948. |
| [23] | 胡汉起.金属凝固原理[M].北京:机械工业出版社,1991 |
| [24] | LANGER J S;MULLER-KRUMBNAAR H .Stability effects in dendrite crystal growth[J].Journal of Crystal Growth,1977,42:11-14. |
| [25] | LIU Xiao-bo,XU Qing-yan,JING Tao,LIU Bai-cheng.Simulation of microstructures in solidification of aluminum twin-roll casting based on CA[J].中国有色金属学会会刊（英文版）,2009(02):422-427. |
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