Influence of Forced Convection on Columnar Microstructure during Directional Solidification of Al - Ni alloys

机译：强制对流对Al-Ni合金定向凝固柱状组织的影响。

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This paper presents a summary of cellular and dendritic morphologies resulting from the upward directional solidification of Al - Ni alloys in a cylindrical crucible. We analysed the coupling of solid-liquid interface morphology with natural and forced convection. The influence of natural convection was first analyzed as a function of growth parameters (solute concentration, growth rate and thermal gradient). In a second step, the influence of axial vibrations on solidification microstructure was investigated by varying vibration parameters (amplitude and frequency). Experimental results were compared to preliminary numerical simulations and a good agreement is found for natural convection. In this study, the critical role of the mushy zone in the interaction between fluid flow and solidification microstructure is pointed out.

机译：本文概述了由Al-Ni合金在圆柱形坩埚中向上定向凝固产生的细胞和树突形态。我们分析了固液界面形态与自然对流和强迫对流的耦合。首先将自然对流的影响作为生长参数（溶质浓度，生长速率和热梯度）的函数进行分析。第二步，通过改变振动参数（振幅和频率）研究轴向振动对凝固组织的影响。将实验结果与初步数值模拟进行了比较，并发现自然对流具有良好的一致性。在这项研究中，指出了糊状区在流体流动与凝固组织之间相互作用中的关键作用。

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来源
《International Conference on Solidification and Gravity; 20040906-09; Miskolc-Lillafured(HU)》|2004年|P.181-186|共6页
会议地点 Miskolc-Lillafured(HU)
作者
H. Nguyen Thi; B.H. Zhou; G. Reinhart; B. Billia; Q.S. Liu; C.W. Lan; T.Lyubimova; B. Roux;
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作者单位

L2MP, UMR CNRS 6137, Universite Paul Cezanne (Aix-Marseille III), Marseille, France;

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原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;
关键词
directional solidification; cells and dendrites; vibrational control; natural convection; forced convection;

机译：定向凝固;孔洞和树枝状晶体;振动控制;自然对流;强制对流;

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机译：熔体对流对向下非稳态定向凝固Sn-Pb合金柱状-等轴转变及组织的影响
2. Influence of forced convection on the directional solidification of AlSi alloys: comparison of experiments and simulation [J] . Johannes Dagner, Jochen Friedrich, Georg Mueller Progress in computational fluid dynamics . 2009,第6a7期

机译：强制对流对AlSi合金定向凝固的影响：实验与模拟的比较
3. Influencing of the microstructure of directionally-solidified AlSi-alloys through definitively varied convection and through crystallization parameters Part2. simulation and experiment [J] . Paul Seibold, Hans M. Tensi Giessereiforschung . 2000,第1期

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4. Influence of Forced Convection on Columnar Microstructure during Directional Solidification of Al - Ni alloys [C] . H. Nguyen Thi, B. H. Zhou, G. Reinhart, International Conference on Solidification and Gravity . 2006

机译：Al - Ni合金定向凝固柱状微观结构强制对流的影响
5. Influence of solidification variables on the cast microstructure and porosity in directionally solidified Mar-M247. [D] . Whitesell, Harry Smith, III. 2002

机译：凝固变量对定向凝固Mar-M247中铸件组织和孔隙率的影响。
6. On oscillatory microstructure during cellular growth of directionally solidified Sn–36at.Ni peritectic alloy [O] . Peng Peng, Xinzhong Li, Jiangong Li, -1

机译：定向凝固Sn–36at。％Ni包晶合金细胞生长过程中的振荡微观结构
7. Influence of Forced Convection on Columnar Microstructure during Directional Solidification of Al- Ni alloys [O] . C. W. Lan, T. Lyubimova, B. Roux 2016

机译：强迫对流对al-Ni合金定向凝固过程中柱状组织的影响

Influence of Forced Convection on Columnar Microstructure during Directional Solidification of Al - Ni alloys

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