Simulation of Columnar Crystal Growth in Forced Flow of VAR Based on Phase Field Method

Zhou Yang; Zhu Hongchun; Li Huabing; Jiang Zhouhua; He Zhiyu; Ni Zhuowen

doi:10.20057/j.1003-8620.2024-00078

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Simulation of Columnar Crystal Growth in Forced Flow of VAR Based on Phase Field Method

Smelting and Solidification | 更新时间：2025-05-09

- Simulation of Columnar Crystal Growth in Forced Flow of VAR Based on Phase Field Method
- Special Steel Vol. 45, Issue 4, Pages: 41-46(2024)
- 作者机构：
  
  东北大学冶金学院，沈阳 110819
- 作者简介：
- 基金信息：
- DOI：10.20057/j.1003-8620.2024-00078
  CLC： TF132
- Received：04 April 2024，
  
  Published：30 July 2024
- 稿件说明：
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周杨,朱红春,李花兵等.基于相场法模拟VAR强迫流场中柱状晶生长[J].特殊钢,2024,45(04):41-46.

Zhou Yang,Zhu Hongchun,Li Huabing,et al.Simulation of Columnar Crystal Growth in Forced Flow of VAR Based on Phase Field Method[J].Special Steel,2024,45(04):41-46.
周杨,朱红春,李花兵等.基于相场法模拟VAR强迫流场中柱状晶生长[J].特殊钢,2024,45(04):41-46. DOI： 10.20057/j.1003-8620.2024-00078.

Zhou Yang,Zhu Hongchun,Li Huabing,et al.Simulation of Columnar Crystal Growth in Forced Flow of VAR Based on Phase Field Method[J].Special Steel,2024,45(04):41-46. DOI： 10.20057/j.1003-8620.2024-00078.

摘要

基于相场法建立了流-热-质全耦合模型，模拟了真空自耗电弧重熔（VAR）过程铸锭柱状晶在强制流场中的生长。对比柱状晶在有无流场条件下的生长特征解析熔体流动对柱状晶生长的影响机制。模拟结果表明，凝固前沿流场速度大小为45 μm/s，方向与枝晶生长方向垂直时，二次枝晶表现出“迎流”生长，枝晶干受冲刷作用向下游倾斜；相邻枝晶形成细小涡流，枝晶干上游侧溶质和热量随熔体带入下游侧，上游侧溶质和温度边界层厚度减小，由无流场时的51 μm降至31.5 μm，温度梯度大促进二次枝晶发展；下游侧边界层溶质和热量富集程度大，边界层厚度增至78 μm，梯度减小明显抑制二次枝晶发展。下游溶质浓度高于无流场情况，枝晶生长缓慢增大微观偏析风险。

Abstract

A fully coupled flow heat mass model was established based on the phase field method to simulate the growth of columnar crystals in ingots during vacuum arc remelting （VAR） in a forced flow field. The influence mechanism of melt flow on the growth of columnar crystals was analyzed by comparing the growth characteristics of columnar crystals with and without flow field conditions.The simulation results indicated that when the velocity of flow field in the solidification front is 45 μm/s and the direction is perpendicular to the direction of dendrite growth， the secondary dendrites exhibit ‘counter-flow’ growth， and the dendrite trunks tilt downstream due to erosion. A small eddy current is formed between adjacent dendrites， and the solutes and the heat in the upstream of the dendrite trunks are carried into the downstream side with the melt. The boundary layer thickness of the solute and the temperature on the upstream side decreases， from 51 μm in the absence of a flow field to 31.5 μm. The large temperature gradient promotes the development of secondary dendrites. The concentration of solutes and heat in the downstream boundary layer is high， and the boundary layer thickness increases to 78 μm. The decrease in gradient significantly inhibits the development of secondary dendrites. The downstream solute concentration is higher than that in the absence of a flow field， and the slow growth of dendrites increases the risk of micro-segregation.

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references

姜周华，董艳伍，李花兵，等 . 特殊钢特种冶金技术的新发展［J］. 中国冶金， 2011 ， 21 （ 12 ）： 1 - 10 .

何曲波，王东哲，刘海定，等 . VIM-ESR-VAR三联冶炼工艺对9Cr18Mo轴承钢洁净度的影响［J］. 特殊钢， 2018 ， 39 （ 1 ）： 24 - 27 .

Wang Y D ， Zhang L F ， Zhang J ， et al . Simulation of Solidification Structure During Vacuum Arc Remelting Using Cellular Automaton-Finite Element Method ［J］. steel research international ， 2022 ， 93 （ 1 ）： 2100408 .

宁静，王敖，毕正绪，等 . 基于仿真的M54超高强度钢真空自耗重熔工艺优化［J］. 特殊钢， 2023 ， 44 （ 5 ）： 60 - 68 .

姜周华， Lev Medovar ， Ganna Stovpchenko ，等 . 第二代液态电渣冶金技术的发展［J］. 钢铁研究学报， 2013 ， 25 （ 3 ）： 1 - 7 .

王晓辉，张雪凌，王林，等 . 低成本耐腐蚀高强度不锈钢的成分均匀性控制研究［J］. 特殊钢， 2023 ， 44 （ 5 ）： 69 - 75 .

常荷茜 . 铝合金焊接熔池凝固过程枝晶生长相场法模拟［D］. 石家庄：河北科技大学， 2022 .

Lenart R ， Eshraghi M . Modeling columnar to equiaxed transition in directional solidification of Inconel 718 alloy ［J］. Computational Materials Science ， 2020 ， 172 （ C ）： 109374 .

Zhang A ， Jiang B ， Guo Z P ， et al . Solution to Multiscale and Multiphysics Problems： A Phase‐Field Study of Fully Coupled Thermal‐Solute‐Convection Dendrite Growth ［J］. Advanced Theory and Simulations ， 2021 ， 4 （ 3 ）： 2000251 .

Nabavizadeh S A ， Eshraghi M ， Felicelli S D . Three-dimensional phase field modeling of columnar to equiaxed transition in directional solidification of Inconel 718 alloy ［J］. Journal of Crystal Growth ， 2020 ， 549 ： 125879 .

Yu A S ， Yang X J ， Guo H M . Phase field lattice Boltzmann model for non-dendritic structure formation in aluminum alloy from LSPSF machine ［J］. Transactions of Nonferrous Metals Society of China ， 2020 ， 30 （ 3 ）： 559 - 570 .

Yang S L ， Tian Q ， Yu P ， et al . Numerical simulation and experimental study of vacuum arc remelting （VAR） process for large-size GH4742 superalloy ［J］. Journal of Materials Research and Technology ， 2023 ， 24 ： 2828 - 2838 .

Ohno M ， Matsuura K . Quantitative phase-field modeling for dilute alloy solidification involving diffusion in the solid ［J］. Physical Review E，，Statistical， Nonlinear， and Soft Matter Physics ， 2009 ， 79 （ 3 ）： 031603 .

Zhang A ， Guo Z P ， Jiang B ， et al . Effect of laser shock on lamellar eutectic growth： A phase-field study ［J］. International Journal of Heat and Mass Transfer ， 2022 ， 183 ： 122069 .

Takaki T ， Sakane S ， Ohno M ， et al . Large–scale phase–field lattice Boltzmann study on the effects of natural convection on dendrite morphology formed during directional solidification of a binary alloy ［J］. Computational Materials Science ， 2020 ， 171 ： 109209 .

Jaehoon L ， Munekazu O ， Yasushi S ， et al . Uniquely selected primary dendrite arm spacing during competitive growth of columnar grains in Al–Cu alloy ［J］. Journal of Crystal Growth ， 2021 ， 558 ： 126014 .

Badillo A ， Beckermann C . Phase-field simulation of the columnar-to-equiaxed transition in alloy solidification ［J］. Acta Materialia ， 2006 ， 54 （ 8 ）： 2015 - 2026 .

Guo Z P ， Mi J ， Xiong S ， et al . Phase field simulation of binary alloy dendrite growth under thermal- and forced-flow fields： An implementation of the parallel–multigrid approach ［J］. Metallurgical and Materials Transactions B ， 2013 ， 44 （ 4 ）： 924 - 937 .

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