Cellular automaton modelling for the deflection of columnar grains of high-carbon steel with melt flow
Cellular automaton modelling for the deflection of columnar grains of high-carbon steel with melt flow
复制标题
高碳钢柱状晶随熔体流动偏转的元胞自动机建模
DOI：
10.1080/03019233.2019.1665939
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发表时间：
2019-09
影响因子：
2.1
通讯作者：
Zhu Miaoyong
中科院分区：
文献类型：
--
作者：
Wang Zhaohui;Luo Sen;Wang Weiling;Zhu Miaoyong
在熔体流动条件下生长的柱状晶的偏转是合金凝固组织的特征，对制品的性能有很大影响。采用元胞自动机（CA）方法建立了熔体流动中晶粒长大的模型。通过与解析模型的比较验证了该模型的有效性，并将其用于研究高碳钢中柱状晶的偏转。柱状晶的偏转角随流速的增大而增大，随熔体过冷度的增大而减小。在0.10 m s-1的流速和2°C的熔体过冷度下，实现了18.2°的最大偏转角。 模型预测的偏转角与经验值吻合较好。熔体流动被发现，以促进晶粒的优先生长方向朝着上游方向超过其他。这种流动影响的选择机制是柱状晶偏转的关键原因。
The deflection of columnar grains grown under melt flow is characteristic of the alloy solidification structure and strongly influences the performance of products. Here, a model of grain growth in melt flow was established with the cellular automaton (CA) method. After validation by comparison to an analytical model, the model was used to investigate the deflection of columnar grains in high-carbon steel. The deflection angle of columnar grains increases with the flow velocity and decreases with the melt undercooling. At the flow velocity of 0.10 m s–1 and the melt undercooling of 2°C, a maximum deflection angle of 18.2° is achieved. The deflection angles predicted by the model agree well with the empirical values. The melt flow was found to promote the grains with a preferred growth orientation towards the upstream direction over others. This flow-influenced selection mechanism is a key reason for the deflection of columnar grains.
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影响因子：
1.8
作者：
T. Okamoto;K. Kishitake;I. Bessho
通讯作者：
T. Okamoto;K. Kishitake;I. Bessho
影响因子：
--
作者：
H. Abe;K. Togano
通讯作者：
H. Abe;K. Togano
影响因子：
2.1
作者：
Xiaoxuan Deng;C. Ji;Wenliang Dong;Lin-ping Li;X. Yin;Yindong Yang;A. Mclean
通讯作者：
Xiaoxuan Deng;C. Ji;Wenliang Dong;Lin-ping Li;X. Yin;Yindong Yang;A. Mclean
DOI：
10.2355/tetsutohagane1955.61.9_2198
发表时间：
1975-07
影响因子：
0.3
作者：
Tadayoshi Takahashi;K. Ichikawa;Masayuki Kudou;Kouichi Shimahara
通讯作者：
Tadayoshi Takahashi;K. Ichikawa;Masayuki Kudou;Kouichi Shimahara
DOI：
10.1016/0001-6160(84)90030-0
发表时间：
1984-06
期刊：
Acta Metallurgica
影响因子：
--
作者：
K. Murakami;Hiroyuki Aihara;T. Okamoto
通讯作者：
K. Murakami;Hiroyuki Aihara;T. Okamoto