Numerical simulation of the flow field and temperature field in direct-chill casting of 2024 aluminium alloy under the influence of intensive melt shearing

被引：14
作者：
Wang, Jinchuan [1 ,2 ]
Zuo, Yubo [1 ,2 ]
Zhu, Qingfeng [1 ,3 ]
Wang, Rui [1 ,2 ]
机构：
[1] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China
[2] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
[3] Minist Educ, Engn Res Ctr Adv Mat Preparing Technol, Shenyang 110819, Liaoning, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2023年 / 22卷
基金：
中国国家自然科学基金;
关键词：
Aluminium alloy; DC casting; Intensive melt shearing; Flow field; Temperature field; MC-DC; GRAIN-REFINEMENT; AZ91D ALLOY; SOLIDIFICATION; MICROSTRUCTURE; NUCLEATION; MECHANISMS;
D O I：
10.1016/j.jmrt.2022.12.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the direct-chill (DC) casting process, the application of intensive melt shearing has a significant grain refining effect on the ingot. Understanding the variation of the flow field and temperature field during the DC casting process under the influence of intensive melt shearing is very important to study the mechanism of grain refinement. In this paper, the COMSOL software was used to simulate the flow field and temperature field in the process of DC casting4300 mm ingots of 2024 aluminium alloy under different casting conditions. The influence of intensive melt shearing and casting speed on the flow field and temper-ature field were studied. The results showed that intensive melt shearing can increase the width of two-phase zone, change the morphology of the sump, and significantly enhance the convection of the melt. (c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
引用
收藏
页码：1491 / 1504
页数：14
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