Numerical study of heat transfer and solute distribution in hybrid laser-MIG welding | |
Chen XY(陈旭阳)1,2; Yu G(虞钢)1,2; He XL(何秀丽)1,2; Li SX(李少霞)1,2; Li ZY(李志永)1,2 | |
通讯作者 | Yu, Gang(gyu@imech.ac.cn) ; He, Xiuli(xlhe@imech.ac.cn) |
发表期刊 | INTERNATIONAL JOURNAL OF THERMAL SCIENCES |
2020-03-01 | |
卷号 | 149页码:12 |
ISSN | 1290-0729 |
摘要 | In the quest for the transport mechanism in the molten pool during hybrid laser-MIG welding of aluminum alloy, an improved three-dimensional numerical model is developed. A modified model for laser heat source is utilized to investigate the energy absorption mechanism in keyhole. Some driving forces are considered to simulate the fluid flow, such as electromagnetic force, surface tension and buoyancy. The effects of arc pressure and droplet impact are taken into account to track the free surface. Several dimensionless numbers are utilized to analyze the relative importance of driving forces. The temperature field, liquid velocity field and magnesium and zinc distribution are numerically and experimentally studied. Results shows that the laser beam create a great impression on the heat transfer, fluid flow, solute distribution and weld bead geometry. In MIG welding, there is an insufficient mixing zone at the front of the pool, while the solute distribution in hybrid laser-MIG welding is observed more uniform. Magnesium and zinc are found concentrated in lower and upper part of the molten pool, respectively. The mathematical model is well validated by the experimental observations, and the calculated element distribution agrees well with the experimental measurements. Furthermore, the improved model provides an effective method for parametric optimization to improve the properties of hybrid laser-MIG welding joints. |
关键词 | Hybrid laser-MIG welding Aluminum alloy Heat transfer Solute distribution |
DOI | 10.1016/j.ijthermalsci.2019.106182 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000505769100025 |
关键词[WOS] | PHASE CHANGE SYSTEMS ; SPECIES TRANSPORT ; CONTINUUM MODEL ; ALUMINUM-ALLOYS ; FLUID-FLOW ; SIMULATION ; SOLIDIFICATION ; MOMENTUM ; SURFACE |
WOS研究方向 | Thermodynamics ; Engineering |
WOS类目 | Thermodynamics ; Engineering, Mechanical |
资助项目 | National Natural Science Foundation of China[11672304] ; National Natural Science Foundation of China[11502269] |
项目资助者 | National Natural Science Foundation of China |
论文分区 | 一类 |
力学所作者排名 | 1 |
RpAuthor | Yu, Gang ; He, Xiuli |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/81257 |
专题 | 先进制造工艺力学实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Chen XY,Yu G,He XL,et al. Numerical study of heat transfer and solute distribution in hybrid laser-MIG welding[J]. INTERNATIONAL JOURNAL OF THERMAL SCIENCES,2020,149:12. |
APA | 陈旭阳,虞钢,何秀丽,李少霞,&李志永.(2020).Numerical study of heat transfer and solute distribution in hybrid laser-MIG welding.INTERNATIONAL JOURNAL OF THERMAL SCIENCES,149,12. |
MLA | 陈旭阳,et al."Numerical study of heat transfer and solute distribution in hybrid laser-MIG welding".INTERNATIONAL JOURNAL OF THERMAL SCIENCES 149(2020):12. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Jp2020051.pdf(4252KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
Lanfanshu学术 |
Lanfanshu学术中相似的文章 |
[陈旭阳]的文章 |
[虞钢]的文章 |
[何秀丽]的文章 |
百度学术 |
百度学术中相似的文章 |
[陈旭阳]的文章 |
[虞钢]的文章 |
[何秀丽]的文章 |
必应学术 |
必应学术中相似的文章 |
[陈旭阳]的文章 |
[虞钢]的文章 |
[何秀丽]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论