Modeling and simulation of 3D geometry prediction and dynamic solidification behavior of Fe-based coatings by laser cladding

材料科学 温度梯度 涂层 过冷 机械 等轴晶 复合材料 传热 体积流量 微观结构 热力学 物理 量子力学
作者
Liaoyuan Chen,Zhao Yú,Boxue Song,Tianbiao Yu,Zhe Liu
出处
期刊:Optics and Laser Technology [Elsevier BV]
卷期号:139: 107009-107009 被引量:69
标识
DOI:10.1016/j.optlastec.2021.107009
摘要

To accurately predict the three-dimensional (3D) characteristics of the coating and dynamic solidification process during coaxial powder-fed laser cladding, an improved 3D multi-physics finite element model including heat transfer, fluid flow, shielding gas pressure, powder temperature-rise, surface tension, and free surface movement is proposed. The input parameters of the model only depend on the thermophysical properties of the deposited material and the process parameters. Therefore, the model has good universality, and can be flexibly applied in other laser cladding systems or deposited materials. The average width and height error for the experimental and simulated is 6.05% and 4.15%, respectively. The numerical model has good abilities to predict the 3D geometry of the coating. The accuracy of the model can be indeed improved by considering the powder temperature-rise and shielding gas pressure during the modeling process. The dynamic growth process of the coating, spatiotemporal variations of the temperature and temperature gradient were discussed in detail to reveal the solidification mechanism. Finally, the relationship between the crystal characteristic (planar, cellular, columnar, and equiaxed grains) and thermal parameters (the temperature, the temperature gradient, and the solidification rate) was established. The results show that the temperature gradient and undercooling at the solidification interface are significantly responsible for the crystal characteristic, while the grain size is mainly governed by the solidification rate.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
一颗馒头完成签到,获得积分10
刚刚
飒飒给飒飒的求助进行了留言
1秒前
2023204306324完成签到,获得积分20
1秒前
依灵完成签到,获得积分10
3秒前
香蕉觅云应助7733采纳,获得10
3秒前
6秒前
小猪完成签到,获得积分10
6秒前
8秒前
萌面大侠完成签到,获得积分10
8秒前
8秒前
金枪鱼完成签到,获得积分10
9秒前
sssssssssss完成签到,获得积分10
9秒前
mary发布了新的文献求助10
11秒前
研友_VZG7GZ应助hahaha123213123采纳,获得10
11秒前
枕星发布了新的文献求助10
13秒前
13秒前
14秒前
14秒前
求求大家了完成签到,获得积分10
14秒前
阳光完成签到,获得积分10
14秒前
Crystal完成签到 ,获得积分10
16秒前
17秒前
17秒前
18秒前
18秒前
18秒前
乐乐应助赖道之采纳,获得10
19秒前
19秒前
Sun_Chen完成签到,获得积分10
19秒前
体贴凌柏发布了新的文献求助10
20秒前
成就的笑南完成签到 ,获得积分10
20秒前
21秒前
21秒前
wyw123完成签到,获得积分10
21秒前
求大佬帮助完成签到,获得积分10
21秒前
李健的小迷弟应助zyq采纳,获得10
22秒前
陈隆完成签到,获得积分10
22秒前
哎呀完成签到 ,获得积分10
22秒前
量子星尘发布了新的文献求助10
23秒前
mary完成签到,获得积分10
23秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038368
求助须知:如何正确求助?哪些是违规求助? 3576068
关于积分的说明 11374313
捐赠科研通 3305780
什么是DOI,文献DOI怎么找? 1819322
邀请新用户注册赠送积分活动 892672
科研通“疑难数据库(出版商)”最低求助积分说明 815029