激光熔覆过程数值模拟研究现状

何逵; 曹知勤; 王玥坤; 张雪峰

doi:10.7513/j.issn.1004-7638.2021.03.026

激光熔覆过程数值模拟研究现状

doi: 10.7513/j.issn.1004-7638.2021.03.026

何逵^1,,
曹知勤¹,
王玥坤²,
张雪峰^{1, 2, ,}

1.
攀枝花学院钒钛学院，四川攀枝花 617000
2.
四川省钒钛产业技术研究院，四川攀枝花 617000

基金项目: 攀枝花市科技计划项目(2020CY-G-5)；攀枝花市钒钛产业领军人才集聚攻关计划；太阳能技术集成及应用推广四川省重点实验室项目(TYNSYS-2018-Y-04)

详细信息

作者简介:
何逵(1988—)，男，湖南衡阳人，博士研究生，讲师，主要从事激光熔覆数值模拟研究，E-mail：hekuiaaaa@163.com；

通讯作者:
张雪峰(1965—)，男，四川仁寿人，教授，主要从事钒钛功能材料研究，E-mail：532256335@qq.com

中图分类号: TG669，V261.8
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- 文章访问数: 1213
- HTML全文浏览量: 85
- PDF下载量: 120
- 被引次数: 0
出版历程
- 收稿日期: 2020-10-15
- 刊出日期: 2021-06-10

Current research status of numerical simulation for laser cladding process

He Kui^1
,,
Cao Zhiqin¹,
Wang Yuekun²,
Zhang Xuefeng^{1, 2
, ,}

1.
Institute of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, Sichuan, China
2.
Sichuan Vanadium & Titanium Industrial Technologies Research Institute, Panzhihua 617000, Sichuan, China

摘要

摘要: 激光熔覆是新型的增材制造及表面修复技术，已成为当今工业领域的研究热点。利用激光熔覆技术制备高性能的合金涂层，能够显著提高基材的耐磨、耐腐蚀、使用寿命等性能。通过对激光熔覆过程的温度场、残余应力、组织形变等的数值模拟研究进行阐述，总结了国内外目前针对上述物性参数的分布及演变规律分析所使用的数值模拟方法，揭示了残余应力、组织形变形成的机理，为获得高质量的熔覆涂层提供了一定的理论指导基础。展望了数值模拟技术在激光熔覆过程中的未来发展趋势。
- 激光熔覆 /
- 温度场 /
- 残余应力 /
- 组织形变 /
- 数值模拟
Abstract: Laser cladding is a new type of additive manufacturing and surface repair technology, which has become research hotspot in the industrial field. High performance alloy coating prepared by laser cladding technology can significantly improve the wear resistance, corrosion resistance and service life of the substrate. In this paper, the numerical simulation research of temperature field, residual stress and microstructure deformation in laser cladding process had been described. The numerical simulation methods used in analyzing the distribution and evolution of the above physical parameters at home and abroad was summarized. The formation mechanism of residual stress and fabric deformation were revealed, which provided a theoretical basis for obtaining high-quality cladding coating. Finally, the future development trend of numerical simulation technology in laser cladding process was prospected.
- laser cladding /
- temperature field /
- residual stress /
- microstructure deformation /
- numerical simulation

HTML全文

图 1 截面形貌与熔池深度对比^[18]

（a）模拟结果与试验结果对照；（b）实际试验熔覆层截面）

Figure 1. Comparison of section morphology and weld pool depth ^[18]

下载: 全尺寸图片幻灯片

图 2 三种功率下同一截面的温度梯度（K）分布^[19]

Figure 2. Temperature gradient (K) distribution of the same section under three different kinds of power ^[19]

下载: 全尺寸图片幻灯片

图 3 熔覆层冷却后残余应力云图与裂纹形貌^[29]

（a）表面残余应力分布；（b）横截面残余应力分布；（c）边缘区域裂纹形貌；（d）结合区裂纹形貌

Figure 3. Residual stress distribution and crack morphology of cladding layer after cooling^[29]

下载: 全尺寸图片幻灯片

图 4 纵截面凝固组织形貌^[32]

（a: 单向扫描模拟结果；b: 单向扫描电镜结果；c: 双向扫描模拟结果； d: 双向扫描电镜结果）

Figure 4. Morphology of solidification structure in longitudinal section ^[32]

下载: 全尺寸图片幻灯片

图 5 相场法模拟与试验测量得到的Ti-Nb合金枝晶图^[36]

（a: 试验结果；b: 模拟结果）

Figure 5. Dendrite diagram of Ti-Nb alloy obtained by phase field simulation and experimental measurement ^[36]

下载: 全尺寸图片幻灯片

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