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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

何逵, 曹知勤, 王玥坤, 张雪峰. 激光熔覆过程数值模拟研究现状[J]. 钢铁钒钛, 2021, 42(3): 172-179. doi: 10.7513/j.issn.1004-7638.2021.03.026
引用本文: 何逵, 曹知勤, 王玥坤, 张雪峰. 激光熔覆过程数值模拟研究现状[J]. 钢铁钒钛, 2021, 42(3): 172-179. doi: 10.7513/j.issn.1004-7638.2021.03.026
He Kui, Cao Zhiqin, Wang Yuekun, Zhang Xuefeng. Current research status of numerical simulation for laser cladding process[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 172-179. doi: 10.7513/j.issn.1004-7638.2021.03.026
Citation: He Kui, Cao Zhiqin, Wang Yuekun, Zhang Xuefeng. Current research status of numerical simulation for laser cladding process[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 172-179. 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
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

Current research status of numerical simulation for laser cladding process

  • 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。
  • 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]

    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]

    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]

    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]

    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]

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  • 收稿日期:  2020-10-15
  • 刊出日期:  2021-06-10

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