王杰锋,葛鸿浩,徐瀚宗,张群莉,姚建华.感应洛伦兹力对激光熔覆Inconel 718涂层中Fe元素分布的影响[J].稀有金属材料与工程,2021,50(8):2799~2806.[Wang Jiefeng,Ge Honghao,Xu Hanzong,Zhang Qunli,Yao Jianhua.Effects of Induced Lorentz Force on Fe Element Distribution In Laser Cladding Inconel 718 coatings[J].Rare Metal Materials and Engineering,2021,50(8):2799~2806.]
感应洛伦兹力对激光熔覆Inconel 718涂层中Fe元素分布的影响
投稿时间:2020-09-08  修订日期:2020-10-13
中文关键词:  激光熔覆  稳态磁场  元素分布  数值模拟
基金项目:国家重点研发计划(2018YFB0407300);国家自然科学基金(51804274);浙江省省属高校基本科研业务费项目(RF-C2019003)
中文摘要:
      为了研究稳态磁场对激光熔覆Inconel 718涂层中Fe元素分布的影响。建立基于体积平均法的三相混合凝固模型,在激光熔覆过程中耦合加入稳态磁场,模拟316L不锈钢表面制备Inconel 718涂层。采用2D瞬态模型,结合传热传质,流体流动和感应洛伦兹力,模拟激光熔覆涂层中的元素分布,并与实验结果进行对比。结果表明,未施加磁场时熔覆层中Fe元素呈均匀分布;施加稳态磁场时熔覆层中Fe元素分布不均匀,在熔覆层顶部Fe元素含量较低,熔覆层底部Fe元素含量较高。模拟结果与实验结果吻合良好,证明计算模型的可靠性,也表明稳态磁场能够抑制熔池流动,对移动熔池的传热传质产生影响,最终改变激光熔覆涂层中的元素分布。
Effects of Induced Lorentz Force on Fe Element Distribution In Laser Cladding Inconel 718 coatings
英文关键词:laser cladding  steady magnetic field  element distribution  numerical simulation
英文摘要:
      In order to study the effect of steady magnetic field on Fe element distribution in laser cladding Inconel 718 coatings. A three-phase mixed solidification model based on volume average method was established. The steady magnetic field was coupled into the laser cladding process to simulate the preparation of Inconel 718 coatings on 316L stainless steel. The 2D transient model, combined with heat and mass transfer, fluid flow and Induced Lorentz force, was used to simulate the distribution of element in the laser cladding coatings and compared with the experimental results. The results show that the Fe element content in the cladding layer is uniform when no magnetic field is applied; However, the Fe element content in the cladding layer is uneven when the steady magnetic field is applied, the Fe element content in the top of the cladding layer is lower than that in the bottom of the cladding layer. The simulation results are in good agreement with the experimental results, which proves the reliability of the calculation model. It also shows that the steady magnetic field can inhibit the flow of the molten pool, affect the heat and mass transfer of the moving molten pool, and ultimately change the element distribution in the laser cladding coating.
作者单位E-mail
王杰锋 浙江工业大学 激光先进制造研究院 2720188651@qq.com 
葛鸿浩 浙江工业大学 激光先进制造研究院 gehh@zjut.edu.cn 
徐瀚宗 浙江工业大学 激光先进制造研究院  
张群莉 浙江工业大学 激光先进制造研究院  
姚建华 浙江工业大学 激光先进制造研究院  
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