Numerical investigation of laser deposited Al-based coatings on Ti-6Al-4V alloy

机译：Ti-6Al-4V合金上激光沉积Al基涂层的数值研究

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Titanium Alloy (Ti6Al4V) opened a wide range of useful applications in aerospace industries; these industries make use of different additive manufacturing (AM) techniques to obtain parts of different properties for different uses by this titanium alloy. Ttitanium alloy mainly stands out due to the properties such as high specific strength to weight ratio, and excellent corrosion resistance. Despite these benefits, the formation of defects such as pores and cracks play a vital role in the quality of the deposited coatings. The presence of these unwanted artefacts on laser deposited coatings depends on the melting, cooling and solidification of the melt pool. In this research, a simulation of the heat transfers and fluid dynamics of the melt pool is developed to predict the process parameters and reinforcement proportions on the clad geometry quality. The results were compared to the experimental results for confirmation and validation. Numerical modelling using COMSOL multiphysics 5.2 revealed the thermal behaviour of the coated samples.

机译：钛合金（Ti6Al4V）在航空航天工业中开辟了广泛的有用应用。这些行业利用不同的增材制造（AM）技术来获得该钛合金具有不同用途的不同性能的零件。钛合金主要由于诸如高比强度/重量比和优异的耐腐蚀性的特性而脱颖而出。尽管有这些好处，但缺陷（如气孔和裂纹）的形成对沉积涂层的质量起着至关重要的作用。这些不需要的伪像在激光沉积涂层上的存在取决于熔池的熔化，冷却和固化。在这项研究中，对熔池的传热和流体动力学进行了仿真，以预测工艺参数和强化比例对熔覆层几何形状质量的影响。将结果与实验结果进行比较以进行确认和验证。使用COMSOL Multiphysics 5.2进行的数值建模揭示了涂层样品的热行为。

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来源
《2018 IEEE 9th International Conference on Mechanical and Intelligent Manufacturing Technologies》|2018年|85-90|共6页
会议地点 Cape Town(ZA)
作者
Olawale S. Fatoba; Stephen A. Akinlabi; Esther T. Akinlabi;
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作者单位

Department of Mechanical Engineering Science, University of Johannesburg, Johannesburg, South Africa;

Department of Mechanical and Industrial Engineering Technology, University of Johannesburg, Johannesburg, South Africa;

Department of Mechanical Engineering Science, University of Johannesburg, Johannesburg, South Africa;

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原文格式 PDF
正文语种 eng
中图分类
关键词
Laser beams; Powders; Substrates; Geometry; Heating systems; Heat transfer;

机译：激光束;粉末;基材;几何形状;加热系统;传热;;

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1. 原位激光沉积NiTi涂层提高Ti-6Al-4V合金的耐腐蚀性能 [J] . M. N. MOKGALAKA, A. P. I. POPOOLA, S. L. PITYANA 中国有色金属学报（英文版） . 2015,第010期
2. 原位激光沉积NiTi涂层提高Ti-6Al-4V合金的耐腐蚀性能 [J] . M.N.MOKGALAKA, A.P.I.POPOOLA, S.L.PITYANA 中国有色金属学报：英文版 . 2015,第010期
3. Laser gas assisted nitriding and tin coating of Ti-6Al-4V alloy: Experimental and numerical investigation of mechanical properties [J] . B. S. Yilbas, M. Sunar, Z. Gasem, Journal of Materials Processing Technology . 2009,第3期

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5. Evaluation of microstructure, microhardness, and electrochemical properties of laser-deposited Ti-Co coatings on Ti-6Al-4V Alloy [J] . Fatoba O. S., Adesina O. S., Popoola A. P. I. The International Journal of Advanced Manufacturing Technology . 2018,第5a8期

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6. Numerical investigation of laser deposited Al-based coatings on Ti-6Al-4V alloy [C] . Olawale S. Fatoba, Stephen A. Akinlabi, Esther T. Akinlabi International Conference on Mechanical and Intelligent Manufacturing Technologies . 2018

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Numerical investigation of laser deposited Al-based coatings on Ti-6Al-4V alloy

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