Heat and Mass Transfer under Laser Sintering of a Powder Mixture

V. G. Niz’ev; F. Kh. Mirzade; V. Ya. Panchenko; V. M. Chechetkin; G. V. Ustiugova

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Heat and Mass Transfer under Laser Sintering of a Powder Mixture

机译：粉末混合物激光烧结下的传热传质

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A model of heat and mass transfer during the sintering process of a two-component powder mixture under the action of laser beam irradiation was formulated and numerically investigated. The model accounts for the movement of solid particles in a shrinkage caused by the changed density of the powder mixture, as well as for convective fluxes caused by surface forces and gravity. The flow of the liquid phase of the low-melting component of the mixture was described by the generalized Darcy law. The space-inhomogeneous and non-steady distributions of the phase saturations and the temper-ature field were estimated to predict the dynamics of the phase change process depending on the prop- erties of the powder mixture (porosity, penetration, and thermal properties of components), and depending on the parameters of the laser beam. The effect of surface subsidence of the powder mixture has been considered.

机译：建立并模拟了二组分粉末混合物在激光辐照作用下烧结过程中的传热传质模型。该模型考虑了固体颗粒在粉末混合物密度变化引起的收缩中的运动，以及由表面力和重力引起的对流通量。混合物的低熔点组分的液相的流动由广义达西定律描述。估计相饱和度和温度场的空间非均匀和非稳态分布，以根据粉末混合物的性质（组分的孔隙率，渗透性和热性质）预测相变过程的动力学。），并取决于激光束的参数。已经考虑了粉末混合物的表面沉降的影响。

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《Mathematical models and computer simulations》 |2012年第2期|共9页
作者
V. G. Niz’ev; F. Kh. Mirzade; V. Ya. Panchenko; V. M. Chechetkin; G. V. Ustiugova;
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正文语种 eng
中图分类数学;
关键词
laser sintering; powder mixture; melting; mass-heat transfer; Darcy’s law;

机译：激光烧结;粉末混合物;熔融;传热;达西定律;

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1. Heat and Mass Transfer under Laser Sintering of a Powder Mixture [J] . V. G. Niz’ev, F. Kh. Mirzade, V. Ya. Panchenko, Mathematical models and computer simulations . 2012,第2期

机译：粉末混合物激光烧结下的传热传质
2. On the role of heat and mass transfer into laser processability during selective laser melting AlSi12 alloy based on a randomly packed powder-bed [J] . Wang Lianfeng, Yan Biao, Guo Lijie, Modern Physics Letters, B. Condensed Matter Physics, Statistical Physics, Applied Physics . 2018,第10期

机译：基于随机填充粉床的选择性激光熔融Alsi12合金中的热量和质量传递到激光加工性的作用
3. Process prediction of selective laser sintering based on heat transfer analysis for polyamide composite powders [J] . Xiaoyong Tian, Gang Peng, Mengxue Yan, International Journal of Heat and Mass Transfer . 2018,第may期

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4. HEAT TRANSFER, PHASE CHANGE AND COALESCENCE OF PARTICLES DURING SELECTIVE LASER SINTERING OF METAL POWDERS [C] . Ram Dayal, Tatiana Gambaryan-Roisman, Eberhard Abele International Symposium on Advances in Computational Heat Transfer . 2012

机译：金属粉末选择性激光烧结过程中颗粒的传热，相变和聚结
5. Experimental Investigation of Heat Transfer in Laser Sintered and Wire Mesh Heat Exchangers [D] . Rezaey, Reza. 2017

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机译：Ni-Ti-Al粉末混合物加热过程中的反应烧结机理及相形成
7. Mechanisms of selective laser sintering and heat transfer in Ti powder [O] . Tolochko Nikolay K., Arshinov Maxim K., Gusarov Andrey V., 2003

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Heat and Mass Transfer under Laser Sintering of a Powder Mixture

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