Modelling of powder consolidation using electro heating assisted by mechanical loading

2nd International Conference on Rheology and Modeling of Materials

Knyazeva, A.^1,2 ; Sorokova, S.^1

Tomsk Polytechnik University, Tomsk, Russia^1

Institute if Strength Physics and Material Science SB RAS, Tomsk, Russia^2

关键词: Effective viscosity;    Electrical heating;    Mechanical loading;    Powder consolidations;    Reactive sintering;    Special algorithms;    Thermal conduction equation;    Viscous dissipation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/790/1/012012/pdf
DOI  :  10.1088/1742-6596/790/1/012012

来源: IOP

【 摘 要 】

The model of the process of reactive sintering assisted by mechanical loading is suggested. The conjugate heat exchange of powder mixture is taken into account. The powder mixture motion is described as viscous liquid with effective viscosity. Mechanical sub problem is one dimensional because friction near the wall is assumed negligible small. Conjugate thermal conductivity problem includes thermal conduction equations for various materials (reactive mixture and walls of the camber. Heat release is possible due to external electrical heating, viscous dissipation and chemical reactions. Kinetical equations correspond to detailed reaction scheme. The problem is solved numerically with special algorithm. As a result the composition of the mixture is obtained for different time moments. The final composition is not uniform.