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Rheological models of pressure sintering of powders

  • Theory and Technology of Sintering, Thermal and Thermochemical Treatment
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Powder Metallurgy and Metal Ceramics Aims and scope

Rheological models of deformable bodies are used to develop a dynamic approach to the problem of mechanical actions on porous bodies during pressure sintering. Solutions of dynamic systems describing the force acting on porous viscoelastic bodies, either strain-hardenable or not, are presented depending on the control parameters of the systems. These parameters are determined by the inertial properties and rigidity of the machine and the rheological properties of the deformable bodies. The intensity of densification during the pressure sintering of porous bodies mainly depends on the ratio of rigidity of the system to the viscous resistance of the body. The simulation and analysis of the pressure sintering of porous bodies using the obtained solutions enable prediction of their densification conditions and functional properties depending on the machine characteristics and the sizes and rheological properties of deformable bodies.

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Authors and Affiliations

  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev, Ukraine

    M. S. Kovalchenko

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  1. M. S. Kovalchenko
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Correspondence to M. S. Kovalchenko.

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Translated from Poroshkovaya Metallurgiya, Vol. 52, No. 1–2 (489), pp. 11–28, 2013.

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Kovalchenko, M.S. Rheological models of pressure sintering of powders. Powder Metall Met Ceram 52, 7–19 (2013). https://doi.org/10.1007/s11106-013-9490-1

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  • DOI: https://doi.org/10.1007/s11106-013-9490-1

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