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Computer modelling of warm powder compaction in rigid dies: Effect of nonuniform heating

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Powder Metallurgy and Metal Ceramics Aims and scope

Abstract

Computer modelling is used to study warm compaction. Relationships of irreversible porous body flow and the finite element method are used. It is established that in view of nonuniform temperature distribution within a compact there is radial flow of powder. The more heated layer of the material is more intensely compacted than the less heated layer. Nonuniform temperature distribution affects the magnitude of axial and radial pressures. Modelling of compaction of a stepped article of complex shape makes it possible to establish that nonuniform heating may increase radial powder flow that in turn promotes levelling of the density. The results of modelling may be used in order to optimize warm compaction of powder articles by choosing special billet heating schemes.

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Authors and Affiliations

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

    O. V. Mikhailov, M. B. Shtern & Yu. A. Panfilov

Authors
  1. O. V. Mikhailov
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  2. M. B. Shtern
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  3. Yu. A. Panfilov
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Translated from Poroshkovaya Metallurgiya, Nos. 3–4(448), pp. 7–13, March–April, 2006.

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Mikhailov, O.V., Shtern, M.B. & Panfilov, Y.A. Computer modelling of warm powder compaction in rigid dies: Effect of nonuniform heating. Powder Metall Met Ceram 45, 113–117 (2006). https://doi.org/10.1007/s11106-006-0050-9

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  • DOI: https://doi.org/10.1007/s11106-006-0050-9

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