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Sinterability of powder metallurgy tool steels produced with the application of heat-time treatment of the melt

  • Theory and Technology of Sintering Processes, Heat Treatment, and Chemical Heat Treatment
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Powder Metallurgy and Metal Ceramics Aims and scope

Abstract

Powder metallurgy tool steels prepared from the powders of gas-atomized melts subjected to heat-time treatment were studied. Material containing above 1.2% carbon, in addition to tungsten and molybdenum, exhibited a porosity decrease of 6–12% after vacuum sintering at a temperature 70°C lower than that of solid-phase sintering. The increased sinterability of the alloys was related to the presence of a high, close to eutectic, carbon concentration at the surface of fine powder particles (principally 50–100 μm), and its explained by the formation of liquid phase during the process of leveling the element concentration gradients.

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Authors
  1. L. A. Poznyak
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  2. Y. V. Sorokin
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  3. N. P. Korzhova
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  4. O. V. Datskevich
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Additional information

Materials Science Institute, Ukrainian Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 9–10(397), pp. 13–18, September–October, 1997.

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Poznyak, L.A., Sorokin, Y.V., Korzhova, N.P. et al. Sinterability of powder metallurgy tool steels produced with the application of heat-time treatment of the melt. Powder Metall Met Ceram 36, 466–469 (1997). https://doi.org/10.1007/BF02680493

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  • DOI: https://doi.org/10.1007/BF02680493

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