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The effect of temperature and equal-channel angular-pressing routes on the form of powders and structure in pressings

  • Theory and Processes of Formation and Sintering of Powder Materials
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Russian Journal of Non-Ferrous Metals Aims and scope Submit manuscript

Abstract

The results of investigations on varying the shape and fragmentation of aluminum powders of the PA-2 grade of 300–500 µm in size, briquette made of which was subjected to equichannel angular pressing (ECAP) at room temperature and 350°C. ECAP was performed by different routes up to five passages. The sample structure was studied by metallographic method in the longitudinal and transverse sections. It is established that ECAP at room temperature, including fivefold pressing (ɛ > 5.5), no deformation fragmentation occur. In the case of hot ECAP, density of samples after the fourth passage was close to the theoretical one. The structure of the material obtained by routes B C and A consists of fine grains, while after the ECAP by route C it has the duplex nature and includes both fine and coarse grains.

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Authors and Affiliations

  1. Institute of Strength Physics and Materials Science, Siberian Division, Russian Academy of Sciences, Akademicheskii pr. 2/3, Tomsk, 634021, Russia

    N. M. Rusin

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  1. N. M. Rusin
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Correspondence to N. M. Rusin.

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Original Russian Text © N.M. Rusin, 2009, published in Izvestiya VUZ. Poroshkovaya Metallurgiya i Funktsional’nye Pokrytiya, 2009, No. 2, pp. 27–32.

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Rusin, N.M. The effect of temperature and equal-channel angular-pressing routes on the form of powders and structure in pressings. Russ. J. Non-ferrous Metals 50, 529–533 (2009). https://doi.org/10.3103/S1067821209050186

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  • DOI: https://doi.org/10.3103/S1067821209050186

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