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Cu–Al2O3 Nanofiber Conglomerate for Modifying the Structure and Properties of Aluminum

  • NEW MATERIALS. TECHNOLOGY OF COMPOSITE MATERIALS
  • Published:
Russian Metallurgy (Metally) Aims and scope

Abstract

Aluminum and its alloys are still promising next-generation materials. The application of aluminum-matrix composite materials is the priority for some mechanical engineering industries. Discontinuous Al2O3 nanofibers are most promising and poorly studied as a reinforcing phase for aluminum. There are several technological problems, the solution of which enables one to implement the potential of aluminum by achieving its new characteristics. We propose a technique for an efficient introduction of light nanofibers about 10 nm in diameter using transport powders. Copper powders of different fractions are rubbed with nanofibers to form conglomerates to be introduced into the aluminum melt. The structure of the fabricated specimens is examined, the hardness is measured, and the behavior of the material under impact loads is estimated. Comparative studies of the structure and properties of the reinforced material and the initial material showed greater efficiency of the copper powder with a particle size of 180–200 μm under these conditions. The reinforcement of aluminum with Al2O3 nanofibers creates a modifying effect and enhances its mechanical properties.

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Funding

This work was supported by the Russian Foundation for Basic Research, project no. 20-53-53022 GFEN_a.

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Authors and Affiliations

  1. Bauman Moscow State Technical University, 105005, Moscow, Russia

    Yu. A. Kurganova & Y. Chen

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  1. Yu. A. Kurganova
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  2. Y. Chen
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Correspondence to Yu. A. Kurganova.

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Translated by T. Gapontseva

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Kurganova, Y.A., Chen, Y. Cu–Al2O3 Nanofiber Conglomerate for Modifying the Structure and Properties of Aluminum. Russ. Metall. 2021, 1685–1691 (2021). https://doi.org/10.1134/S0036029521130115

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