Obtaining Composite Materials of the System Al - Metallic Glass Fe66Cr10Nb5B19, Possessing Anisotropy of Mechanical Properties
V. I. Kvashnin1,2, A. N. Novoselov1, M. A. Legan1,2, M. A. Esikov1,2, A. I. Gavrilov3, A. V. Ukhina3
1Lavrentyev Insitute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
3Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: composite materials, aluminum, intermetallic compounds, metallic glass, spark sintering, mechanical activation
Abstract
The paper describes the production of aluminum matrix composite materials containing metallic glass particles of the composition Fe66Cr10Nb5B19 by successively applying mechanical activation of the initial powders in a planetary mill and spark sintering. During sintering at 540 °C, the metallic glass particles are completely or partially converted into the intermetallic compound Fe4Al13. Composite materials sintered from a mixture of Al + 20 (vol.) % Fe66Cr10Nb5B19 are characterized by anisotropy of mechanical properties: the yield strength in compression, microhardness and deformation at failure in the pressing direction during sintering are 550 MPa, 200 HV and 14.2%, respectively, while in the direction perpendicular to the pressing direction, these characteristics are 740 MPa, 250 HV and 2.2%
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