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Special Features of Structure Formation and Properties of Special High-Alloy Alloys of the Al – Si – Cu System

  • ALUMINUM AND ALUMINUM ALLOYS
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Metal Science and Heat Treatment Aims and scope

The special features of formation of structure in alloys Al – (20 – 50)% Si – (2 – 60)% Cu and the distribution of the alloying elements in them are studied. Metallographic analysis is made using optical and scanning electron microscopy and x-ray diffractometry. The density of the alloys is determined. The Al – Si – Cu compositions with low and steady values of the temperature coefficient of linear expansion (TCLE) α = (9.0 – 4.0) × 10 – 6 K– 1 in the range of 50 – 450°C are chosen. It is shown that the density of these alloys does not exceed 3500 kg/m3. The results of the study may be used for developing low-TCLE alloys for special fields of instrument engineering.

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Notes

  1. The electron microscopic studies were performed using the equipment of the common access center “Structure, Mechanical and Physical Properties of Materials” of the Novosibirsk State Technical University.

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Authors and Affiliations

  1. Siberian State Industrial University, Novokuznetsk, Russia

    V. K. Afanas’ev, M. V. Popova & M. A. Malyukh

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  1. V. K. Afanas’ev
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  2. M. V. Popova
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  3. M. A. Malyukh
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Correspondence to M. V. Popova.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 48 – 53, November, 2022.

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Afanas’ev, V.K., Popova, M.V. & Malyukh, M.A. Special Features of Structure Formation and Properties of Special High-Alloy Alloys of the Al – Si – Cu System. Met Sci Heat Treat 64, 655–661 (2023). https://doi.org/10.1007/s11041-023-00867-5

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  • DOI: https://doi.org/10.1007/s11041-023-00867-5

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