Structural-phase state and properties of hypereutectic silumin treated with a pulsed electron beam
Автор: Ivanov Yu. F., Eresko S. P., Klopotov A. A., Rygina M. E., Petrikova E. A., Teresov A. D.
Журнал: Siberian Aerospace Journal @vestnik-sibsau-en
Рубрика: Technological processes and material science
Статья в выпуске: 2 vol.22, 2021 года.
Бесплатный доступ
Hypereutectic silumin composition are promising modern materials of wide application (mechanical engineering, aviation, instrumentation, medicine, etc.). Disadvantages of hypereutectic silumin, significantly limiting their scope of application, are pores and cavities, large (about 100 µm) inclusions of lamellar and needle-shaped second phases. As a result of the studies carried out in this work, the possibility of forming structural-phase states in the surface layer of silumin, the size and morphology of which can purposefully change in the range from tens of micrometers to tens of nanometers, is demonstrated. The irradiation modes that allow more than 5 times to increase the microhardness (15 J/cm2, 150 µs, 0.3 s–1, 5 imp.) and more than 3 times to increase the wear resistance (50 J/cm2, 150 µs, 0.3 s–1, 5 imp.) of silumin were revealed.
Hypereutectic silumin, pulsed electron beam, structure, wear resistance, hardness.
Короткий адрес: https://sciup.org/148321811
IDR: 148321811 | DOI: 10.31772/2587-6066-2021-22-2-371-382
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