Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Deformation Inhomogeneities of A Hypoeutectic Aluminum-Silicon Alloy Modified by Electron Beam Treatment

Artem Ustinov
ORCID logo ,
Anatoly Klopotov
ORCID logo ,
Yuri Ivanov
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Dmitry Zagulyaev
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Anton D. Teresov
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Elizaveta Petrikova
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Denis Gurianov
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Andrey Chumaevskii
* ORCID logo
Version 1 : Received: 27 January 2023 / Approved: 28 January 2023 / Online: 28 January 2023 (09:47:13 CET)

A peer-reviewed article of this Preprint also exists.

Ustinov, A.; Klopotov, A.; Ivanov, Y.; Zagulyaev, D.; Teresov, A.; Petrikova, E.; Gurianov, D.; Chumaevskii, A. Deformation Inhomogeneities of a Hypoeutectic Aluminum-Silicon Alloy Modified by Electron Beam Treatment. Materials 2023, 16, 2329. Ustinov, A.; Klopotov, A.; Ivanov, Y.; Zagulyaev, D.; Teresov, A.; Petrikova, E.; Gurianov, D.; Chumaevskii, A. Deformation Inhomogeneities of a Hypoeutectic Aluminum-Silicon Alloy Modified by Electron Beam Treatment. Materials 2023, 16, 2329.

Abstract

: The paper presents the results of uniaxial tensile tests of samples of hypoeutectic aluminum-silicon alloy A319. According to the results of which the influence of surface treatment by a pulsed electron beam on the mechanical properties of the material was determined. The peculiarities of localization of deformation in the material, caused by grinding of the surface layer material structure due to rapid crystallization during electron beam treatment were revealed. The surface treatment up to 100 µm depth leads to the formation of a fine dendritic columnar structure of silumin and to an increase in the plasticity of the samples. The influence of surface treatment affects the increase of deformation localization in the region of stable concentrator before failure. The largest increase in ductility and localization of deformation occurs during processing with energy density of 15 J/cm2. In the process of specimen deformation, unstable, metastable, and stable areas of plastic deformation localization are formed and replaced, and the formation of stable areas of localized plastic deformation, in which the specimen fails at the end of the test, can be detected at the initial stages of testing. In specimens, during testing in the zone of localized plastic deformation, bands are formed that pass through the entire surface of the specimen at an angle from 35 to 55 degrees to the axis of tension, their evolution leads to the formation of stable zones of localized plastic deformation and to the failure of the specimen.

Keywords

electron beam treatment; aluminum-silicon alloy; deformation inhomogeneities; surface hardening

Subject

Chemistry and Materials Science, Metals, Alloys and Metallurgy

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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