Changes in surface structure and mechanical characteristics of Al–5 wt%Si alloy after irradiation by electron beam

Ivanov, Yu. F.; Zagulyaev, D. V.; Glezer, A. M.; Gromov, V. Е.; Abaturova, A. A.; Leonov, Andrey; Семин, А. П.; Сундеев, Р.В.

doi:10.1016/j.matlet.2020.128105

Cited by 18 publications

(7 citation statements)

References 11 publications

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“…In works [1,12] it is shown that treatment of silumin by pulsed electron beam is accompanied by formation in a near-surface layer of submicro-and nanocrystalline columnar structure as a result of superfast heating and cooling. The formation of such micro-and nanoscale multiphase structure and the grinding of large silicon wafers to the nanoscale state are the main reasons for the multiple increase of fatigue life [13] and strength properties [2] of electron beam treated silumin.…”

Section: Of 11mentioning

confidence: 99%

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

Ustinov¹,

Klopotov²,

Ivanov³

et al. 2023

Preprint

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: 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.

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Section: Of 11mentioning

confidence: 99%

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

Ustinov¹,

Klopotov²,

Ivanov³

et al. 2023

Preprint

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show abstract

“…Elimination of surface layer defects, refinement of grain structure, formation of optimal structural phase composition from the point of view of plastic deformation and fracture localization peculiarities can contribute to change the plastic deformation and fracture characteristics. High-energy pulsed electron beam is one of the promising tools for modifying the surface layer of metals and alloys [ 1 ]. As a result of electron beam treatment, better technological properties are provided in comparison with traditional methods of surface treatment, such as mechanical, thermal, or thermo-mechanical treatment [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2023

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This paper presents the results of uniaxial tensile tests on specimens of the hypoeutectic aluminum-silicon alloy A319. According to the results, the influence of surface treatment by pulsed electron beam on the mechanical properties of the material was determined. The peculiarities of deformation localization 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 the depth of 100 µm 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 the surface treatment affects the increase in the deformation localization in the region of the stable concentrator before failure. The greatest increase in ductility and localization of deformation occurs during treatment with an 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 the test in the zone of localized plastic deformation, bands are formed which pass through the entire surface of the specimen at an angle of 35 to 55 degrees to the tensile axis, and their development leads to the formation of stable zones of localized plastic deformation and to the failure of the specimen.

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“…During the HCPEB treatment process, the surface can quickly melt and solidify in a short time (the cooling rate is as high as 10 7 -10 9 K/s). Simultaneously, physical phenomena such as stress and shock waves are generated in the process [18][19][20][21]. During the modification process, the surface layer forms metastable phase structures such as nano-crystals, dislocations, and twins, which conventional surface treatment techniques fail to achieve [22].…”

Section: Introductionmentioning

confidence: 99%

Effect of CeO2 on Corrosion Resistance of High-Current Pulsed Electron Beam Treated Pressureless Sintering Al-20SiC Composites

Sun

Gao

et al. 2021

Coatings

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In this paper, the effect of rare earth Ce on the corrosion resistance of Al-20SiC composites treated with high-current pulsed electron beams is investigated, and the corresponding corrosion mechanism is proposed. The scanning electron microscope (SEM) results show that cracks arise on the surface of Al-20SiC composites prepared by pressureless sintering. After electron beam treatment, the pores on the surface are reduced because of the filling of Al liquid. After adding CeO2 to Al-20SiC composites, the wettability between Al and SiC phases is improved, thus realizing metallurgical bonding of the two phases, and microcracks generated after HCPEB treatment are significantly eliminated. Glancing X-ray diffraction (GIXRD) results show that after electron beam treatment, aluminum grains tend to grow more favorably with the stable and dense crystal plane of Al(111), thus improving corrosion resistance. The electrochemical test results show that the corrosion current density decreases by one order of magnitude with increase in the number of pulses because of rare earth Ce compared to the initial Al-20SiC composite specimens, indicating that the corrosion resistance of the Al-20SiC-0.3CeO2 composite is improved. This is because rare earth not only eliminates microcracks, but also changes the type of corrosion from localized to uniform, thus improving corrosion resistance. The Al-based composite material modified by electron beam and rare earth has many potential applications and development prospects.

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Changes in surface structure and mechanical characteristics of Al–5 wt%Si alloy after irradiation by electron beam

Cited by 18 publications

References 11 publications

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

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

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

Effect of CeO2 on Corrosion Resistance of High-Current Pulsed Electron Beam Treated Pressureless Sintering Al-20SiC Composites

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