The features of the structural state and phase composition of the surface layer of aluminum alloy Al-Mg-Cu-Zn-Zr irradiated by the high current electron beam

Bryukhovetsky, V.V.; Клепиков, В.Ф.; Lytvynenko, V.V.; Myla, D.E.; Poyda, V. P.; Poyda, A. V.; Uvarov, V.T.; Lonin, Yu.F.; Ponomarev, А.G.

doi:10.1016/j.nimb.2021.02.011

Cited by 20 publications

(13 citation statements)

References 17 publications

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“…Intensive specimen heating generated by a pulsed electron beam melted partially its surface layer. The solidification of the melted layer in a wide range of temperatures and at high pressure caused directed crystallization of the melt under nonequilibrium conditions and resulted in nanocrystalline and amorphous structures [1][2][3][4][5]. At spatial beam intensities exceeding 10 7 J/cm 2 , the pressure inside the target can achieve several megabars.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it is likely that some of the large particles of the hardening phases did not completely melt and dissolve. Also, during irradiation, the nucleation of aluminum and magnesium oxide particles is possible [2]. They will also affect the hardening of the modified layer.…”

Section: Discussionmentioning

confidence: 99%

“…The particles of -and S-phases present in the heat treatment process of cast semi-finished D16AT aluminum alloy affect mainly the dispersion hardening. The 06025-5 modified layer can affect the dispersion hardening performed by oxide particles arising during irradiation [2].…”

Section: Strengthening Mechanismsmentioning

confidence: 99%

“…The energy flux density technique is widely used in the surface treatment of structural materials. The effect of intense pulsed electron beams on the material serves as an example of such a technique [1][2][3][4][5]. The implement of high current relativistic electron beams can improve the surface layer properties and achieve better values than when using conventional treatment techniques.…”

Section: Introductionmentioning

confidence: 99%

“…The molten layer thickness depends on both the particle energy and irradiated specimen density. Microsecond intense pulsed electron beams with a high-current density of up to 10 9 W/cm 2 and particles with energies exceeding 0.3 MeV are able to heat and melt fairly evenly the upper surface layer of the aluminum alloy to a depth of about 100 microns [2,3]. Due to this treatment method, it is possible to localize the modification of the upper surface layer of items.…”

Section: Introductionmentioning

confidence: 99%

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Strengthening Mechanisms in the Surface Layer of Duralumin Modified by a High Current Pulsed Relativistic Electron Beam

Bryukhovetsky¹,

Lytvynenko²,

Myla³

et al. 2021

J. Nano- Electron. Phys.

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The mechanisms of strengthening of the surface layer of D16AT aluminum alloy irradiated with a high-current relativistic electron beam were studied. The alloy was irradiated with an electron beam with a particle energy of 0.35 MeV, a beam current of 2.0 kA, and a pulse duration of 5 μs. This article shows that the processing of D16AT aluminum alloy by a high-current relativistic electron beam leads to melting of irradiated surface and the formation of a surface layer with a modified structural-phase state. The thickness of this layer is approximately 100 m. A solid solution based on aluminum is the main constituent of this layer. At the same time, intermetallic phases that were present in the initial state of the alloy cannot be detected by means of X-ray diffractometry. It was established that processing of the surface of D16AT alloy with a pulsed electron beam leads to grain refining. In the initial state of the alloy, the average grain size is 11 m. In the modified layer, the average grain size is approximately 0.8 m. The microhardness of the irradiated layer increases by almost 50 %. The contribution of different strengthening mechanisms to the change of strength characteristics of the modified surface layer was analyzed. It was shown that the dispersion mechanism makes the main contribution to the strengthening of the alloy in the initial state. While the dislocation mechanism of strengthening plays a key role in increasing the microhardness of the irradiated layer. The importance of these observations for thermomechanical processing of aluminum alloys in order to further improve their strength characteristics was discussed.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Strengthening Mechanismsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Strengthening Mechanisms in the Surface Layer of Duralumin Modified by a High Current Pulsed Relativistic Electron Beam

Bryukhovetsky¹,

Lytvynenko²,

Myla³

et al. 2021

J. Nano- Electron. Phys.

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Powder‐Based Additive Manufacturing: A Critical Review of Materials, Methods, Opportunities, and Challenges

Shanthar,

Chen,

Abeykoon

2023

Adv Eng Mater

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As a 0‐dimensional moulding material, powder particles can realise the construction of most engineering parts and can further improve the precision moulding and high‐performance manufacturing capabilities of additive manufacturing (AM). Therefore, the powder‐based additive manufacturing methods provide an outstanding practical value and development for modern manufacturing world. However, powder materials that are utilised in additive manufacturing continue to face challenges such as a lack of accessible categories, temperature restrictions, and poor performance of moulded components. Therefore, researching for new additive manufacturing materials and procedures has become one of the important and influential ways to accelerate the progress of additive manufacturing technology and also to expand its application fields. For this purpose, it is invaluable to understand and update on the current state‐of‐the‐art of powder‐based additive manufacturing technologies. Hence, this work first reviews the research background of powder‐based 3D printing in details while systematically expounding on the technologies and equipment, material types, influencing factors, existing problems and development trends of powder‐based 3D printing. In addition, the basic principles of powder‐based 3D printing were also revealed, and the formation and optimization of metal, polymer, and ceramic powders in powder‐based 3D printing equipment were explored. Throughout the last decade, powder‐based AM has gradually emerged in the fields of biomedical and aerospace, such as the construction of tissue scaffolds and the construction of aero‐engine parts, respectively. However, powder materials may have insufficient comprehensive performance due some limitations, as the control of mechanical characteristics and dimensional accuracy of powder moulded parts are still challenging during manufacturing processes. Therefore, exploring the mechanism/s of additive manufacturing of powder‐based materials, improving the mechanical properties of powder‐based AM products, and the possible directions for improving the usability of powder materials are the main focus of this paper.This article is protected by copyright. All rights reserved.

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Study on the process optimization and wear resistance of electron beam cladding AlCoCrFeNi coating on 253MA austenitic stainless steel surface

Zhao,

Zhang,

Zhao

et al. 2023

Materials Characterization

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The features of the structural state and phase composition of the surface layer of aluminum alloy Al-Mg-Cu-Zn-Zr irradiated by the high current electron beam

Cited by 20 publications

References 17 publications

Strengthening Mechanisms in the Surface Layer of Duralumin Modified by a High Current Pulsed Relativistic Electron Beam

Strengthening Mechanisms in the Surface Layer of Duralumin Modified by a High Current Pulsed Relativistic Electron Beam

Powder‐Based Additive Manufacturing: A Critical Review of Materials, Methods, Opportunities, and Challenges

Study on the process optimization and wear resistance of electron beam cladding AlCoCrFeNi coating on 253MA austenitic stainless steel surface

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