Microstructure and Corrosion Resistance of AA4047/AA7075 Transition Zone Formed Using Electron Beam Wire-Feed Additive Manufacturing

Филиппов, А. В.; Utyaganova, V. R.; Shamarin, N. N.; Vorontsov, A. V.; Савченко, Н. Л.; Gurianov, D. A.; Чумаевский, А. В.; Рубцов, В. Е.; Колубаев, Е. А.; Tarasov, S. Yu.

doi:10.3390/ma14226931

Cited by 8 publications

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References 41 publications

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“…In the presented optical images of the microstructure of the hypoeutectic aluminumsilicon alloy AlSi5 obtained using the EBAM method, aluminum-based α-solid solution dendrites, and fine-grained eutectics between the dendrites are observed (Figure 2). Such a structure is typical for aluminum-silicon alloys obtained by casting or electron beam printing [50]. The structure of the obtained material differs significantly in the upper (Figure 2a), middle (Figure 2b), and lower (Figure 2c) parts of the sample.…”

Section: Resultsmentioning

confidence: 71%

Al–Al3Ni In Situ Composite Formation by Wire-Feed Electron-Beam Additive Manufacturing

et al. 2023

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The regularities of microstructure formation in samples of multiphase composites obtained by additive electron beam manufacturing on the basis of aluminum alloy ER4043 and nickel superalloy Udimet-500 have been studied. The results of the structure study show that a multicomponent structure is formed in the samples with the presence of Cr23C6 carbides, solid solutions based on aluminum -Al or silicon -Si, eutectics along the boundaries of dendrites, intermetallic phases Al3Ni, AlNi3, Al75Co22Ni3, and Al5Co, as well as carbides of complex composition AlCCr, Al8SiC7, of a different morphology. The formation of a number of intermetallic phases present in local areas of the samples was also distinguished. A large amount of solid phases leads to the formation of a material with high hardness and low ductility. The fracture of composite specimens under tension and compression is brittle, without revealing the stage of plastic flow. Tensile strength values are significantly reduced from the initial 142–164 MPa to 55–123 MPa. In compression, the tensile strength values increase to 490–570 MPa and 905–1200 MPa with the introduction of 5% and 10% nickel superalloy, respectively. An increase in the hardness and compressive strength of the surface layers results in an increase in the wear resistance of the specimens and a decrease in the coefficient of friction.

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Section: Resultsmentioning

confidence: 71%

Al–Al3Ni In Situ Composite Formation by Wire-Feed Electron-Beam Additive Manufacturing

et al. 2023

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“…For the actual solidification, the surface deviates significantly from the liquidus isotherm due to the effects of supercooling. For example, one paper shows the effects of supercooling on grain growth directions [35], where there are noticeable discrepancies between the actual solidification surface and the liquidus isotherm in systems in which there is significant supercooling. It is possible to observe a noticeable deviation of the actual curing surface from the liquidus isotherm, which further increases with the printing speed.…”

Section: Macrostructure and Microhardness Of Large-sized C11000 Blocksmentioning

confidence: 99%

Features of Microstructure and Texture Formation of Large-Sized Blocks of C11000 Copper Produced by Electron Beam Wire-Feed Additive Technology

et al. 2022

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The paper investigated the possibility of obtaining large-sized blocks of C11000 copper on stainless steel substrates via electron beam wire-feed additive technology. The features of the microstructure and grain texture formation and their influence on the mechanical properties and anisotropy were revealed. A strategy of printing large-sized C11000 copper was determined, which consists of perimeter formation followed by the filling of the internal layer volume. This allows us to avoid the formation of defects in the form of drops, underflows and macrogeometry disturbances. It was found that the deposition of the first layers of C11000 copper on a steel substrate results in rapid heat dissipation and the diffusion of steel components (Fe, Cr and Ni) into the C11000 layers, which promotes the formation of equiaxed grains of size 8.94 ± 0.04 μm. As the blocks grow, directional grain growth occurs close to the <101> orientation, whose size reaches 1086.45 ± 57.13 μm. It is shown that the additive growing of large-sized C11000 copper leads to the anisotropy of mechanical properties due to non-uniform grain structure. The tensile strength in the opposite growing direction near the substrate is 394 ± 10 MPa and decreases to 249 ± 10 MPa as the C11000 blocks grows. In the growing direction, the tensile strength is 145 ± 10 MPa.

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Effect of Mg admixing on strength and corrosion of electron beam additive manufactured AlSi12 on the AA5056 substrate

Utyaganova

Vorontsov

Gurianov

et al. 2023

Materials Characterization

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Microstructure and Corrosion Resistance of AA4047/AA7075 Transition Zone Formed Using Electron Beam Wire-Feed Additive Manufacturing

Cited by 8 publications

References 41 publications

Al–Al3Ni In Situ Composite Formation by Wire-Feed Electron-Beam Additive Manufacturing

Al–Al3Ni In Situ Composite Formation by Wire-Feed Electron-Beam Additive Manufacturing

Features of Microstructure and Texture Formation of Large-Sized Blocks of C11000 Copper Produced by Electron Beam Wire-Feed Additive Technology

Effect of Mg admixing on strength and corrosion of electron beam additive manufactured AlSi12 on the AA5056 substrate

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