Cu-Al metal matrix composite fabricated by accumulative HPT

Даниленко, В. Н.; Kiekkuzhina, L U; Parkhimovich, Nikolay; Хафизова, Э. Д.; Gunderov, D. V.

doi:10.1016/j.matlet.2021.130240

Cited by 7 publications

(16 citation statements)

References 14 publications

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“…Delamination occurs between the copper and aluminum layers, the cause of which was discussed in [10]. In this case, mixing of aluminum and copper did not occur.…”

Section: Resultsmentioning

confidence: 83%

“…The samples were deformed under constrained conditions with using an anvil with a depression with a diameter of 20 mm and a total depth of 0.4 mm [1]. A detailed description of the deformation conditions is given in [10].…”

Section: Materials and Experimental Methodsmentioning

confidence: 99%

“…Conventional HPT was successfully applied to obtain composites with a metal matrix in various binary systems: Al-Cu [11][12][13][14][15], Cu-Al [10,11,16,17], Al-Mg [18 -20]. Al-Nb [21,22], Zn-Mg [23], Zr-Nb [24].…”

Section: Introductionmentioning

confidence: 99%

“…Accumulative HPT eliminates this drawback and leads to almost homogeneous mixing of the entire sample. In [10], metal-matrix composites of the Cu-Al binary system were successfully synthesized using accumulative HPT in threelayer Cu-Al-Cu stacks. Observations using scanning electron microscopy (SEM) revealed significant mixing of the Cu and Al layers and the formation of a thin lamellar structure throughout the sample volume after accumulative HPT.…”

Section: Introductionmentioning

confidence: 99%

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Effect of annealing on the structure and phase composition of Cu-Al composite produced by conventional and accumulative HPT

et al. 2022

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The paper presents the first results of the investigation of the effect of annealing on the evolution of microstructure and phase composition of a Cu-Al composite obtained by accumulative high pressure torsion (HPT). Cu-Al composites produced under 6 GPa in 10 revolutions at room temperature with conventional and accumulative HPT were annealed at 450°C for 15 min. Electron microscopy and energy dispersive spectrometry analysis showed that annealing enhances the solid-state reaction. In the sample after conventional HPT and post-deformation annealing, grayer contrast layers containing intermetallic compounds were formed at the copper-aluminum interface. The contrast on the microstructure images of the sample after accumulative HPT and post-deformation annealing is more uniform than after conventional HPT and annealing. In the sample, a more intense phase transformation occurred. This led to a noticeable increase in the volume fraction of the intermetallic compounds up to 5 -6 times. X-ray diffraction analysis indicates that in the annealed sample after accumulative HPT, alongside with initial copper, there is also a solid solution of aluminum in copper, which differs from copper with a crystal lattice parameter. Postdeformation annealing led to the formation of different quantity of intermetallic compounds in the studied samples.

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“…Delamination occurs between the copper and aluminum layers, the cause of which was discussed in [10]. In this case, mixing of aluminum and copper did not occur.…”

Section: Resultsmentioning

confidence: 83%

Section: Materials and Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of annealing on the structure and phase composition of Cu-Al composite produced by conventional and accumulative HPT

et al. 2022

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“…Thus far, HPT has been regarded not only as an SPD method in metallurgy, but also as an important scientific tool in many fields of science and engineering (Perez-Prado et al, 2008;Leiva et al, 2010;Nie et al, 2010;Gao et al, 2011;Mine et al, 2011;Popov et al, 2012a;Estrin and Vinogradov, 2013). HPT processing has been applied to many kinds of materials, such as metallic and intermetallic materials, and metal-based, polymer-based, and ceramic-based composites (Towle and Riecker, 1969;Shabashov, 1995;Huang, 2007;Hohenwarter and Pippan, 2011;Tugcu et al, 2012;Edalati et al, 2013;Kawasaki et al, 2014a;Langdon, 2015;Medvedev et al, 2018;Danilenko et al, 2021;Xiong et al, 2021). Compared with traditional thermomechanical processing methods, such as forging, extrusion, and rolling, HPT has the advantage of extensive cumulative strain, which can refine the microstructure to submicrometer or nanometer range.…”

Section: Introductionmentioning

confidence: 99%

The microstructural, textural, and mechanical effects of high-pressure torsion processing on Mg alloys: A review

et al. 2022

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Magnesium (Mg) alloys attract considerable attention in the fields of aerospace, defense technology, and automobile production, owing to the advantages of their low density, their highly specific strength/stiffness, and their good damping and electromagnetic shielding performance. However, low strength and poor ductility limit further application. Severe plastic deformation is considered the most promising means of producing ultrafine-grained Mg alloys and improving their mechanical properties. To this end, high-pressure torsion (HPT) is one of the most effective techniques. This article outlines the microstructure, texture, and mechanical properties of Mg alloys processed using HPT. The effects of deformation parameters, such as processing temperature, turns, applied pressure, and rotation speed, on the grain refinement and secondary phases are discussed. Textural evolution is detailed in light of both intrinsic and extrinsic factors, such as cumulative strain and the composition of the alloy elements. The subsequent enhancement of mechanical properties and mechanisms, and the significant contribution of the HPT process to strength are further reviewed. Given the advantages of HPT for grain refinement and structural modification, researchers have proposed several novel processes to extend the industrial application of these alloys.

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Correlation of structure development and electric characteristics within high pressure torsion processed copper

Kocich,

Kopeček,

Marek

2024

Materialwissenschaft Werkst

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Copper of a high purity features excellent electric conductivity, but generally very low mechanical properties. Nevertheless, optimized deformation/thermomechanical treatment can introduce favorable combinations of both. The presented study characterizes the correlation of microstructure development and electric properties within copper processed by the severe plastic deformation method of high pressure torsion, the primary advantage of which is that it enables to achieve grains with the sizes in the ultra‐fine, or even nano scales. The study investigates structure development during progressive deformation. In other words, samples processed by single and double high pressure torsion revolutions were evaluated from the viewpoints of grain sizes and grain boundaries, and the results were correlated with the experimentally measured electric conductivity. The single high pressure torsion revolution contributed to grain size decrease, while the structure after double revolution exhibited very fine grains, especially at the sample periphery featuring the highest imposed strain. Both the samples also exhibited increases in microhardness (especially after double revolution), and electric conductivity higher than 100 % IACS. The results confirmed that copper conductors featuring enhanced mechanical properties and favorable electric conductivity can be manufactured by severe plastic deformation.

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Cu-Al metal matrix composite fabricated by accumulative HPT

Cited by 7 publications

References 14 publications

Effect of annealing on the structure and phase composition of Cu-Al composite produced by conventional and accumulative HPT

Effect of annealing on the structure and phase composition of Cu-Al composite produced by conventional and accumulative HPT

The microstructural, textural, and mechanical effects of high-pressure torsion processing on Mg alloys: A review

Correlation of structure development and electric characteristics within high pressure torsion processed copper

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