Production of Highly Reinforced Dispersion-Strengthened Composite Material Based on Aluminum by Internal Oxidation

Chernyshov, E. A.; Романов, А. Д.; Романова, Е. А.

doi:10.1007/s11015-018-0724-9

Cited by 11 publications

(7 citation statements)

References 8 publications

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“…In this case, the greater the porosity of the raw compacts, the lower their size increase, which is in good agreement with theoretical predictions. In reality, based on formula (1), the change in the porosity of the compact as a result of its sintering can be represented in the form of two terms [2][3][4].…”

Section: Results Of Experimental Studiesmentioning

confidence: 99%

“…However, due to the high cost of copper and its inclusion in the list of strategic elements, the problem of minimizing its percentage in compositions with the condition of preserving the most important valuable properties of manufactured products is becoming increasingly important. From this point of view, the creation of new powder compositions of the Cu-Al system having the above-mentioned properties can be considered a very urgent scientific and technical problem [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

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Features of Structural Formation in a Cu–Al Powder System

Yagubov

2021

Metallurgist

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Investigations of the process of liquid-phase sintering of powder compositions of the Cu-Al system were carried out. As a result, the dependence of their final porosity indicators on the corresponding initial factors, comprising sintering temperatures and the number of constituent components, was revealed. Based on the obtained experimental data, the dependences of the microstructure of Cu-Al system compositions having a 25% aluminum content on sintering temperature and aluminum concentration are presented.In the course of the research, the dependence of the aluminum solid phase distribution in the Cu-Al system on the sintering temperature was studied at various concentrations. Experimental data on determining the porosity of the Cu-Al system compacts, the amount of the solid phase component in the liquid, as well as the amount of aluminum in the solid phase after sintering, depending on its initial concentration, are presented.The sintering of Cu-Al system compacts is shown to proceed with the participation of the liquid phase. In this case, changes in the dimensions of the sintered briquettes, on which the stability of the resulting powder blanks depends, turns out to be important. The technique and results of dilatometric studies of changes in compact dimensions depending on the sintering temperature and the initial porosity of the workpieces are presented. Additionally, the dependence of the relative change in the sample length and the medium temperature on the aluminum composition concentration was investigated.

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Section: Results Of Experimental Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Features of Structural Formation in a Cu–Al Powder System

Yagubov

2021

Metallurgist

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“…Quite a significant reserve for enhancing the strength is the further improvement of metal matrix composite properties, the development of their production technologies [11][12][13][14]. Not with standing, the cost of aluminum-based MMC is high and only single parts are currently widely used, as distinct from aviation.…”

Section: Introductionmentioning

confidence: 99%

“…The most typical example of reducing the MMC production cost is the internal oxidation [11]. It enables to reduce the cost of raw materials thereby promoting the wider use of composites.…”

Section: Introductionmentioning

confidence: 99%

Prospects for using aluminum matrix composite materials in the automotive industry

2019

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The scope of the use of aluminum-alloy-based metal-matrix composite materials has been expanding in recent years. However, the high cost of raw materials is a considerable deterrent to the widespread implementation of products made of such composites. Therefore, the ranges of the said materials commercial application are yet inadequate to their technical and operational capabilities. So, methods of making metal-matrix composite materials directly from a liquid melt are currently of interest. This paper presents the theoretical studies and the results of practical experiments for the production of metal-matrix composite material by the internal oxidation method. There are described the results of mechanical tests and the microstructure of specimens confirming theoretical assumptions in the oxidation of aluminum melt array. A comparative analysis is given for the cost of producing an alloy containing 30% of Al2O3 particles obtained by adding the Al2O3 powder and an alloy obtained by the internal oxidation of the aluminum melt. The studied technology provides for the formation of aluminum oxide directly in the aluminum melt, thus enabling to produce a composite material by a single-stage process and ensuring the process efficiency.

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“…A growing interest in aluminum alloys-based MMC is determined by their improved mechanical and service properties combined with the low density. It should be noted that alongside with the size and degree of saturation the adhesion of the matrix with reinforcing particles has a decisive effect on the mechanical and service properties [4][5][6][7]. Furthermore, quite a significant reserve is available for the further improvement of dispersed-filled MMC properties due to developing various manufacturing technologies [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Elaboration of technology for manufacturing aluminum-based metal-matrix composite material strengthened with hollow ceramic microspheres for using thereof in underwater equipment

Романов¹,

Романова²,

Chernyshov³

2019

MATEC Web Conf.

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This paper deals with the study of capabilities for strengthening an aluminum alloy with hollow ceramic microspheres. The results of the microstructural analysis and the investigation of strength properties for the aluminum-silicon alloying system are described herein. For comparison Experiments have been carried out for comparison both with classical microspheres and with chromium- and chromium-carbide-coated microspheres to increase the melt adhesion to a microsphere

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Production of Highly Reinforced Dispersion-Strengthened Composite Material Based on Aluminum by Internal Oxidation

Cited by 11 publications

References 8 publications

Features of Structural Formation in a Cu–Al Powder System

Features of Structural Formation in a Cu–Al Powder System

Prospects for using aluminum matrix composite materials in the automotive industry

Elaboration of technology for manufacturing aluminum-based metal-matrix composite material strengthened with hollow ceramic microspheres for using thereof in underwater equipment

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