Mechanical alloying of Cu–SiC materials prepared with utilisation of copper waste chips

Prosviryakov, A. S.; Aksenov, A. A.; Самошина, М. Е.; Ковалева, М. Г.; Ivanov, D. O.

doi:10.1179/003258910x12707304454942

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…An increase in SiC content to above 25% leads to a significant decrease in the hardness of the hot-pressed specimens: the values for 30%SiC are lower as compared with the other specimens, but higher than for 35%. This is consistent with earlier microstructural investigations [11]. With an increase in the SiC content to above 25% (48 vol.%) the microstructure becomes more non-uniform than in Fig.…”

Section: Milling Time Minsupporting

confidence: 92%

“…The structure of Cu-(15-35 wt.%)SiC composites produced by mechanical alloying and subsequent hot pressing has been investigated [11]. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…metal chips. Successful production of heavily alloyed Cu-SiC composites using copper chips was described in the previous paper [11] focused on the study of their structure. The aim of this paper is to study the effect of silicon carbide content and mechanical alloying duration on the structure and properties (hardness, electrical conductivity, CTE, and density) of Cu-SiC components.…”

Section: Introductionmentioning

confidence: 99%

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SiC content effect on the properties of Cu–SiC composites produced by mechanical alloying

Prosviryakov

2015

Journal of Alloys and Compounds

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Section: Milling Time Minsupporting

confidence: 92%

“…The structure of Cu-(15-35 wt.%)SiC composites produced by mechanical alloying and subsequent hot pressing has been investigated [11]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

SiC content effect on the properties of Cu–SiC composites produced by mechanical alloying

Prosviryakov

2015

Journal of Alloys and Compounds

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“…Содержание порошка SiC в шихте варьировали. С целью обеспечения равно-мерного распределения частиц SiC в объеме порошка бронзы приготовление шихты материала рабочего слоя также проводили в планетарной центробежной мельнице САНД-1, что минимизировало вероятность сегрегации компонентов [25].…”

Section: методика исследования методика исследованияunclassified

Structure and properties of hot-forged powder steel–bronze bimetal with SiC additives

Dorofeyev,

Bessarabov,

Sviridova

et al. 2024

Izv. VUZ. Poroshk. Met.

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One of the main problems in the production of bimetals is associated with the difference in the physico-mechanical and structural properties of the materials being joined. Both solid-phase and liquid-phase methods are used to obtain bimetals. The main technological task is to create conditions for the formation of a transition zone between the working layer and adhesively bound substrate. We analyzed the known methods for producing compact and powder bimetals (insert molding, diffusion welding in the solid phase, infiltration, hot isostatic pressing, etc.). The bonding strength of bimetal layers is evaluated according to the results of mechanical shear or pull tests; however, such an assessment does not enable to determine if the product can be operated in the mode of frequent thermal cycles. The above method, which involves joint hot repressing of previously separately cold-pressed and sintered blanks of the working layer and substrates, is promising in terms of improving the mechanical and tribotechnical properties, reducing the risk of structural degradation of particles of hardening additives, as well as enhancing the quality of the connection of steel–bronze bimetal layers. In this case, the working layer is heated through heat transfer from the side of the substrate warmed up to a higher temperature. We studied the impact of technological conditions for obtaining hot-forged powder steel–bronze bimetal on the structure, features of thermal fatigue failure and tribological properties and presented the research results. For structural analysis, thermal fatigue and tribotechnical tests, the bimetal samples with vertical and horizontal arrangement of layers were obtained. The atomized iron powder PZhRV 3.200.28 was used as a base for fabricating the substrate from PK40 steel. Graphite powder GK-3 (GOST 4404-78) was used as a carbonaceous additive. The working layer was fabricated from BrO10 bronze powder obtained by atomizing. To improve the tribotechnical characteristics of the working layer, bronze powder was mixed with superfine grinding micropowder F1000 of black silicon carbide 53S. The quality of bonding of bimetal layers was assessed based on the thermal shock test results. Tribotechnical tests were carried out in the dry friction mode according to the “shaft–block” scheme. We proposed the technique for producing hot-forged powder bimetal “PK40 steel–BrO10 bronze”, which includes the following independent procedures: cold pressing of the substrate and working layer blanks, their sintering in a reducing environment, pre-deformation heating of the substrate and working layer at temperatures that ensure their satisfactory formability, assembly of heated substrate and working layer blanks in the mold and subsequent joint hot repressing. The resulting bimetal is characterized by increased values of thermal fatigue and wear resistance in comparison with the control samples manufactured using the traditional technology of hot repressing of the cold-pressed bimetallic blank.

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Low-Cost Mechanically Alloyed Copper-Based Composite Reinforced with Silicate Glass Particles for Thermal Applications

Prosviryakov

Базлов

Поздняков

et al. 2018

JOM

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Mechanical alloying of Cu–SiC materials prepared with utilisation of copper waste chips

Abstract: The aim of this work was to study the structure and particle size of copper based composite materials reinforced with a high content (15–35 wt-%) of silicon carbide and prepared by mechanical alloying in the high energy planetary millyesBelgorod State Universit

Cited by 7 publications

References 8 publications

SiC content effect on the properties of Cu–SiC composites produced by mechanical alloying

SiC content effect on the properties of Cu–SiC composites produced by mechanical alloying

Structure and properties of hot-forged powder steel–bronze bimetal with SiC additives

Low-Cost Mechanically Alloyed Copper-Based Composite Reinforced with Silicate Glass Particles for Thermal Applications

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