Modeling and optimization of uniaxial magnetic pulse compaction of nanopowders

Olevsky, Eugene A.; Bokov, Arseniy; Boltachev, G. Sh.; Volkov, N. B.; Zayats, S. V.; Ilyina, A. M.; Nozdrin, A.; Paranin, S. N.

doi:10.1007/s00707-013-0939-6

Cited by 21 publications

(8 citation statements)

References 22 publications

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“…MPC [16][17][18] and SPS [19] were selected as methods of compacting. The amplitude of the pulse wave of compression of MPC was 1.5 GPa with a pulse duration of 300 ms. Before compaction, the samples were degassed at heating to a temperature of 500 • C under vacuum (5-10 Pa) for 240 min and then pressed between steel strips coated with a layer of graphite at a temperature of 500 • C. To prevent cracking, the samples were cooled to 400 • C and then to room temperature for 120 min.…”

Section: Methodsmentioning

confidence: 99%

Effect of the method for producing $$\hbox {Cu}$$ Cu – $$\hbox {Cr}_{3}\hbox {C}_{2}$$ Cr 3 C 2 bulk composites on the structure and properties

et al. 2017

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Copper-chromium carbide composites containing a carbide phase of 20-30 vol% were obtained with the use of solid-and liquid-phase mechanosyntheses, followed by magnetic pulse compaction (MPC) and spark plasma sintering. The morphology, structural-phase composition, density, hardness and electrical conductivity of the composites were investigated. The structure of composites obtained by MPC represents regions of copper matrix hardened by superfine carbide precipitates surrounded by a layer of chromium carbide. In the composites obtained by spark plasma sintering, the copper matrix hardened by superfine carbide precipitates was divided into areas surrounded by a copper-chromium layer. A composite obtained by the MPC of the powders synthesized using solid-phase mechanosynthesis (MS) (copper, chromium and graphite) had the highest values of Vickers microhardness (4.6 GPa) and Rockwell hardness (HRA 69). The best value of electrical conductivity (36% IACS) was achieved using liquid-phase MS (copper, chromium and xylene) and spark plasma sintering. Liquid-phase MS is the only way to synthesize the powder with a small amount of the carbide phase and without contamination.

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Section: Methodsmentioning

confidence: 99%

Effect of the method for producing $$\hbox {Cu}$$ Cu – $$\hbox {Cr}_{3}\hbox {C}_{2}$$ Cr 3 C 2 bulk composites on the structure and properties

et al. 2017

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“…Therefore, a process plan suitable for the powder moulding of self-prepared conductive Graphene/PEKK composite materials is necessary to select, and the corresponding moulding process parameters need to be determined. In addition to theory and experiment, finite-element (FE) simulation analysis is an effective method for the preliminary exploration of new process schemes for self-prepared conductive Graphene/PEKK composite powders [ 40 , 41 , 42 ]. Some studies have been performed on the electromagnetic pulse compaction FE analysis method of metal and metal-composite ceramic powder [ 36 , 37 , 38 ], but almost no research has been conducted on electromagnetic pulse compaction of self-prepared conductive Graphene/PEKK composite powder.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Electromagnetic Pulse Compaction on Conducting Graphene/PEKK Composite Powder

et al. 2021

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Polymer-composite materials have the characteristics of light weight, high load, corrosion resistance, heat resistance, and high oil resistance. In particular, graphene composite has better electrical conductivity and mechanical performance. However, the raw materials of graphene composite are processed into semi-finished products, directly affecting their performance and service life. The electromagnetic pulse compaction was initially studied to get the product Graphene/PEKK composite powder. Simultaneously, spark plasma sintering was used to get the bars to determine the electrical conductivity of Graphene/PEKK composite. On the basis of this result, conducting Graphene/PEKK composite powder can be processed by electromagnetic pulse compaction. Finite element numerical analysis was used to obtain process parameters during the electromagnetic pulse compaction. The results show that discharge voltage and discharge capacitance influence on the magnetic force, which is a main moulding factor affecting stress, strain and density distribution on the specimen during electromagnetic pulse compaction in a few microseconds.

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“…Различные аспекты процесса ударного прессования, связанные с физикохимическими превращениями при ударе, происходящем при разогреве пористых сред, рассмотрены в работах [4,12,31]. Динамическое прессование используется при равноканальном угловом прессовании (РКУП) [26], используются магнитно-импульсные методы прессования порошков [11,[32][33][34][35][36]. Следует также упомянуть о процессе самораспространяющегося высокотемпературного синтеза (СВС).…”

Section: Introductionunclassified

Dynamic Powder Compaction Processes

Polyakov¹

2018

DREAM

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Mathematical models of dynamic compaction and extrusion of incompact metallic m aterials are considered. According to the model of dynamic compaction, irreversible material volume changes occurring under the shock action are considered on the basis of the general equations of mass, momentum and energy conservation, which are written for the d iscontinuity surface. A mathematical model of impact extrusion of incompact wire stock through a conical die is proposed. It is based on the superposition of the solutions of two problems, namely, compaction of powder material in a cylindrical press mold and impact extrusion of an incompressible material. The model allows one to determine the minimum tool velocity required to perform extrusion.

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Modeling and optimization of uniaxial magnetic pulse compaction of nanopowders

Cited by 21 publications

References 22 publications

Effect of the method for producing $$\hbox {Cu}$$ Cu – $$\hbox {Cr}_{3}\hbox {C}_{2}$$ Cr 3 C 2 bulk composites on the structure and properties

Effect of the method for producing $$\hbox {Cu}$$ Cu – $$\hbox {Cr}_{3}\hbox {C}_{2}$$ Cr 3 C 2 bulk composites on the structure and properties

Investigation of Electromagnetic Pulse Compaction on Conducting Graphene/PEKK Composite Powder

Dynamic Powder Compaction Processes

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