Microstructure and mechanical properties of Cu-graphene composites produced by two high pressure torsion procedures

Korznikova, G. F.; Czeppe, T.; Khalikova, G. R.; Гундеров, Д. В.; Korznikova, Elena A.; Lityńska‐Dobrzyńska, Lidia; Szlezynger, Maciej

doi:10.1016/j.matchar.2020.110122

Cited by 33 publications

(9 citation statements)

References 36 publications

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“…Ex situ composites having incorporated particles of small ceramics, carbon‐based or intermetallic compounds with an incoherent interface with respect to the structure of the matrix are normally characterized by enhanced strength and operation temperature of the material. [ 1,3 ] However, in some cases, they concede to in situ composite materials with coherent types of matrix/precipitate interfaces regarding such properties as ductility, long‐term strength, and structure tailoring ability. [ 4 ]…”

Section: Introductionmentioning

confidence: 99%

Structure and Mechanical Behavior of Al–Nb Hybrids Obtained by High‐Pressure‐Torsion‐Induced Diffusion Bonding and Subsequent Annealing

Korznikova

Nazarov

et al. 2020

Adv Eng Mater

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The main approach of mechanical consolidation of dissimilar metals consists in solid state joining of thin discs or powders by means of pressure‐assisted shear deformation. Prior to this research, most strongly dissimilar systems, such as Al–W and Al–Ti, were only bonded by means of mechanical alloying and subsequent powder compaction. Herein, pioneering experimental research on the one‐step synthesis of an Al–Nb composite by means of diffusion bonding through high‐pressure torsion that allows figuring out several unusual results is presented. The maximal microhardness value is revealed to locate in the middle radius area, decreasing at the sample edge. Formation of a small amount of Al3Nb intermetallic phase is detected at room temperature deformation, while its equilibrium formation normally occurs above 600 °C. Post‐deformational annealing at 400 °C results in the overall decrease of the microhardness value along with its growth on the sample edge. Annealing at 600 °C does not lead to any degradation of the mechanical characteristics by comparison to those after annealing at 400 °C. The obtained results are discussed and explained in frames of contribution of different factors to the strengthening and softening dynamics of the composite material.

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Section: Introductionmentioning

confidence: 99%

Structure and Mechanical Behavior of Al–Nb Hybrids Obtained by High‐Pressure‐Torsion‐Induced Diffusion Bonding and Subsequent Annealing

Korznikova

Nazarov

et al. 2020

Adv Eng Mater

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“…S2-B, † the energy dispersive X-ray (EDX) analysis verified that there are only two elements in the sample: Cu and small amount of C, estimated to be near 2.6 wt%. 33 Fig. S2-C † demonstrates the Raman spectrum of graphene/Cu.…”

Section: Methodsmentioning

confidence: 99%

A label-free graphene-based impedimetric biosensor for real-time tracing of the cytokine storm in blood serum; suitable for screening COVID-19 patients

et al. 2021

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“…1 Cu alloys or composites have considerable potential to improve the mechanical properties and hardness. 2,3 Methods for their preparation mainly include powder metallurgy 4,5 , friction stir processing 6 , and electrodeposition 7,8 . The main drawback of powder metallurgy is the non-uniform distribution of the second phase, such as ceramic particles.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Preparation and Properties of Al<sub>2</sub>O<sub>3</sub> Nanoparticles Reinforced Cu-based Composites

Xiang

et al. 2023

Electrochemistry

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Metal Cu has excellent electrical and thermal conductivity, but poor mechanical properties. Incorporating ceramic particles into the Cu matrix to prepare Cu-based composites is one of the most effective methods to improve the mechanical properties. This paper reports a simple and efficient one-step method for the electrochemical preparation of nano-Al2O3 reinforced Cu-based composite; the electrodeposition process and properties of the prepared materials were also studied. Scanning electron microscopy and energy dispersive spectroscopy measurements showed that the Al2O3 nanoparticles were uniformly dispersed in the Cu matrix of the electrodeposited Cu-Al2O3 composites. Incorporating Al2O3 nanoparticles affected the grain size and microstructure of the composites, improving the mechanical properties of the Cu matrix. Increasing the Al2O3 concentration in the electrolyte resulted in the grain size of the composites decreasing to a range of 40.8-98.5 nm. Meanwhile, the preferred orientation of the present composites changed from (111) to (220) crystal plane. The Cu-Al2O3 composite had a tensile strength of 509 MPa, a hardness of 220 Hv, and an elongation to failure of 23.88%, indicating that the material had a high tensile strength while maintaining excellent ductility. Compared with the original monolithic Cu, the performance of the Cu-Al2O3 composite was nearly doubled.

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Microstructure and mechanical properties of Cu-graphene composites produced by two high pressure torsion procedures

Cited by 33 publications

References 36 publications

Structure and Mechanical Behavior of Al–Nb Hybrids Obtained by High‐Pressure‐Torsion‐Induced Diffusion Bonding and Subsequent Annealing

Structure and Mechanical Behavior of Al–Nb Hybrids Obtained by High‐Pressure‐Torsion‐Induced Diffusion Bonding and Subsequent Annealing

A label-free graphene-based impedimetric biosensor for real-time tracing of the cytokine storm in blood serum; suitable for screening COVID-19 patients

Electrochemical Preparation and Properties of Al<sub>2</sub>O<sub>3</sub> Nanoparticles Reinforced Cu-based Composites

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