Investigation on microstructure, mechanical, and tribological performance of Cu base hybrid composite materials

Şap, Serhat; Uzun, Mahir; Usca, Üsame Ali; Pimenov, Danil Yurievich; Giasin, Khaled; Wojciechowski, Szymon

doi:10.1016/j.jmrt.2021.11.114

Cited by 43 publications

(20 citation statements)

References 44 publications

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“…Figure 13 shows the relative densities of the sintered pure Al7075 and Al7075-CNTs composites for different milling times. The density of sintered parts, especially MMCs produced by PM methods, has been significantly influenced by seven key parameters, namely; production parameters, matrix and reinforcement properties, interfacial bonding, structural integrity, distribution, destruction of reinforcements, sintering ability, and perhaps most significantly packing ability [54]. The sintered specimen consisting of relatively bigger particles cannot show the full density.…”

Section: Effect Of Milling Time On Properties Of Sintered Compositesmentioning

confidence: 99%

Dispersion mechanism-induced variations in microstructural and mechanical behavior of CNT-reinforced aluminum nanocomposites

Doğan

Özgün

Sübütay

et al. 2022

Archiv.Civ.Mech.Eng

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The combination of powder metallurgy and ball milling method has been widely regarded as the most beneficial route for producing multi-walled carbon nanotubes (MWCNTs)-reinforced aluminum matrix composites. In this study, the effects of different milling times (1, 2, 4, and 8 h) on the structural, morphological, and crystallographic properties of MWCNTs-reinforced Al7075 composite powders were characterized by particle size analyzer, Raman spectroscopy, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and X-ray diffraction (XRD). After the morphological and structural characterization of the milled powders, the microstructural and mechanical properties of the hot-pressed composites were evaluated using an optical microscope, SEM, density, and Brinell hardness measurements. Considering milled powder characterization, the MWCNTs were gradually distributed and embedded within the matrix as the milling time increased. Milling for 8 h resulted in a minimum level of particle size (11 µm) with shortened and uniformly dispersed CNTs. Brinell hardness of the composite increased from 91 to 237 HB -a ⁓%160 after 8 h of milling. Such a remarkable increment in hardness could be attributed to several concurrent strengthening effects related to dispersion, solution, grain refinement, and Orowan looping mechanisms. However, relative density results revealed that the composite produced by 2 h milled powders exhibited the highest density (%99.96). The observed differences between hardness and density results were ascribed to powders’ deteriorated packing and sintering behavior due to an increment in the hardness of particles and variation in particle size range and morphology, which resulted from following different milling protocols.

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Section: Effect Of Milling Time On Properties Of Sintered Compositesmentioning

confidence: 99%

Dispersion mechanism-induced variations in microstructural and mechanical behavior of CNT-reinforced aluminum nanocomposites

Doğan

Özgün

Sübütay

et al. 2022

Archiv.Civ.Mech.Eng

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“…Reinforcement particles with a stable structure can thermodynamically improve the mechanical performance of copper matrix composites but have less effect on electrical properties [3]. In recent years, copper matrix composite materials were preferred in many fields, such as engineering materials, thanks to their superior mechanical properties [4]. Copper composites, which are formed by the combination of the excellent elastic modulus of ceramic materials and the high ductility of copper, are used especially in the aerospace and automotive industries [5].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Mechanical and Tribological Aspect of Self-Lubricating Cu-6Gr Composites Reinforced with SiC–WC Hybrid Particles

et al. 2022

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Because of their high thermal conductivity, good corrosion resistance, and great mechanical qualities, copper matrix composites are appealing materials utilized in a variety of industries. This study investigates the mechanical properties of copper–graphite (Cu–Gr) matrix composites reinforced with silicon carbide (SiC) and tungsten carbide (WC) particles by hot pressing using powder metallurgy method. The goal is to investigate the influence of the reinforcement ratio on the mechanical characteristics of copper composite materials generated (density, hardness, flexural strength, and wear resistance). SEM, EDS, and X-RD analysis were used to perform metallographic examinations. The highest relative density with a value of 98.558% was determined in the C3 sample. The findings revealed that when the reinforcement ratio was raised, the hardness rose. The highest hardness value was observed in the C6 sample with an increase of 12.52%. Sample C4 (with the lowest SiC and WC particles ratio) had the highest bending stress (233.18 MPa). Bending stress increased by 35.56% compared to the C1 sample. The lowest specific wear rates were found in the C4 sample, with a decrease of 82.57% compared to the C1 sample. The lowest wear rate (6.853 × 10−7 mm3/Nm) also occurred in the C4 sample. The microstructural analysis showed that the hybrid reinforcement particles exhibited a homogeneous distribution in the copper matrix. X-RD analysis showed that there was no intermediate reaction between the parent matrix and the hybrid reinforcements. A good interfacial bond was observed between the matrix structure and the hybrid reinforcements. The motivation of this research was to utilise the advantages of the unique features of SiC–WC hybrid particles to improve the performance of newly developed Cu-6Gr composites for wear-resistance applications.

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“…Cu is an ideal metallic base material that mostly used in electrode materials for joining operations and exclusive industrial applications such as electrical devices and electrical packaging due to its superior thermal and electrical conductivity features. 1 However, their poor mechanical and tribological properties especially for extreme temperatures limit the extensive usage of this material group. To extend their usage and improve material properties, various researchers have been utilized different production methods consisting of several strengthening mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of AlTiN coated carbide tools during machining of ceramic reinforced Cu-based hybrid composites under cryogenic, pure-minimum quantity lubrication and dry regimes

Şap

Usca

Uzun

et al. 2022

Journal of Composite Materials

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In this study, the machining performance of 10 wt.% B-Ti-SiCp particles reinforced Cu-based hybrid composites were investigated under dry, minimum quantity lubrication (MQL) and cryogenic LN2 assisted environments during milling. In-depth analyses comprising of tool wear development, surface roughness, surface texture, cutting temperature, cutting energy, and chip morphologies were thoroughly performed. According to the experimental results, MQL environment was found to be most influential method to prevent build-up-edge formation. In addition, LN2 assisted cryogenic coolant medium is the most powerful method in all machining characteristics as providing better tribological properties. The paper proposes a novel approach for improved machinability performance of Cu-based hybrid composites with sustainable techniques.

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Investigation on microstructure, mechanical, and tribological performance of Cu base hybrid composite materials

Cited by 43 publications

References 44 publications

Dispersion mechanism-induced variations in microstructural and mechanical behavior of CNT-reinforced aluminum nanocomposites

Dispersion mechanism-induced variations in microstructural and mechanical behavior of CNT-reinforced aluminum nanocomposites

Evaluation of Mechanical and Tribological Aspect of Self-Lubricating Cu-6Gr Composites Reinforced with SiC–WC Hybrid Particles

Performance evaluation of AlTiN coated carbide tools during machining of ceramic reinforced Cu-based hybrid composites under cryogenic, pure-minimum quantity lubrication and dry regimes

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