Microstructure and Hardness Characteristics of Al2O3-B4C Particle-Reinforced Cu Matrix Composites

Öksüz, Keri̇m Emre; Şahin, Yusuf

doi:10.12693/aphyspola.129.650

Cited by 20 publications

(5 citation statements)

References 17 publications

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“…The composites made from particulate metal matrix comprise isotropic properties. The mechanical properties of the metal matrix composite depend on some important factors that comprise the size and weight fraction of the particulates and the method of developing the composite [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Mechanical and Wear Properties of Al 5059/B4C/Al2O3 Hybrid Metal Matrix Composites

Pranavi¹,

Reddy²,

Venukumar³

et al. 2022

J. Compos. Sci.

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There is a developing interest in efficient materials in automobile and aerospace fields that involves the improvement of metal matrix composites (MMCs) with great properties which incorporate higher strength, hardness and stiffness, better wear and destructive resistance along with better thermal properties. This work deals with the evaluation of the mechanical and wear properties of the newly developed hybrid MMC of Al 5059/B4C/Al2O3 produced by stir casting method. The main aim of the work was to evaluate the mechanical properties of various MMCs fabricated with various weight proportions of ceramic particles (B4C and Al2O3). An increase in the tensile strength and the surface hardness was observed with the increase in the ceramic particles but there was a decrease in the percentage of elongation of the specimen. An increase in the ceramic content in the composite samples made the composite sample brittle (composite) from ductile (base metal).

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Section: Introductionmentioning

confidence: 99%

Evaluation of Mechanical and Wear Properties of Al 5059/B4C/Al2O3 Hybrid Metal Matrix Composites

Pranavi¹,

Reddy²,

Venukumar³

et al. 2022

J. Compos. Sci.

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“…The Al 2 O 3 particles were found to be distributed uniformly in the Al6061 matrix. They had high surface energy levels because of their small sizes [37,38]. From combined EDS mapping figure 5(f), it can be seen that aluminum covers almost the entire surface and the surface in combination with oxygen [39].…”

Section: Resultsmentioning

confidence: 99%

Microstructural observation and mechanical properties behavior of Al₂O₃/Al6061 nanocomposite fabricated by stir casting process

Awate

2022

Eng. Res. Express

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Aluminum oxide (Al2O3) nanoparticles are capable of improving the material characteristics if reinforced to soft and low strength material. The major limitation in the utilization of Al alloy 6061 in medium to heavy stress applications such as automobile, defense, transportations, and aerospace is low hardness and strength. In order to overcome the deficiency of Al6061, nano-Al2O3 reinforced Al6061 matrix nanocomposite (AMNC) was successfully fabricated on machinated aluminum stir casting furnace. Al2O3 nanoparticles in 2,4,6 and 8wt. % were reinforced in the Al6061 matrix and the effect on mechanical and microstructure behavior was investigated by field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), hardness, and tensile testing methods. Higher magnification FESEM micrographs revealed that reinforcement of nano-Al2O3 leads to considerable grain refinement and uniform distribution with less porosity. The mechanical properties results showed enhancement in tensile strength (by 130%), hardness (by 156%), yield stress (by 360%) with reinforcement of nano-Al2O3 over the base alloy Al6061. It was observed that the nano size of Al2O3 particles, the quantity of reinforcement, and the stir casting process were effective factors on the microstructure and mechanical properties enhancement.

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“…Therefore, Cu-1Al 2 O 3 composites yielded better results than Cu-10Al 2 O 3 composites. Another possible explanation could be that the ceramic nanoparticles have the ability to endure the applied load and can withstand the plastic deformation of the Cu matrix [16,17].…”

Section: Tribological Propertiesmentioning

confidence: 99%

Al2O3 PARTICLE SIZE EFFECT ON REINFORCED CU COMPOSITES PRODUCED BY HIGH ENERGY MILLING

ÖKSÜZ

2023

Adıyaman Üniversitesi Mühendislik Bilimleri Dergisi

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Production of copper (Cu) composites with a reinforced Cu matrix using mechanical alloying with Aluminum oxide (Al2O3) particles of different sizes was achieved using high-energy ball milling procedure. The initial materials consisted of inert gas-atomized spherical electrolytic Cu powders containing 0.5 wt. % commercial Al2O3 powders, with particle sizes ranging from 10 µm to 1 µm. Cu powders with different particle sizes of Al2O3 were high-energy ball milled at 500 rpm for 3 hours to attain a consistent distribution of Al2O3 throughout in the Cu matrix. The powders that were high-energy ball milled were then subjected to cold-pressing at 500 MPa and isothermally sintered for 1.5 hours at 880°C in an Ar atmosphere. The fabricated copper composite materials were characterized using X-ray diffraction analysis (XRD), field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDXS), density and macrohardness tests. The wear properties and mechanism were investigated through tribological pin-on-disc experiments, which revealed that the reinforcing effect was more significant when finely dispersed Al2O3 particles were combined into the Cu matrix compared to coarse Al2O3 particles.

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Microstructure and Hardness Characteristics of Al₂O₃-B₄C Particle-Reinforced Cu Matrix Composites

Cited by 20 publications

References 17 publications

Evaluation of Mechanical and Wear Properties of Al 5059/B4C/Al2O3 Hybrid Metal Matrix Composites

Evaluation of Mechanical and Wear Properties of Al 5059/B4C/Al2O3 Hybrid Metal Matrix Composites

Microstructural observation and mechanical properties behavior of Al₂O₃/Al6061 nanocomposite fabricated by stir casting process

Al2O3 PARTICLE SIZE EFFECT ON REINFORCED CU COMPOSITES PRODUCED BY HIGH ENERGY MILLING

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Microstructure and Hardness Characteristics of Al2O3-B4C Particle-Reinforced Cu Matrix Composites

Cited by 20 publications

References 17 publications

Evaluation of Mechanical and Wear Properties of Al 5059/B4C/Al2O3 Hybrid Metal Matrix Composites

Evaluation of Mechanical and Wear Properties of Al 5059/B4C/Al2O3 Hybrid Metal Matrix Composites

Microstructural observation and mechanical properties behavior of Al2O3/Al6061 nanocomposite fabricated by stir casting process

Al2O3 PARTICLE SIZE EFFECT ON REINFORCED CU COMPOSITES PRODUCED BY HIGH ENERGY MILLING

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Microstructure and Hardness Characteristics of Al₂O₃-B₄C Particle-Reinforced Cu Matrix Composites

Microstructural observation and mechanical properties behavior of Al₂O₃/Al6061 nanocomposite fabricated by stir casting process