Mechanical characterization of aluminium 6061 hybrid metal matrix composites

Subramani, Nithin Kundachira; Haridass, R.; Krishnan, Remya; Loganathan, D.; Manikandan, N.

doi:10.1016/j.matpr.2022.07.287

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…The six-series aluminum alloys are weaker than the two- and seven-series aluminum alloys, but their plasticity and toughness show significant improvement [ 21 , 22 , 23 ]. 6061Al, an excellent material, not only has the advantages of high strength, good corrosion resistance, and low cost, but also has excellent formability, weldability, and machinability [ 24 , 25 ]. Common additions to particle-reinforced aluminum matrix composites include TiC, SiC, B 4 C, Al 2 O 3 , TiO 2 , SiO 2 , ZrB 2 , TiB 2 , etc.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Micron-Sized TiB2 Particles on the Properties of Al6061 Strengthened with 4% TiB2 Nano-TiB2

Zheng,

Long,

Zhu

et al. 2023

Materials

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Dual-scale (nano and micron) particle-reinforced TiB2/6061Al matrix composites with different contents of TiB2 were prepared using powder metallurgy, and then analyzed via microstructure observation and tests of microhardness, tensile properties, and friction and wear properties. The 6061Al powders’ particles changed from spherical to flaky after two rounds of high-energy ball milling, and the TiB2 enhancer was embedded in or wrapped by the matrix particles after high-energy ball milling. Metallurgical bonding between TiB2 particles and the matrix was achieved, and Al3Ti was synthesized in situ during sintering. The hot-pressing process eliminated the internal defects of the composites, and the TiB2 particles were diffusely distributed in the matrix. The best comprehensive mechanical properties (hardness and tensile strength) were achieved when the mass fraction of TiB2 was 5% (1% micron + 4% nano); the hardness and tensile strength of the composites reached 131 HV and 221 MPa—79.5% and 93.9% higher than those of the pure matrix, respectively. The composites’ average coefficient of friction and volumetric wear rate were reduced. Composites with a TiB2 mass fraction of 7% (3% micron + 4% nano) had the highest average coefficients of friction and the lowest volumetric wear rate of 0.402 and 0.216 mm3∙N−1∙m−1, respectively. It was observed that adhesion influences the friction mechanism, which transitions from adhesive wear with slight oxidative wear to abrasive wear.

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Section: Introductionmentioning

confidence: 99%

The Effect of Micron-Sized TiB2 Particles on the Properties of Al6061 Strengthened with 4% TiB2 Nano-TiB2

Zheng,

Long,

Zhu

et al. 2023

Materials

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Investigation of the attributes of multi-walled carbon nanotubes in cryogenic environments after epoxy matrix curing

Nataraj,

Baskaran,

Ezhilvannan

et al. 2024

Innov. Emerg. Technol.

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The enhancement of mechanical properties in composite materials at cryogenic temperatures is a critical challenge addressed in this study, particularly targeting applications in aerospace engineering, such as the development of materials for spacecraft structures and in the storage and transportation of liquefied gases, representing a significant advancement in the field of cryogenic engineering materials. Using multi-walled carbon nanotubes (MWNTs) in epoxy matrixes, this study addresses a long-standing issue of poor interfacial adhesion while setting a new benchmark for composite mechanical performance under extreme conditions, focusing on the integration of MWNTs into epoxy resin matrixes. Poor interfacial adhesion between matrix and reinforcing nanomaterials results in up to 50% lower reinforcing efficiency than in composites without these interfacial challenges. Aerospace and cryogenic storage materials will become more durable and efficient by addressing this challenge. New research avenues are opened, particularly in developing advanced composite materials for extreme environments. The results of this study lay the groundwork for further investigation into the optimization of nanomaterial integration and novel material combinations, which could lead to breakthrough material science advancements. An ultrasonic dispersion technique is used to strengthen the interfacial bonding of MWNTs. The results demonstrate that optimal concentrations of MWNTs enhance the tensile strength, elongation at break, and fracture toughness of composites. A cryogenic mechanical property enhancement is achieved with MWNTs by epoxy-based composites. This study suggests that composite materials containing MWNTs could be used for cryogenic applications to improve mechanical integrity under extreme conditions. This offers a promising path to developing materials with cryogenic properties.

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Mechanical characterization of aluminium 6061 hybrid metal matrix composites

Cited by 2 publications

References 11 publications

The Effect of Micron-Sized TiB2 Particles on the Properties of Al6061 Strengthened with 4% TiB2 Nano-TiB2

The Effect of Micron-Sized TiB2 Particles on the Properties of Al6061 Strengthened with 4% TiB2 Nano-TiB2

Investigation of the attributes of multi-walled carbon nanotubes in cryogenic environments after epoxy matrix curing

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