Al − BN interaction in a high-strength lightweight Al/BN metal-matrix composite: Theoretical modelling and experimental verification

Kvashnin, Dmitry G.; Firestein, Konstantin L.; Попов, Захар И.; Corthay, Shakti; Сорокин, Павел Б.; Golberg, Dmitri; Shtansky, Dmitry V.

doi:10.1016/j.jallcom.2018.12.261

Cited by 22 publications

(4 citation statements)

References 24 publications

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“…In addition, the formation of AlB 2 and AlN phases in Al/BN composites has an important impact on the properties of the materials. Kvashnin et al 2 , 44 – 46 used high-angle dark field scanning transmission electron microscopy (HAADF-STEM) and energy dispersive X-ray spectroscopy (EDXS) to study Al/BN samples and found that the formation of AlB 2 phase was driven by the diffusion of B atoms in the Al matrix, which was mainly located inside the Al grain, while the formation of the AlN phase was controlled by the diffusion of N atoms along the Al grain interface, and the thin layer was precipitated along the Al grain interface. Among them, the AlB 2 phase has good mechanical properties and thermal stability, which can improve the strength and high-temperature performance of the composites.…”

Section: Introductionmentioning

confidence: 99%

Influence of nano-BN inclusion and mechanism involved on aluminium-copper alloy

Zhang,

Zeng,

Wang

et al. 2024

Sci Rep

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Taking advantage of the high specific surface area of the nanoparticles, boron nitride (BN) nanoparticles were incorporated into the semi-solidified aluminium-copper alloy Al–5Cu–Mn (ZL201) system during the casting process, and its properties and enhancement mechanism were studied. The results shown that the BN in the new composite material is more uniformly distributed in the second phase (Al2Cu), which can promote grain refinement and enhance the bonding with the aluminium-based interface, and the formation of stable phases such as AlB2, AlN, CuN, etc. makes the tensile strength and hardness of the material to be significantly improved (8.5%, 10.2%, respectively). The mechanism of the action of BN in Al2Cu was analyzed by establishing an atomic model and after calculation: BN can undergo strong adsorption on the surface of Al2Cu (0 0 1), and the adsorption energy is lower at the bridge sites on the two cut-off surfaces, which makes the binding of BN to the aluminum base more stable. The charge transfer between B, N and each atom of the matrix can promote the formation of strong covalent bonds Al–N, Cu–N and Al–B bonds, which can increase the dislocation density and hinder the grain boundary slip within the alloy.

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Section: Introductionmentioning

confidence: 99%

Influence of nano-BN inclusion and mechanism involved on aluminium-copper alloy

Zhang,

Zeng,

Wang

et al. 2024

Sci Rep

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“…Aluminum composites are widely employed in automation, automobile, aircraft, defense, and aerospace industries because of their improved properties such as high wear resistance, lightweight, low thermal coefficient of expansion, high thermal conductivity, and excellent mechanical strength [7,8]. Aluminum matrix composites have been reinforced with several types of ceramic particles such as B 4 C [9], TiC [10], Al 2 O 3 [11], SiO 2 [12], BN [13], and SiC [14]. The ceramic particles were added to the aluminum matrix to improve the hardness, thermal conductivity, strength, and wear resistance [15].…”

Section: Introductionmentioning

confidence: 99%

Development of Non-Destructive Dynamic Characterization Technique for MMCs: Predictions of Mechanical Properties for Al@Al2O3 Composites

Pingale,

Gautam,

Owhal

et al. 2023

NDT

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In the past several decades, many destructive and non-destructive testing techniques have been developed to evaluate the characteristics of metal matrix composites (MMCs). This research aims to calculate the mechanical properties of the Al@Al2O3 composites by varying alumina nanoparticles (Al2O3 NPs) content using a non-invasive, position sensing detector (PSD) unit-based optical method. The composite was prepared by a powder metallurgy technique, and its characterization was conducted using SEM and XRD to understand its surface morphology and microstructure. The natural frequency and Young’s modulus of the composite were estimated experimentally. Young’s modulus was calculated using this natural frequency. The proposed study shows that Young’s modulus of the composite increases with an increase in Al2O3 NPs content in the composition, irrespective of the testing method. Along with this, natural frequency also increases with the increase in the Al2O3 NPs content. Evaluated properties were compared with the numerical modeling using COMSOL Multiphysics. The experimental and numerical results are equivalent and within the margin of error. This study illustrates the development of an experimental approach for evaluating the mechanical properties of a composite material. This experimental approach can be used whenever sample dimension and space are constrained to evaluate the mechanical behavior of nanomaterials and nanocomposites.

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“…The bonds at the interface have a significant impact on the final properties. It is widely recognized that relatively weak interface bonds increase the susceptibility to cracking [26]. Additionally, partial dissolution of precipitates leads to enrichment of the matrix in alloying elements, causing formation of secondary phases.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the microstructure, microsegregation, and phase composition of ex-situ Fe–Ni–Cr–Al–Mo–TiCp composites fabricated by three-dimensional plasma metal deposition on 10CrMo9–10 steel

Rakoczy

Hoefer

Grudzień-Rakoczy

et al. 2020

Archiv.Civ.Mech.Eng

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Quaternary powder mixtures yNi–20Cr–1.5Al–xTiCp (y = 78.5, 73.5, 68.5; x = 0, 5, 10) were deposited on ferritic 10CrMo9–10 steel to form on plates ex-situ composite coatings with austenitic-based matrix. Plasma deposition was carried out with various parameters to obtain eight variants. The microstructure, chemical composition, phase constitution, phase transformation temperatures, and microhardness of the two reference TiCp-free coatings and six ex-situ composites were investigated by X-ray diffraction, scanning and transmission electron microscopy, energy-dispersive X-ray spectroscopy, thermodynamic simulation, and Vickers microhardness measurements. All composites had an austenite matrix with lattice parameter a = 3.5891–3.6062 Å, calculated according to the Nelson–Riley extrapolation. Microstructural observations revealed irregular distribution of TiCp in the composites. Large particles generally occurred near the external surface due to the acting buoyancy effect, whereas in the interior smaller particles, with an equivalent radius around 0.2–0.6 μm, were present. Due to initial differences in the chemical composition of powder mixtures and also subsequent intensive mixing with the low-alloy steel in the liquid pool, the matrix of the composites was characterized by various chemical compositions with a dominating iron concentration. Interaction of TiCp with matrix during deposition led to the formation of nano-precipitates of M23C6 carbides at the interfaces. Based on the ThermoCalc simulation, the highest solidus and liquidus temperatures of the matrix were calculated to be for the composite fabricated by deposition of 73.5Ni–20Cr–1.5Al–5TiCp powder mixture at I = 130 A. The mean microhardness of the TiCp-free coatings was in the range 138–146 μHV0.1, whereas composites had hardnesses at least 50% higher, depending on the initial content of TiCp.

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Al − BN interaction in a high-strength lightweight Al/BN metal-matrix composite: Theoretical modelling and experimental verification

Cited by 22 publications

References 24 publications

Influence of nano-BN inclusion and mechanism involved on aluminium-copper alloy

Influence of nano-BN inclusion and mechanism involved on aluminium-copper alloy

Development of Non-Destructive Dynamic Characterization Technique for MMCs: Predictions of Mechanical Properties for Al@Al2O3 Composites

Characterization of the microstructure, microsegregation, and phase composition of ex-situ Fe–Ni–Cr–Al–Mo–TiCp composites fabricated by three-dimensional plasma metal deposition on 10CrMo9–10 steel

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