Development of rare-earth oxides based hybrid AMCs reinforced with SiC/Al2O3: mechanical &amp; metallurgical characterization

Sharma, Vipin Kumar; Kumar, Vijay

doi:10.1016/j.jmrt.2019.01.013

Cited by 35 publications

(10 citation statements)

References 28 publications

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“…When compared to 7075-7.5 wt percent Gr amalgamated, which had a much higher coefficient of friction (COF), the sliding speed was raised from 1 m/s to 2 m/s while the force was held constant at 49 N. Following the results of the test, the researchers investigated the factors that led to the worn surfaces of the specimens. In [20] authors conducted the wear test, the layer of oxides and iron that had been mechanically mixed together served as an efficient tribolayer, which increased the wear resistance even when subjected to extraordinary sliding speeds. In [21], authors investigated the impact that Al2O3 reinforcement has on the dry sliding performance of AA8011 matrix composites for braking applications.…”

Section: Related Workmentioning

confidence: 99%

Experimental Investigation on Metal Matrix Nanocomposite: Aluminium Alloy 6061 and 7075 with SiC and Fly Ash

Kotteda¹,

Eshwar²,

Balakrishna

et al. 2022

Journal of Nanomaterials

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Aluminium metal matrix nanocomposites (AMMNCs) have been recognized as a promising material with excellent structural and functional characteristics that can be suggestively personalized to satisfy industrial demands as well as design requirements for a wide range of applications, including those in defense, marine, automobiles, and aerospace. Particularly, these industries are using an increasing number of components manufactured by AMMNCs. When compared to monolithic materials, components manufactured from aluminium-based composites have better qualities such as tribological behaviors, hardness, stiffness, strength, and higher strength to weight ratio. Therefore, this article addresses the experimental investigation on aluminium-based metal matrix nanocomposites (MMNCs) with silicon carbide (SiC) and fly ash (FA) as a reinforcement material with distinct ratios. Here aluminium alloy 6061 and 7075, hereafter referred as AA6061 and AA7075, are considered as base material. The final workpieces obtained using the process of stir casting and machining are tested to compute the output response parameters like yield strength (YS), wear rate (WR), hardness, impact strength (IS), and ultimate tensile strength (UTS). In addition, the scanning electron microscopy (SEM) images also studied for examining the distribution of reinforcement material particles in base metal.

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Section: Related Workmentioning

confidence: 99%

Experimental Investigation on Metal Matrix Nanocomposite: Aluminium Alloy 6061 and 7075 with SiC and Fly Ash

Kotteda¹,

Eshwar²,

Balakrishna

et al. 2022

Journal of Nanomaterials

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“…When the particle content increased to 3.5 wt.% (1.5 wt.% NbB 2 , 2 wt.% Al 2 O 3 ), more heat was released from the reaction, and the reaction process became more violent, resulting in melt sputtering and a decrease in the actual particle content in the melt; therefore, the grain size coarsened [17] and the average grain size increased to 30 µm, as shown in Figure 8h. The in situ-created NbB 2 and Al 2 O 3 particles operated as nucleation masses during solidification, increasing the number of non-uniform nuclei and decreasing the amount of subcooling required for solidification, which helped to refine the grains [28][29][30][31][32][33]. The in situ NbB 2 and Al 2 O 3 particles were randomly dispersed along the grain borders, thereby impeding grain boundary movement and preventing grain expansion.…”

Section: Effect Of In Situ Particles On the Grain Structure And Prope...mentioning

confidence: 99%

“…This is because the possibility of particle agglomeration grows as the content of the complex-phase particles increases and the agglomeration phenomena between the particles becomes more severe [36]. When a composite material is subjected to external pressures, the stress concentration increases, the interfacial bonding capacity between the two particle clusters and the matrix weakens, and the microcracks continue to expand, finally leading to fractures [33,36]. As a result, the more-appropriate inclusion of the complex-phase particles was 2.3 wt.%, and the strength and toughness of the as-cast composites were enhanced.…”

Section: Effect Of In Situ Particles On the Grain Structure And Prope...mentioning

confidence: 99%

The Reaction Products of the Al–Nb–B2O3–CuO System in an Al 6063 Alloy Melt and Their Influence on the Alloy’s Structure and Characteristics

Zhang

Zhai

et al. 2022

Materials

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To meet aero-engine aluminum skirt requirements, an experiment was carried out using Al–Nb–B2O3–CuO as the reaction system and a 6063 aluminum alloy melt as the reaction medium for a contact reaction, and 6063 aluminum matrix composites containing in situ particles were prepared with the near-liquid-phase line-casting method after the reaction was completed. The effects of the reactant molar ratio and the preheating temperature on the in situ reaction process and products were explored in order to determine the influence of in situ-reaction-product features on the organization and the qualities of the composites. Thermodynamic calculations, DSC analysis, and experiments revealed that the reaction could continue when the molar ratio of the reactants of Al–Nb–B2O3–CuO was 6:1:1:1.5. A kinetic study revealed that the Al thermal reaction in the system produced Al2O3 and [B], and the [B] atoms interacted with Nb to generate NbB2. With increasing temperature, the interaction between the Nb and the AlB2 produced hexagonal NbB2 particles with an average longitudinal size of 1 μm and subspherical Al2O3 particles with an average longitudinal size of 0.2 μm. The microstructure of the composites was reasonably fine, with an estimated equiaxed crystal size of around 22 μm, a tensile strength of 170 MPa, a yield strength of 135 MPa, an elongation of 13.4%, and a fracture energy of 17.05 × 105 KJ/m3, with a content of 2.3 wt% complex-phase particles. When compared to the matrix alloy without addition, the NbB2 and Al2O3 particles produced by the in situ reaction had a significant refinement effect on the microstructure of the alloy, and the plasticity of the composite in the as-cast state was improved while maintaining higher strength and better overall mechanical properties, allowing for industrial mass production.

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“…Ponappa et al [20] have proved that Y 2 O 3 particles incorporation to AZ91D alloy enhances hardness, Youngs modulus and yield strength of alloy and greatly influences on the microstructure as well as aids for grain refinement. Sharma and Kumar [21] shown that rare earth compound CeO 2 particles addition to Al6061/ SiC/Al 2 O 3 hybrid MMC improves the hardness and causes grain refinement significantly resulting smooth and fine structure. Also, ultimate tensile strength and ductility improvement were also observed due to CeO 2 loading.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Microstructure and Tensile Fractography of RE Oxides (CeO2/Y2O3) Reinforced AZ91D Magnesium Matrix Composites

Gotagunaki¹,

Mudakappanavar²,

Suresh

2022

Frattura Ed Integrità Strutturale

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The current work aims to investigate the mechanical properties of rare oxide reinforced Mg alloy based MMCs. Magnesium matrix considered in the study is AZ91D alloy, whereas rare earth oxides reinforced were CeO2 and Y2O3. The Y2O3 particulate reinforcement percentage was varied from 1 to 3% in the steps of 1% to study its influence on mechanical properties of MMCs. Stir casting route was adopted to fabricate sample for study. Microstructure analysis illustrated the uniform distribution of particulate in matrix alloys. The obtained results revealed the enhanced mechanical properties such as tensile strength, yield strength, elongation and hardness of MMCs due to increased percentage of reinforcement. Fractography analysis of fracture surfaces demonstrated the microcracks and cleavage were dominant in pure alloy. While particle debonding, extensive plastics deformation were prominent in-addition to microcracks in MMCs.

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Development of rare-earth oxides based hybrid AMCs reinforced with SiC/Al2O3: mechanical & metallurgical characterization

Cited by 35 publications

References 28 publications

Experimental Investigation on Metal Matrix Nanocomposite: Aluminium Alloy 6061 and 7075 with SiC and Fly Ash

Experimental Investigation on Metal Matrix Nanocomposite: Aluminium Alloy 6061 and 7075 with SiC and Fly Ash

The Reaction Products of the Al–Nb–B2O3–CuO System in an Al 6063 Alloy Melt and Their Influence on the Alloy’s Structure and Characteristics

Investigation on Microstructure and Tensile Fractography of RE Oxides (CeO2/Y2O3) Reinforced AZ91D Magnesium Matrix Composites

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