Evaluating the influence of milling time,and sintering temperature and time on the microstructural changes and mechanical properties of Al-Y2W3O12-AlN hybrid composites

Sethi, Jamuna; Das, Siddhartha; Das, Karabi

doi:10.1016/j.powtec.2020.08.094

Cited by 12 publications

(5 citation statements)

References 32 publications

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“…Densification increases with the sintering time up to 2.5 h, and then with further increases, it decreases. The densification is facilitated by the pining of pores at grain boundaries at this time that are easily annihilated and thus result in a reduction in residual porosities [29]. Also, sintering for a longer duration of time (up to 2.5 h) allows sufficient time for the pores to close in the matrix, and consequently, densification increases with the increase in holding time [30][31][32].…”

Section: Impact Of Sintering Time On Relative Density (Rd)mentioning

confidence: 99%

“…The grain boundary strengthening effect, load transfer effect, Orowan effect, and thermal mismatch mechanism are also the other main factors responsible for increased strength and hardness [39]. However, higher times (3.5 h) also led to grain growth, increased residual porosity and thus, a reduction in hardness [29,38].…”

Section: Impact Of Sintering Time and Burnt Sugarcane Bagasse Powder ...mentioning

confidence: 99%

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Characterization and optimisation of physical/mechanical properties of aluminium/alumina/sugarcane‐bagasse‐powder composites using Taguchi technique

Choudhury,

Nanda,

Das

2024

Materialwissenschaft Werkst

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Burnt sugarcane bagasse powder (SCBP), with its low density, accessibility, and renewal, is an economically reinforcing material. This study fabricated composites, i. e., aluminium/alumina/burnt sugarcane bagasse powder, through the powder metallurgy route. The physical, mechanical, microscopic, and chemical characterization of the composites, such as relative density, microhardness, uniaxial compression, scanning electron microscopy, and x‐ray diffraction, has been conducted. There is a gain in relative density, microhardness and ultimate compression strength of about 2.25 %, 48.07 % and 33.34 % respectively, compared to the base composite (aluminium/4 wt.‐% alumina) at 3 wt.‐% burnt sugarcane bagasse powder. The Taguchi methodology is used as a statistical tool to optimise the response variables. An analysis of variance (ANOVA) is used to find the contribution of input parameters to response variables, and the regression models have been developed. The contribution of factors ‘burnt sugarcane bagasse powder wt.‐%’ and ‘time’ on relative density is 81.65 % and 13.64 %, respectively, while the contribution of the same factors on microhardness is 95.98 % and 3.377 %, respectively. The results of the Taguchi method reveal that the optimised conditions for the highest relative density and microhardness are 3 wt.‐% burnt sugarcane bagasse powder and 2.5 h, which have confirmed the experimental results.

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Section: Impact Of Sintering Time On Relative Density (Rd)mentioning

confidence: 99%

Section: Impact Of Sintering Time and Burnt Sugarcane Bagasse Powder ...mentioning

confidence: 99%

Characterization and optimisation of physical/mechanical properties of aluminium/alumina/sugarcane‐bagasse‐powder composites using Taguchi technique

Choudhury,

Nanda,

Das

2024

Materialwissenschaft Werkst

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“…The optimization process aims to select a set of requirements (optimum factors) to meet all the goals (needed results). 45,46 Since the value relies on how closely the lower and upper boundaries are set to the actual needed results, the desirability value doesn't have to be 1. Using the Design-Expert software, a set of 12 optimal solutions is used for the design space conditions for density, hardness, UCS, and weight loss.…”

Section: Response Surface Model Developmentmentioning

confidence: 99%

Experimental investigation and numerical modeling of mechanically alloyed Al-TiC composites

Habba

Barakat

2023

Journal of Composite Materials

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The present work studies the mechanical alloying, consolidation, evaluation, modeling, and optimization of the Al-TiC composites mixed at different milling times (MTs) of 6, 12, 24, and 48 h and reinforced with three TiC concentrations (3, 6, and 12 vol.%). The Al-TiC composites formed via the powder metallurgy method. The XRD of the mixed powder and the consolidated composites were investigated. Furthermore, density, wear, compressive strength, and hardness have been examined for the consolidated composites. Also, the worn surface of the wear-tested composites was studied utilizing SEM analysis. The response surface methodology (RSM) was involved to clarify the effects of mechanical alloying parameters of MTs and the TiC concentrations and their interaction towards achieving their optimum process factors to produce Al-TiC composites. The RSM results prove the applied factors’ importance in improving the consolidated composites’ properties. The optimization results show the optimum parameters to produce Al-TiC composites are 28.4 MTs and 12 vol.% TiC to produce Al-TiC composites with 304.4 ± 3 MPa compressive strength, 191.21 ± 2 HV hardness, 2.88 ± 0.008 g/cm3 density, and 9.7 ± 0.01 mg weight loss. The ANOVA analysis reveals that the suggested models can virtually expect the tested responses of density, hardness, compressive strength, and weight loss with a confidence level of over 90, 98, 95, and 95%, respectively.

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“…The researchers observed uniform dispersion of the AlN nanoparticles within the Cu matrix. On the other hand, Sethi et al [23] investigated the effect of the milling time, sintering temperature, and duration on the microstructural changes of Al-Y 2 W 3 O 12 -AlN hybrid composites and verified the absence of any interfacial reaction between the matrix and the reinforcements.…”

Section: Microstructural Behaviourmentioning

confidence: 99%

Experimental Investigations of Microstructural and Mechanical Behaviour of Aluminium Alloy 7075 Hybrid Nanocomposites

Kishore,

Padal,

Raju

2023

CTP

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In this paper, the microstructural and mechanical characterisation of hybrid composites with a metal matrix was conducted. Al2O3 nanoparticles and CNTs were added to strengthen an aluminium alloy (AA 7075) using solid-state powder metallurgy. Utilizing XRD analysis and scanning electron microscope (SEM), microstructural characterization was carried out. Uniaxial compression and microhardness testing were performed to determine how the hybrid composites behaved mechanically. The microstructural research revealed that the nanoparticle dispersion in the matrix is uniform. The XRD plots and the Williamson-Hall equation were used to evaluate the crystallite size, lattice strain and dislocation density. In comparison to the base alloy, the composites have better strength and micro hardness.

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Evaluating the influence of milling time,and sintering temperature and time on the microstructural changes and mechanical properties of Al-Y2W3O12-AlN hybrid composites

Cited by 12 publications

References 32 publications

Characterization and optimisation of physical/mechanical properties of aluminium/alumina/sugarcane‐bagasse‐powder composites using Taguchi technique

Characterization and optimisation of physical/mechanical properties of aluminium/alumina/sugarcane‐bagasse‐powder composites using Taguchi technique

Experimental investigation and numerical modeling of mechanically alloyed Al-TiC composites

Experimental Investigations of Microstructural and Mechanical Behaviour of Aluminium Alloy 7075 Hybrid Nanocomposites

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