Conventional stir casting versus ultrasonic assisted stir casting process: Mechanical and physical characteristics of AMCs

Idrisi, Amir Hussain; Mourad, Abdel‐Hamid I.

doi:10.1016/j.jallcom.2019.07.076

Cited by 140 publications

(44 citation statements)

References 26 publications

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“…Transient cavitation triggers the breakdown of gas microbubbles near the reinforcement particle clusters to shatter the clustered particles and disperse them uniformly in the molten pool. In addition, acoustic flow, which is the flow of liquid due to the acoustic pressure gradient, causes the stirring to be extremely effective [ 87 ]. Squeeze casting of the composite is also greatly recommended for reducing the material defects and improving the mechanical properties.…”

Section: Discussionmentioning

confidence: 99%

A Review on AA 6061 Metal Matrix Composites Produced by Stir Casting

et al. 2021

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In recent years, many alloys as well as composites of aluminium were developed for enhanced material performance. AA 6061 is an aluminium alloy that has extensive applications due to its superior material characteristics. It is a popular choice of matrix for aluminium matrix composite (AMC) fabrication. This study provides a review on AA 6061 aluminium alloy matrix composites produced through the stir-casting process. It focusses on conventional stir-casting fabrication, process parameters, various reinforcements used, and the mechanical properties of the AA 6061 composites. Several research studies indicated that the stir-casting method is widely used and suitable for fabricating AA 6061 composites with reinforcements such as SiC, B4C, Al2O3, TiC, as well as other inorganic, organic, hybrid, and nanomaterials. The majority of the studies showed that an increase in the reinforcement content enhanced the mechanical and tribological properties of the composites. Furthermore, hybrid composites showed better material properties than single reinforcement composites. The usage of industrial and agricultural residues in hybrid composites is also reported. Future studies could focus on the fabrication of AA 6061 nanocomposites through stir casting and their material characterisation, since they have great potential as advanced materials.

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Section: Discussionmentioning

confidence: 99%

A Review on AA 6061 Metal Matrix Composites Produced by Stir Casting

et al. 2021

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“…To eliminate the porosity, secondary processes such as sintering, extrusion and rolling are necessary [73][74][75]. In the composites fabricated by stir casting technique also, the presence of porosity and agglomeration of particles are very common phenomenon [76][77][78]. The vortex in the molten pool drags impurities as well as air in the mold which results in pores and voids [79][80][81].…”

Section: Microstructural Characterization Of Amcs Fabricated By Fspmentioning

confidence: 99%

Microstructural, mechanical and wear characteristics of aluminum matrix composites fabricated by friction stir processing

Maji

Ghosh

Nath

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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Aluminum matrix composites are widely used in aerospace, automotive industry and defense sector owing to its excellent weight-to-strength ratio. Friction stir processing has emerged as an excellent technique to produce particle reinforced as well as fiber reinforced aluminum matrix composites. This article is a state of the art of aluminum matrix composite fabrication by friction stir processing route. The fabrication procedure has been discussed with carefully mentioning the parameters associated with the process. Microstructures and consequent mechanical properties of the composites have been evaluated. Particular attention is given on the microstructural modification and strengthening mechanism. Also the wear and corrosion behavior of the composites has been discussed thoroughly. Finally, the article has been concluded with some suggestions toward future work.

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“…Figure 19a shows significant numbers of cavities in the prepared specimen using white filament. The voids created by the absence of material are the centers of the defect and attracts the stresses on it [41]. The SEM image distinguishes shell and infill.…”

Section: The Effect Of Infill Rate and Additive Colormentioning

confidence: 99%

Mechanical Performance Assessment of Internally-Defected Materials Manufactured Using Additive Manufacturing Technology

Mourad

Idrisi

Christy

et al. 2019

JMMP

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Assessment of the mechanical performance of internally-defected components or struc-tures is of crucial importance to many industrial fields such as aerospace, automobile, marine, construction etc. Most of the studies available in the literature include only analytical or numerical solutions, due to difficulty in the manufacturing of a testing sample with a specific internal defect geometry for experimental evaluations. In this study, Fusion Deposition Modeling (FDM) was utilized in the 3D-printing of Polylactic Acid (PLA) samples with internal cracks, aiming to assess their impact on the samples’ mechanical performance. The defect geometry, orientation, location along the sample gauge length and the influence of the process parameters, such as the infill percentage and the material color, were investigated. The influence of the internal defects is more pronounced for a 100% infill rate if compared with a 50% infill rate as a consequence of the porosity. A maximum drop of ~14% in the peak load of defect-free samples was recorded due to the presence of the internal defect. Moreover, the additive color to the PLA material might contribute to the material strength. Generally, the findings of this work could open another door for utilizing the additive manufacturing in many research areas, with potential industrial applications relevant to the assessment of internally-defected materials.

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Conventional stir casting versus ultrasonic assisted stir casting process: Mechanical and physical characteristics of AMCs

Cited by 140 publications

References 26 publications

A Review on AA 6061 Metal Matrix Composites Produced by Stir Casting

A Review on AA 6061 Metal Matrix Composites Produced by Stir Casting

Microstructural, mechanical and wear characteristics of aluminum matrix composites fabricated by friction stir processing

Mechanical Performance Assessment of Internally-Defected Materials Manufactured Using Additive Manufacturing Technology

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