An Investigation on the Microstructure and Mechanical Properties of Al-Zn-Mg-Cu/Ti Composite Produced by Compocasting

Salarieh, Sepideh; Nourouzi, Salman; Aval, Hamed Jamshidi

doi:10.1007/s40962-021-00698-1

Cited by 12 publications

(3 citation statements)

References 69 publications

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“…Metal Matrix Composites (MMCs) fabricated by the liquid and semi-solid methods have usually higher mechanical strength due to the formation of strong bonds between the constituting materials. Salarieh et al [17] produced Al-Ti composites using the composting method and observed some intermetallic compounds in the final microstructures, despite reaching higher hardness, tensile strength, and toughness. On contrary, solid-state techniques, such as powder metallurgy, have some limitations in the size, content of the reinforcements, and mechanical strength of the produced composites [11].…”

Section: Introductionmentioning

confidence: 99%

Creep and mechanical properties of aluminium A356 composites reinforced with coated and un-coated MWCNTs fabricated using the stir casting method

Pan

2023

Materials Science and Technology

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Multi-walled carbon nanotubes (MWCNTs) possess outstanding physical and mechanical properties, making them suitable as reinforcing materials for metal-matrix composites. However, their creep resistance has not been studied well. In the present study, aluminium A356 composites reinforced with various weight percentages of MWCNTs were fabricated using the stir casting technique. The surface coating was applied to enhance the wettability of carbon nanotubes. Tensile experiments, fracture analysis, creep tests, and microstructural analyses were performed on the produced composites. Aluminium samples reinforced with 0.2 weight percentage of coated MWCNTs showed to have higher hardness (14%), yield strength (36%), ultimate tensile strength (20%), elongation at break (16%), and creep resistance (30%) compared to that of composites reinforced with uncoated MWCNTs.

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Section: Introductionmentioning

confidence: 99%

Creep and mechanical properties of aluminium A356 composites reinforced with coated and un-coated MWCNTs fabricated using the stir casting method

Pan

2023

Materials Science and Technology

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“…However, the AA1050 alloy sheet with a thickness of 4 mm was chosen as the substrate. The AA7075 aluminum alloy matrix composite rod reinforced with titanium aluminide particles was produced through a semi-solid casting process based on the method described in reference [24]. For this purpose, AA7075 aluminum alloy with a chemical composition of 0.03% Si, 0.03% Fe, 1.63% Cu, 6.61% Zn, 3.12% Mg, 0.18% Cr, and Al balance (per wt%) has been used as the composite matrix.…”

Section: Methodsmentioning

confidence: 99%

Investigation of microstructure and tribological properties of titanium-aluminide reinforced aluminum matrix composite friction surfaced on AA1050 aluminum

Aval¹

2022

Surf. Topogr.: Metrol. Prop.

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In this study, the microstructure and wear resistance of titanium-aluminide reinforced Al-Zn-Mg-Cu alloy matrix composite friction surfaced on AA1050 aluminum were investigated. The titanium-aluminide reinforced Al-Zn-Mg-Cu alloy matrix composite was fabricated using a semi-solid casting procedure at 630 °C. The results show that by increasing the consumable rod rotational speed from 800 to 1200 rpm, the width and height of the coating increased 15 and 16 %, respectively, reaching 21.4 and 1.4 mm, respectively. The findings on the coating grain size show that the effect of plastic strain is dominant over the effect of temperature. Therefore, the coating grain size decreased by increasing plastic strain. By increasing the rotation speed from 800 to 1200 rpm, the coating hardness and shear strength values increase from 121.6 to 136.3 HV and 262.2 to 274.3 MPa, respectively. Also, the titanium-aluminide reinforcement does not have much effect on the thermal stability of the coating. After artificial aging heat treatment, TiAl intermetallic compounds, in addition to the Ti3Al intermetallic compounds, are formed in the coating. By applying the coating at a rotational speed of 1200 rpm, a traverse speed of 125 mm/min, and an axial feeding rate of 75 mm/min, the wear resistance of the substrate increased by up to 151 %, respectively.

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“…The available literature on the tribological, machining, microstructure and mechanical characteristics investigations of the AMMCs suggested that to attain the superior characteristics of the resulting specimens homogenous mixing and dispersal of the reinforcing particles are significantly important and pre-requisite [3]. In literature, various Al-based MMC preparation techniques such as liquid state processing (infiltration methods), powder metallurgy (solid state processing) and casting (squeeze and stir) were reported by earlier researchers [4][5][6][7]. Stir casting process or liquid-state processing is a widely used technique for the fabrication of AMMCs [8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Graphene/h-BN and SiC/h-BN reinforcing particles on microstructural, mechanical and tribological characteristics of Al7075-based hybrid nanocomposites

Tile,

Thomas

2024

Eng. Res. Express

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Aluminium (Al) based Metal Matrix Composites (MMCs) replaced conventional alloys in numerous sectors like the automotive to aerospace industries. In this investigation, Al7075/Silicon carbide (1 wt%)/Hexagonal-boron nitride (0.5 wt%) and Al7075/Graphene (1 wt%)/Hexagonal-boron nitride (0.5 wt%) hybrid metal matrix nanocomposites (HMMNCs) prepared using an ultrasonic-assisted melt-stirring squeeze casting process. To attain the homogenous mixing of hard ceramic/nanoparticles, reduce the aggregation effect and improve wettability of the reinforcing nanoparticles in the molten slurry. Reinforcement particles mixture (Silicon carbide (1 wt%)/Hexagonal-boron nitride (0.5 wt%) and Graphene (1 wt%)/Hexagonal-boron nitride (0.5 wt%)) have been ball-milled for the duration of 1 to 6 h (hrs). To analyze the morphology of the 1–6 h ball-milled hybrid reinforcing particles mixture was analyzed via scanning electron microscope (SEM). Moreover, microstructural investigation of the Al-based HMMNCs was performed using optical microscopy (OM), field-emission scanning electron microscopy (FE-SEM) and scanning electron microscope (SEM). Also, the dispersal of hybrid reinforcing particles mixture in Al7075-based HMMNCs was examined via SEM-equipped with x-ray mapping analysis. The fabricated Al7075-based HMMNCs are tested for their tensile strength, microhardness and tribological behavior by employing universal testing machines, Vickers microhardness tester and ball-on-disc instruments. Tribological characteristics of the Al7075-based HMMNCs were observed via ball-on-disc tribometer apparatus with load (10, 15 and 20 N), time (15 min) and speed (300, 600 and 900 rpm). While investigating, it is perceived that that the wear, tensile strength, hardness and microstructure characteristics of the Al7075/Silicon carbide/Hexagonal-boron nitride and Al7075/Graphene/Hexagonal-boron nitride HMMNCs were superior over the Al7075 alloy. It is found that Vickers and Rockwell hardness of the Al7075/SiC/h-BN HMMNCs were superior by 36.87% and 16.29%, respectively, over the Al7075 specimen. Whereas, UTS of the Al7075/Graphene/h-BN HMMNCs were superior by 38.19% over the Al7075 alloy.

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An Investigation on the Microstructure and Mechanical Properties of Al-Zn-Mg-Cu/Ti Composite Produced by Compocasting

Cited by 12 publications

References 69 publications

Creep and mechanical properties of aluminium A356 composites reinforced with coated and un-coated MWCNTs fabricated using the stir casting method

Creep and mechanical properties of aluminium A356 composites reinforced with coated and un-coated MWCNTs fabricated using the stir casting method

Investigation of microstructure and tribological properties of titanium-aluminide reinforced aluminum matrix composite friction surfaced on AA1050 aluminum

Influence of Graphene/h-BN and SiC/h-BN reinforcing particles on microstructural, mechanical and tribological characteristics of Al7075-based hybrid nanocomposites

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