Effect of 6 Wt.% Particle (B4C + SiC) Reinforcement on Mechanical Properties of AA6061 Aluminum Hybrid MMC

Bommana, Divakar; Dora, T. Rajesh Kumar; Senapati, N.; Kumar, Ajay

doi:10.1007/s12633-021-01210-4

Cited by 19 publications

(3 citation statements)

References 38 publications

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“…The ability to tailor the material properties allows HMMCs to deliver improved mechanical strength, stiffness, and durability compared to conventional materials. Such characteristics make them highly desirable in industries where lightweight and high-strength materials are critical, such as aerospace and automotive engineering [22,23].…”

Section: Introductionmentioning

confidence: 99%

Synergistic effects of cold rolling and age hardening on the hardness and tensile characteristics of AA6061 hybrid composites

Sadanand,

Sharma,

Prabhu

2024

Mater. Res. Express

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The present study involves the fabrication of aluminium alloy 6061 matrix hybrid composites with varying weight fractions of silica sand and copper particles by employing the conventional stir casting method. The combined influence of age hardening (AH) and low temperature thermomechanical treatment (LTMT) on the hardness and tensile properties of AA6061 hybrid composites was investigated. The uniform dispersion of the particles in the matrix was confirmed by microstructure analysis and the improvement of Brinell hardness values. The composites exhibited higher tensile strength and hardness than the base alloy. The peak hardness and tensile strength at the peak aged condition of the hybrid composites were determined through the Vickers hardness and tensile test, respectively. Both AH and LTMT enhanced the properties of the hybrid composites, and a comparison between them revealed the best results for LTMT hybrid composites. The LTMT hybrid composite with 3 wt.% silica sand and 3 wt.% copper (3S3C) subjected to 12% rolling deformation and aged at 100 °C had the highest Vickers hardness and tensile strength of 144.26 HV and 290 MPa, respectively. The hardness and tensile strength of AA6061-3S3C hybrid composite subjected to LTMT in peak aged condition showed an improvement of 125 and 97%, respectively, compared with those of AA6061 alloy. Fracture surface analysis of the thermomechanical treated composites in peak aged condition showed a mixed mode of failure dominant with the ductile fracture.

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Section: Introductionmentioning

confidence: 99%

Synergistic effects of cold rolling and age hardening on the hardness and tensile characteristics of AA6061 hybrid composites

Sadanand,

Sharma,

Prabhu

2024

Mater. Res. Express

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“…ere are a number of automotive and aerospace industries where Al 7075-ZnO castings have been used [1,2]. ese include the engine blocks, the cylinder heads of automobile engines, and transmission housings of automobile engines, as well as wheel rims, the powertrains, and suspension components of automobile engines [3][4][5]. Modern businesses have developed composites (including reinforcements) that have improved toughness and plasticity, as well as the aforementioned qualities, as a result of technological breakthroughs [6].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Mechanical and Microstructure Characteristics of Stir Casting and Hot-Pressed AA 7075/ZnO/ZrO2 Composites

Satishkumar

Murthi²,

Chebolu

et al. 2022

Advances in Materials Science and Engineering

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The composite was made using the stir cast manufacturing method. Many parameters, like stirring speed, stirring time, ZrO2% reinforcement, and cast temperature, are evaluated in a Taguchi experimental design to see how they affected the composite properties. In terms of composite properties, ZrO2% reinforcement and the stir speed have the most significant impact. There were 25.02% gains in ultimate tensile strength and hardness, as well as a decrease in composite wear loss, when the optimal stir casting parameters were used compared to the initial stir casting settings. To get insight into the process and the qualities of the composite, the hot-pressing parameters were studied. Pressure, followed by temperature, is the most critical factor in determining the properties of composites. When a hot-pressing setting was determined to reduce the wear loss by a significant 39.3%, it was deemed perfect by the superranking concept. Under ideal conditions, hot-pressing procedures reduced wear loss by 40.8% while boosting ultimate tensile strength and hardness by 19.83% and 9.6%, respectively. The resulting microstructures and worn surface morphologies from stir casting and hot pressing show vastly different properties.

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“…Due to their superior rigidity and strength, composites have replaced traditional materials [5]. Continuous bres, discontinuous bres, and particles can reinforce composites consisting of metal or polymer components [6,7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Mechanical and Tribological Properties of AA6061/MWCNT/B4C Hybrid Metal Matrix Composite

Satishkumar¹,

Natarajan²,

Rajasekaran

et al. 2022

Advances in Materials Science and Engineering

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Carbon nanotubes (CNTs) and graphene, in particular, have been the subject of many recent studies since their discovery in the early 2000s. Because of their unusual properties, carbon nanotubes (CNTs) have piqued the interest of scientists across a wide range of disciplines. An Al matrix was reinforced with powder metallurgy-fabricated B4C and CNT composites. The nanocomposite aluminium matrix was examined for tribological behaviour, density, stiffness, and compressive strength before and after hot isostatic pressing (HIP). Scanning electron microscopy and TEM were used to analyze the carbon nanotubes and their hybrid counterparts (SEM). The density of nanocomposites was reduced by 38% without HIP but by 45% after it was added to the mixture. Hardness was also increased by 40%, but following HIP, the hardness rose to 67%. Before and after HIP, the compression strength increased by 39% and 60%, respectively. HIP improves the wear rate by 45%, and B4C and CNTs improve the coefficient of friction by 20% in all volume fractions but only by 48% in the case of nanocomposites.

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Effect of 6 Wt.% Particle (B4C + SiC) Reinforcement on Mechanical Properties of AA6061 Aluminum Hybrid MMC

Cited by 19 publications

References 38 publications

Synergistic effects of cold rolling and age hardening on the hardness and tensile characteristics of AA6061 hybrid composites

Synergistic effects of cold rolling and age hardening on the hardness and tensile characteristics of AA6061 hybrid composites

Optimizing the Mechanical and Microstructure Characteristics of Stir Casting and Hot-Pressed AA 7075/ZnO/ZrO2 Composites

Investigation of Mechanical and Tribological Properties of AA6061/MWCNT/B4C Hybrid Metal Matrix Composite

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