Studies on Mechanical and Machinability Properties of B&lt;sub&gt;4&lt;/sub&gt;C&lt;sub&gt;p&lt;/sub&gt; Reinforced 6061Aluminum MMC Produced via Melt Stirring

Hiremath, Vijaykumar; Dundur, Suresh T.; Bharath, Raj L.; Rajesh, G.L.; Auradi, V.

doi:10.4028/www.scientific.net/amm.592-594.744

Cited by 10 publications

(4 citation statements)

References 12 publications

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“…Composite contains a phase called matrix that holds together and gives form to stronger, stiffer reinforcement constituent resulting in a material with perfect blend of structural properties far better than its constituent parts alone [6]. Combination of properties that make composites superior over conventional structural materials are good design flexibility, high specific strength and specific modulus, high fatigue endurance limit, corrosion and wear resistance, thermal cycling tolerance, tolerable coefficient of thermal expansion etc [7]. Relative amount and properties of constituent phases, geometry of dispersed phase including particle size, shape, and orientation in the matrix directs properties of composites.…”

Section: Microstructural Characterization Mechanical and Wear Behavio...mentioning

confidence: 99%

Microstructural Characterization, Mechanical And Wear Behaviour Of Al2024-B4C Composites For Aerospace Applications

Akanksh¹,

Hegde²,

Siddharth³

et al. 2022

jmmf

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<p>Metal matrix composite plays an important role in automobile and aerospace applications. Among all the metals, aluminium is considered as the lighter metal. In present investigation aluminium-2024 is considered as the base alloy and reinforced with boron carbide to increase its hardness. Aluminium metal matrix composite is obtained by combining different percentage of boron carbide particulates in the volume fraction 2.5 wt.% and 5 wt.%. Synthesis is done by stir casting technique and the characterization is carried out using scanning electron microscope. The properties of Al2024 reinforced with boron carbide is evaluated by using tensometer, pin on disc wear testing machine and vickers hardness tester. With the increase in the reinforcement high hardness, tensile strength and higher wear resistance is achieved. These types of MMCs are widely used in automobile and aerospace applications due to their great mechanical behaviours, low density, low factor of thermal expansion; corrosion resistance is better and increased wear resistance as compared to conventional metals and alloys. Improved mechanical property of these composites makes them very useful for various applications in many areas from technological point of view.</p>

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Section: Microstructural Characterization Mechanical and Wear Behavio...mentioning

confidence: 99%

Microstructural Characterization, Mechanical And Wear Behaviour Of Al2024-B4C Composites For Aerospace Applications

Akanksh¹,

Hegde²,

Siddharth³

et al. 2022

jmmf

View full text Add to dashboard Cite

show abstract

“…To measure the hardness Vickers hardness tester (Model: Olympus) having a load range of 25 g to 1000 g is used. The ASTM E384 [22] standard is used for testing. Loads are applied by dead weight.…”

Section: Testing Of Compositesmentioning

confidence: 99%

Effect of micro graphite particles on the microstructure and mechanical behavior of aluminium 6061 (Al-Mg-Si) alloy composites developed by novel two step casting technique

Nagaral

K²,

Auradi

et al. 2021

J Met Mater Miner

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In the present research, the effect of micron sized graphite addition on the microstructure and tensile failure of Al6061 alloy has been studied. The Al6061 alloy metal matrix composites reinforced with 6, 9 and 12 varying weight percentages of graphite particles were fabricated by novel two step stir cast route which helps in improving the wettability of Al6061 alloy matrix with graphite particles. The synthesized composites were subjected to microstructural studies, density, hardness and tensile properties testing. Microstructural characterizations of obtained samples were carried out by SEM microscopy, EDS and XRD patterns. The occurrence of graphite particles were confirmed by the XRD patterns. The density and hardness of metal composites have been decreased with adding of graphite reinforcement, while the ultimate tensile strength and yield strengths were improved with the addition of graphite particles. There was increase in the elongation of the Al6061 alloy composite after the incorporation of the reinforcement. Various fracture mechanisms were observed in the Al6061-graphite composites using SEM.

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“…The qualities of MMCs are largely determined by the processing method used. The processing approaches for manufacturing composites are determined by whether the reinforcement is added to the matrix in a solid or liquid state [7,8]. Stir casting is a favoured processing technique for fabricating composites in the liquid state because of its flexibility, economy, and ability to generate bulk quality production [9].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and tribological behavior of flyash, red mud and mica particles reinforced Al7075 alloy hybrid metal composites

et al. 2022

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In the present research Al7075 alloy with 1, 3 and 5 varying weight percentages of flyash, 1, 2 and 3 varying wt.% of red mud along with constant 4 wt.% of mica particles composites were synthesized by stir casting technique. Thus prepared Al7075 alloy composites were subjected to the microstructural characterization using SEM and EDS. Mechanical properties were evaluated to know the impact of multi micro particles addition on the hardness, ultimate strength, yield strength, and ductility behavior of Al7075 alloy composites. Further, wear behavior of the prepared Al7075 alloy with mica, flyash and redmud composites were experimented using pin-on-disc apparatus by varying normal load and sliding velocity at constant 3000 m sliding distance. The improved mechanical properties were observed with the addition of micro scaled flyash, redmud and mica particles, further improvement was attained with the increasing weight percentage of flyash and red mud in the Al7075 matrix alloy. However, there was decrease in the ductility of the composites with an incorporation of hard micro particles in the soft Al matrix. Fractography and worn surface analysis were carried out to know the influence of micro particles on the tensile failure and wear surfaces of the composites.

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Studies on Mechanical and Machinability Properties of B<sub>4</sub>C<sub>p</sub> Reinforced 6061Aluminum MMC Produced via Melt Stirring

Cited by 10 publications

References 12 publications

Microstructural Characterization, Mechanical And Wear Behaviour Of Al2024-B4C Composites For Aerospace Applications

Microstructural Characterization, Mechanical And Wear Behaviour Of Al2024-B4C Composites For Aerospace Applications

Effect of micro graphite particles on the microstructure and mechanical behavior of aluminium 6061 (Al-Mg-Si) alloy composites developed by novel two step casting technique

Mechanical and tribological behavior of flyash, red mud and mica particles reinforced Al7075 alloy hybrid metal composites

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