Investigations on mechanical and machinability behavior of aluminum/flyash cenosphere/Gr hybrid composites processed through compocasting

Kumarasamy, Soorya Prakash; Kavimani, V.; Thankachan, Titus; Muthukutti, Gopal Pudhupalayam

doi:10.1016/j.jart.2017.05.005

Cited by 79 publications

(16 citation statements)

References 33 publications

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“…The load bearing capacity also reduces because of the presence of GSA. Similar trend of decrease in tensile strength was reported by other researchers while increasing RHA, fly ash, particles in the composites [51,52]. The sample S3 has the highest (348.45 N/mm 2 ) tensile strength among other samples.…”

Section: Effect Of Gsa and B 4 C On Tensile Strength And Elongationsupporting

confidence: 86%

Microstructural characteristics and mechanical behaviour of aluminium hybrid composites reinforced with groundnut shell ash and B4C

Venkatesh¹,

Ravikumar²

2019

J Braz. Soc. Mech. Sci. Eng.

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In this study, aluminium hybrid composites were fabricated by reinforcing eco-friendly agrowaste, groundnut shell ash and boron carbide using squeeze casting method. Groundnut shell ash and boron carbide were added in ratios of 2.5:7.5, 5:5 and 7.5:2.5 percentages by weight. The impact on mechanical properties namely density, hardness, tensile strength, impact strength was studied, and the results were compared with the matrix alloy. The fracture mechanism of tensile and impact specimens were studied by scanning electron microscopy. Microstructural study reveals the uniform distribution and good bonding of reinforcements with clear interface in the hybrid composite. The hardness and tensile strength increased up to a maximum of 17% and 18.32%, respectively, and then slightly decreased while increasing groundnut shell ash particles. Increasing groundnut shell ash particles in hybrid composites decreases the impact strength and density to a maximum of 12% and 7.5%. Dimples, voids, cracks, clusters and particle fracture are characterised by fracture mechanism. Brittle fractures in the form of cracks, and particle fractures were formed due to the solid interfacial bonding between the reinforcements and alloy. Ductile fractures are the reason for high impact strength and are characterised by dimples and voids. The eco-friendly groundnut shell ash has the potential to serve as reinforcement for the development of composites.

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Section: Effect Of Gsa and B 4 C On Tensile Strength And Elongationsupporting

confidence: 86%

Microstructural characteristics and mechanical behaviour of aluminium hybrid composites reinforced with groundnut shell ash and B4C

Venkatesh¹,

Ravikumar²

2019

J Braz. Soc. Mech. Sci. Eng.

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“…The most appropriate process parameters at which maximum UTS of 340 MPa was obtained were stirring speed of 400 rpm, temperature of 490 °C, and time of 30 min. Kumarasamy et al [ 166 ] adopted compocasting for the fabrication of fly ash (FA) cenosphere, and Gr p ‐reinforced Al 7075 composites and noted the highest tensile strength and rockwell hardness on B scale of 213 MPa and 62 HRB, respectively, with greater uniformity of the distribution of the added particles ( Table 2 ). This technique is being used for the production of some pistons and brake cylinders, however, it is still in its emerging state.…”

Section: Processing Techniques Of Amcsmentioning

confidence: 99%

A Critical Review on Synthesis of Aluminum Metallic Composites through Stir Casting: Challenges and Opportunities

2020

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Aluminum metallic composites (AMCs) have been recognized as promising material exhibiting excellent functional and structural properties that can be significantly tailored to meet the industrial demands as well as to meet the design criteria for many applications such as aerospace, automobiles, marine, defense, and so on. Herein, an effort is made to provide an extensive overview of the various processing techniques adopted for the development of AMCs. Various processing kinetics of stir casting technique are elaborated comprehensively in terms of existing challenges, conceivable modifications incorporated in it. Considering the critical assessment on mechanical properties made through various kinds of literature, an electromagnetic stir-squeeze casting synergically equipped with ultrasonic transducing probe and bottom pouring attachments is recommended as the most appropriate processing technique for the development of AMCs. Moreover, appropriate recommendations regarding process variables and additives/modifiers, and potential future research opportunities are also addressed significantly to encourage the ongoing and upcoming researchers, which lead this critical Review toward novelty and uniqueness.

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“…This removal of reinforcement results in formation of cavities in the materials surface and that causes higher surface roughness. Increase in the cutting speed decreases the roughness of the machined surface [8]. Increase in speed decreases the size of built up edge which results in decreased surface roughness at high speed.…”

Section: Effect Of Parameters On Surface Roughnessmentioning

confidence: 99%

Influence of Solid Lubricant Particles on Surface Roughness in Turning Hybrid Metal Matrix Composites

2018

IJCTR

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The current study presents an experimental examination on surface roughness in turning Al6061/10B 4 C, Al6061/10B 4 C/2%MoS 2 ,Al6061/10B 4 C/4%MoS 2 and Al6061/10B 4 C/6 % MoS 2 composites. The novel composite is fabricated through stir casting composite by reinforcing constant amount of boron carbide ceramic particles (10% in weight) and varying weight percentage of MoS 2 solid lubricant (0, 2, 4 and 6). Turning experiments were conducted based on the Taguchi L16 orthogonal array experimental design with carbide tool. The results reveals that the increase in weight percentage of MoS 2 leads to increased surface roughness values. The ANOVA results indicated that feed has highest influence on surface roughness followed by MoS 2 content, depth of cut and speed. Increase in MoS 2 content in the composite results in discontinuous chip formation which indicates the ease of machining.

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Investigations on mechanical and machinability behavior of aluminum/flyash cenosphere/Gr hybrid composites processed through compocasting

Cited by 79 publications

References 33 publications

Microstructural characteristics and mechanical behaviour of aluminium hybrid composites reinforced with groundnut shell ash and B4C

Microstructural characteristics and mechanical behaviour of aluminium hybrid composites reinforced with groundnut shell ash and B4C

A Critical Review on Synthesis of Aluminum Metallic Composites through Stir Casting: Challenges and Opportunities

Influence of Solid Lubricant Particles on Surface Roughness in Turning Hybrid Metal Matrix Composites

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