Mechanical and wear characterization of LM13/SiC/Gr dispersed hybrid composites formed through stir casting

Kumar, Jitendra; Smart, D.S. Robinson

doi:10.1016/j.matpr.2021.03.117

Cited by 3 publications

(4 citation statements)

References 10 publications

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“…Hard ceramic materials dispersed in an Al matrix improve the material's strength, hardness, wear and corrosion resistance, stiffness, and thermal stability [11][12][13][14]. Due to their widespread applications in fabricating automotive parts (e.g., brake discs, drums, backplate, engine block, piston, and gearbox parts) [15][16][17][18], aerospace (e.g., fan exit guide vane in a gas turbine engine, rotating blade sleeves in helicopters, and flight control hydraulic manifolds) [19][20][21], and biomedical devices, other industries, researchers primarily focused on AMCs. Stir casting, one of the traditional AMC fabrication methods, has problems such as voids, wettability, a chemical reaction between matrix and reinforcement, and so on [6,[22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Multi-response optimization of process and reinforcement parameters of hybrid reinforced Al matrix composites using Taguchi- Grey relational analysis

et al. 2022

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Hybrid aluminum matrix composites (HAMCs) are a new class of advanced composite and hybrid materials that can be customized and engineered to achieve specific properties for specific applications in specific environments. HAMCs are popular in the transportation industry due to their reduced cost and fuel consumption as compared to conventional materials. This research article has mainly focused on multi-response optimization through an L16 orthogonal array experimental design employing Taguchi-based Grey Relational Analysis. It was intended to explore the influence of tetra hybrid reinforced HAMCs synthesized using pure Al matrix with fixed wt% of primary reinforcements (5 wt% SiC and 5 wt% Al2O3) and varying wt% of secondary reinforcements such as (0.5, 2.5, 4.5, and 6.5) wt% of Gr and (0.5, 2.5, 4.5, and 6.5) wt% of SCBA on physicomechanical properties of HAMCs when milling time, compaction pressure, and sintering temperature were varied. The Taguchi-Grey's relational analysis gave the optimal combination of the process and reinforcement parameters for both the physical and the mechanical properties such as milling time (5 hrs.), compaction pressure (55 MPa), sintering temperature (450 °C), Gr content (0.5 wt%), and SCBA content (4.5 wt%). At the optimum parameter settings, the average density, porosity, hardness, compressive strength, and ultimate tensile strength were 2.5118 gm/cm3, 0.8653%, 4228.45 MPa, 343.33 MPa, and 1516.41 MPa, respectively. The utilization of Taguchi and GRA methods has significantly confirmed that the influence of compaction pressure was highest among all the other four parameters. The newly synthesized tetra hybrid reinforced HAMCs have shown superior physicomechanical properties compared to pure Al, and single as well as double reinforced HAMCs. Therefore, it is anticipated that the newly developed tetra hybrid reinforced AMC material will be utilized in heavy-duty, aerospace, medical, automotive, marine, and other applications.

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Section: Introductionmentioning

confidence: 99%

Multi-response optimization of process and reinforcement parameters of hybrid reinforced Al matrix composites using Taguchi- Grey relational analysis

et al. 2022

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“…It is worthy of noting that stir casting is widely regarded as the method of fabrication for these hybrid composites. Pradeep Kumar and Robinson Smart 7 fabricated LM13 aluminium alloy based MMC reinforced with SiC and Gr. With stir casting as the fabrication technique, the microstructural analysis confirmed that the distribution of reinforcements is homogeneous.…”

Section: Introductionmentioning

confidence: 99%

“…Though rise in concentrations of SiC and Gr improved the wear resistance, the elevated SiC levels also contributed to increase in coefficient of friction. Pradeep Kumar and Robinson Smart 7 conducted wear tests on LM13/SiC/Gr hybrid composites using a pin-on-disc setup. They noticed that a protective layer formed by SiC and Gr in the interface of pin and disc is instrumental in wear rate reduction.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the two body abrasive wear of AA6061-SiC-Gr nano and hybrid nanocomposites

Lagisetti

Reddy

Krishna

2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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Aluminium based hybrid nanocomposites can be employed in many applications owing to their desirable traits. Depending on the constituents of the hybrid metal matrix composites, they must be tested for their wear performance since there is a high chance that these materials will experience rapid wear. Determining the tribological behaviour of AA6061/ 2 wt. % SiCp nanocomposite and AA6061/2wt. % SiCp/2 wt. % graphite hybrid nanocomposite is the prime objective of this study. With AA6061 as the metal matrix and nano sized silicon carbide, graphite particles as primary and secondary reinforcements respectively, all the composite samples have been fabricated using ultrasonic assisted stir casting. Evaluation of the wear behaviour of the aforementioned materials is done using the two body abrasive wear tests conducted on a pin-on-disc apparatus. Wear coefficients and friction coefficients have been computed and were also analyzed with respect to various parameters. Additionally, wear mechanisms involved were deciphered and subsequently, wear maps have been developed for all the samples. The sample consisting 2 wt. % SiC and 2 wt. % graphite was found to have excellent wear resistance among all. Additionally, coefficient of friction was the lowest for the aforementioned sample itself.

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“…The conventional methods to prepare HMMCs include mechanical alloying [8], powder metallurgy [9], stir casting [10], and infiltration routes with or without pressure [11]. With the fast development of science and technology, many novel processing methods for HMMCs have been developed, such as the precursor infiltration and pyrolysis method [12], chemical vapor deposition [13], electrical discharge machining [14] and in situ reactive infiltration [7].…”

Section: Introductionmentioning

confidence: 99%

Characterization of (B4C+Ti) Hybrid Reinforced Mg and AZ91D Composites

et al. 2022

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Ceramic hybrid particulate reinforced magnesium matrix composites have attracted much attention in recent years, owing to their light weight, high specific strength and stiffness, excellent wear and damping properties, and have very wide popularization and application prospects in the automotive and aerospace fields. A simple and novel technique, in situ reactive infiltration technique, was utilized to prepare (B4C+Ti) hybrid reinforced Mg and AZ91D composites. The microstructure, produced phases, wear, compression and bending performance were characterized and analyzed in depth. The results showed that extending the holding time for preparing the composites and magnesium alloy as the matrix were both beneficial for the generation of interpenetrating networks within the composites, which means more sufficient and complete in situ reactions between B4C and Ti particles. More sufficient and complete reactions facilitate stronger interfacial bonding, leading to an improvement of the wear, compression and bending performance of the composites. The wear mechanisms for both kinds of composites were abrasive and delamination wear. (B4C+Ti)/AZ91D composites exhibit better compression performance and this can be attributed to the microstructure of the composites and work-hardening and softening during compression.

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Mechanical and wear characterization of LM13/SiC/Gr dispersed hybrid composites formed through stir casting

Cited by 3 publications

References 10 publications

Multi-response optimization of process and reinforcement parameters of hybrid reinforced Al matrix composites using Taguchi- Grey relational analysis

Multi-response optimization of process and reinforcement parameters of hybrid reinforced Al matrix composites using Taguchi- Grey relational analysis

Experimental investigation on the two body abrasive wear of AA6061-SiC-Gr nano and hybrid nanocomposites

Characterization of (B4C+Ti) Hybrid Reinforced Mg and AZ91D Composites

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