Mechanical properties and characterization of zirconium oxide (ZrO2) and coconut shell ash(CSA) reinforced aluminium (Al 6082) matrix hybrid composite

Kumar, K. Ravi; Pridhar, T.; Balaji, V.

doi:10.1016/j.jallcom.2018.06.177

Cited by 136 publications

(20 citation statements)

References 23 publications

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“…Finally, the volume of the specimen was measured. The experimental density of the specimen was estimated by dividing the measured volume by the measured mass [10]. The theoretical density of the composite was determined using the rule of mixture (0.95 * density of matrix+0.5 * density of reinforcement).…”

Section: Methodsmentioning

confidence: 99%

A novel approach for the production and characterisation of aluminium–alumina hybrid metal matrix composites

Thiraviam

Ravisankar

K³

et al. 2020

Mater. Res. Express

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In this study, aluminium-alumina hybrid metal matrix composites were developed using stir-squeeze casting with ultrasonic stirring. Scrap aluminium alloy wheels (SAAWs) were used as the matrix material, with 1, 2, and 3 wt% of nanosized alumina ((Al 2 O 3 ) n ) particles as well as 4, 5.5, and 7 wt% of microsized alumina ((Al 2 O 3 ) m ) particles as reinforcement components. An experimental study was conducted using the Taguchi method with an L9 orthogonal array, and the multiobjective optimisation based on ratio analysis technique was used for optimisation. The effects of different ratios of nanosized and microsized alumina particles as well as ultrasonic parameters, namely amplitude and pulse time, on the microstructure and mechanical properties were evaluated and compared. Pin-on-disc wear tests were conducted in the dry condition under uniform load to determine the influence of nanosized and microsized alumina on the wear behaviour. The results revealed that SAAWs reinforced with 1 wt% of nanosized alumina particles and 5.5 wt% of microsized alumina particles and having an amplitude of 100% and pulse on-time of 180 s exhibited lower porosity and metal loss (wear) as well as higher hardness, tensile strength, and compressive strength than other composites.

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Section: Methodsmentioning

confidence: 99%

A novel approach for the production and characterisation of aluminium–alumina hybrid metal matrix composites

Thiraviam

Ravisankar

K³

et al. 2020

Mater. Res. Express

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“…The chromium steel vial was sealed with Ar gas to avoid the oxidation of aluminium powder. Ball milling was performed in RESTECH 100 planetary ball mill to distribute the reinforcements uniformly throughout the matrix and to initiate the strain hardening in the powder particles [1,2,21]. The parameters adopted for an adequate ball milling process was shown in Table 2 [22].…”

Section: Raw Materialsmentioning

confidence: 99%

Effect of Sintering Mechanisms on the Mechanical Behaviour of SiC and Kaoline Reinforced Hybrid Aluminium Metal Matrix Composite Fabricated through Powder Metallurgy Technique

Venkatesh

Deoghare

2021

Silicon

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Hybrid metal matrix composites with naturally available and low-cost reinforcements made tremendous demand in the automobile industry to fabricate parts like Pistons, Automobile body and brake discs because of the superior properties of HMMC compared to monolithic Aluminium. Present work focusses on the fabrication of Al-10% SiC-4% Kaoline HMMC by using conventional sintering, Microwave sintering and Spark Plasma Sintering (SPS) techniques. To reveal the phase identi cation and the distribution of reinforcements, Fabricated composites were investigated by using XRD, SEM integrated with an EDS analyser. Tensile, Compression and hardness tests were performed as per ASTM standards to study the effect of sintering mechanisms on the fabricated HMMC specimens. Results reveal that an enhancement of 13.3 % in U.T.S and 11.7 % Compression strength was observed in the Spark Plasma Sintered HMMC when compared to conventional sintered composite specimens because of lesser sintering temperature, time and the absence of intermetallic compounds in the Spark Plasma Sintering process. The formation of the Al 2 Cu intermetallic compound was identi ed in the XRD pattern of conventionally sintered Al-10% SiC-4% Kaoline HMMC sample due to the high sintering time and temperature which leads to inadequate mechanical properties. The fractured surface of tensile specimens reveals the presence of cleavages on the conventionally sintered HMMC which conforms the brittle fracture, and the existence of dimples on the Microwave sintered and Spark Plasma Sintered samples which signify that the ductile mode of failure in HMMC samples. Out of the three sintering techniques, Spark Plasma Sintering exhibits superior mechanical properties and lesser porosity levels.

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“…Another study in the literature reported that the increase of hard reinforcement particles, in addition to increasing the hardness of the composites, caused an increase in the formation of dislocation, which prevents plastic deformation. It can be stated that the fluidity of the molten matrix, the density of the reinforcing particles, the rate of solidification and the distribution of the reinforcing particles are the main factors affecting the hardness of the composites (Ravi et al, 2018). As a result, it was observed that there was a significant increase in the hardness values of ZrO 2 reinforced composites compared to pure Al 2024 alloy.…”

Section: Effect Of Zro 2 Ratio On the Hardnessmentioning

confidence: 99%

Efecto de la cantidad de ZrO 2 sobre las propiedades mecánicas de los compuestos de aluminio reforzados con ZrO 2 producidos por la técnica de infiltración al vacío

Pul

2021

revmetal

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Este estudio tiene como objetivo demostrar el efecto de la cantidad de ZrO2 en los materiales compuestos reforzados con ZrO2 basados en la aleación de aluminio 2024 obtenidos mediante la técnica de infiltración al vacío, con escasa información en la bibliografía. Se utilizó el ZrO2 como elemento de refuerzo en proporciones de 5%, 10%, 15% y 20%. Después del proceso de fabricación, se midió la densidad de los materiales compuestos y se investigó su microestructura mediante microscopía óptica y microscopía electrónica de barrido (SEM). El estudio también se ocupó de la determinación de las propiedades mecánicas de los materiales compuestos obtenidos. Para ello, se realizaron mediciones de dureza y pruebas de resistencia a la rotura cruzada, así como pruebas de desgaste mediante abrasivo. El análisis de microestructura reveló que el elemento aditivo ZrO2 se distribuyó parcialmente de manera homogénea en la estructura compuesta y que la humectación entre Al 2024 y ZrO2 fue adecuada. El aumento de las cantidades de ZrO2 dio lugar a valores más altos de densidad, dureza y resistencia al desgaste. Sin embargo, la resistencia a la rotura cruzada disminuyó. En resumen, los resultados de este estudio revelaron que el refuerzo de ZrO2 mejoró las propiedades mecánicas de la aleación Al 2024.

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Mechanical properties and characterization of zirconium oxide (ZrO2) and coconut shell ash(CSA) reinforced aluminium (Al 6082) matrix hybrid composite

Cited by 136 publications

References 23 publications

A novel approach for the production and characterisation of aluminium–alumina hybrid metal matrix composites

A novel approach for the production and characterisation of aluminium–alumina hybrid metal matrix composites

Effect of Sintering Mechanisms on the Mechanical Behaviour of SiC and Kaoline Reinforced Hybrid Aluminium Metal Matrix Composite Fabricated through Powder Metallurgy Technique

Efecto de la cantidad de ZrO 2 sobre las propiedades mecánicas de los compuestos de aluminio reforzados con ZrO 2 producidos por la técnica de infiltración al vacío

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