Fabrication, Characterization and Mechanical Behaviour of A356/ Copper Particulate Reinforced Metallic Composites

Krishna, M. Gopi; Kumar, K. Praveen; Sri, M. Naga Swapna; Rao, J. Babu; Bhargava, N.R.M.R.

doi:10.1016/j.matpr.2017.11.444

Cited by 16 publications

(6 citation statements)

References 12 publications

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“…Four compositions, Al-10Zn, Al-10Zn +6wt%Cu, Al-10Zn +8wt%Cu, Al-10Zn +8wt%SiC were of interest in the present investigation. The selection of these compositions for the Cu reinforced Al-Zn based composites was informed by previous studies conducted on metallic reinforced AMCs, which showed that the 6 and 8 wt.% reinforcement compositions yielded the best processing outputs, while the unreinforced Al-Zn alloy and Al-Zn composition reinforced with 8 wt.% SiC, served as control compositions [11,12,22,24,25]. In order to achieve the composite compositions, charge calculation and composite development procedures in accordance with Alaneme et al [25] were adopted in the study.…”

Section: Composite Productionmentioning

confidence: 99%

“…This indicates that the substitution of SiC with same wt.% Cu as reinforcement does not results in adverse reduction in hardness of the Al-Zn composites. The mechanism of hardening on account of increase in the wt.% Cu can be linked to increase in particle hardening effect, considering that Cu is harder than Al-Zn alloy [14,22]. Furthermore, increase in both direct and indirect strengthening due to both load transfer phenomenon and dislocation generated due to difference in thermal coefficient of expansion during solidification, have been mentioned in literature to be contributory factors to improved hardening in particle reinforced composites [12,35].…”

Section: Mechanical Properties 331 Hardness Propertiesmentioning

confidence: 99%

“…There are few studies available in literature where Cu has been considered as reinforcement in AMCs [21][22][23][24]. These studies were limited to studying essentially the influence of Cu addition on selected physical and mechanical properties of the Al-Cu based composites.…”

Section: Introductionmentioning

confidence: 99%

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Structural analysis, mechanical and damping behaviour of Al-Zn based composites reinforced with Cu and SiC particles

2022

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The structural characteristics, mechanical and damping properties of stir-cast Al-10 wt.% Zn based composites developed using 6 and 8 wt.% Cu, and 8 wt.% SiC particles as reinforcements, were investigated. The low porosity (<4%), near absence of dissolved Cu in the Al-Zn matrix, and marginal presence of melt reaction-induced intermetallic phases, attest to the soundness of the castings. Besides hardness, the strength parameters − ultimate tensile strength (149.33 MPa and 138.64 MPa) and specific strength (54.3 MPa cm3 g−1 and 51.16 MPa cm3 g−1) − of the Al-Zn composites reinforced with 6 and 8 wt.% Cu, were superior to that of the unreinforced Al-Zn alloy (103.47 MPa) and the 8 wt.% SiC reinforced composite (130.5 MPa). The fracture toughness (17.32 MPa m1/2 and 13.66 MPa m1/2) and percentage elongation (15% and 12.5%) of the 6 and 8 wt.% Cu reinforced Al-Zn composites, also surpassed that reinforced with SiC (KIC − 12.28 MPa m1/2; % εf − 9.5%). Improved matrix/particles interphase bonding and the inherent ductile and tough nature of Cu over SiC, were cited responsible for the improved strength-ductility-toughness balance of the Al-Zn/Cu composites over that reinforced with SiC. The damping properties were generally temperature sensitive, with all compositions exhibiting increase in damping capacity at test temperatures 100–200 °C.

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Section: Composite Productionmentioning

confidence: 99%

Section: Mechanical Properties 331 Hardness Propertiesmentioning

confidence: 99%

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Structural analysis, mechanical and damping behaviour of Al-Zn based composites reinforced with Cu and SiC particles

2022

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“…Gopi Krishna et al (2018) assessed the mechanical behaviour of stir cast 5-15 wt.% Cu powder reinforced A356 matrix composites. In the study, the potentially strong and continuous particle/matrix interface which can be harnessed with the use of metallic particles as reinforcement in metallic matrices was explored.…”

Section: Fathymentioning

confidence: 99%

Applicability of metallic reinforcements for mechanical performance enhancement in metal matrix composites: a review

Alaneme

Okotete

Fajemisin

et al. 2019

Arab Journal of Basic and Applied Sciences

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The growing application of metal matrix composites (MMCs) in structural and reliability critical applications has placed higher premium on good combinations of strength, ductility and toughness, in which ceramic reinforced MMCs currently face limitations. Metallic reinforcements have hence come under consideration as replacements of ceramics due to their good wettability and inherent ductility and toughness. This review covers the use of metallic reinforcements in Al, Mg, Cu and Zn-Al metal matrices and the mechanical behaviour of the developed composites. The performance advantages and some concerns with the use of these alternative reinforcements are also highlighted, and the future possibilities in optimizing mechanical performance of MMCs are posited in the paper.

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“…There have been some attempts to address this with the use of metallic materials as reinforcement (Alaneme et al, 2019b). The metallic materials (in form of particles or fibres) because they are inherently tougher and more ductile than ceramics, potentially help improve the shock resistance and formability of the composites (Fathy et al, 2015;Gopi Krishna et al, 2018). However, the effect their selection has on the high temperature mechanical properties and damping capacity of the AMCs, has not come under scientific scrutiny.…”

Section: Introductionmentioning

confidence: 99%

Comportamiento del flujo de esfuerzo y análisis microestructural de compuestos de matriz de aluminio deformados en caliente y reforzados con partículas de la aleación con memoria de forma CuZnAlNi

et al. 2020

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Se investigó el comportamiento del flujo de esfuerzo por compresión y las microestructuras de los compuestos de matriz de aleación de Al deformada en caliente (AMC) y reforzados con partículas de la aleación con memoria de forma (SMA) basadas en CuZnAlNi. La aleación base Al-Mg-Si reforzada con 4, 6 y 8% en peso de Cu-18Zn-7Al-0,3Ni, y 8% en peso de partículas de SiC, se obtuvieron mediante agitación doble y se sometieron a pruebas de compresión en caliente a una velocidad de deformación de 1,0 s−1, temperatura de 400 °C, y ~60% de deformación global constante, para ello se utilizó un simulador termo-mecánico Gleeble 3500. Las microestructuras iniciales y deformadas de los compuestos se examinaron utilizando microscopía óptica. El uso de partículas Cu-18Zn-7Al-0,3Ni como refuerzo dio como resultado el desarrollo de una estructura de matriz más fina en comparación con el SiC. La tensión de flujo y la dureza de los AMC reforzados con partículas de Cu-18Zn-7Al-0,3Ni fueron generalmente más altos que los de la aleación de Al no reforzada y la aleación de Al reforzada con SiC. También la tensión de flujo y, en gran medida, la dureza creció con el aumento en el porcentaje en peso de partículas de Cu-18Zn-7Al-0,3Ni en el AMC. La mejora observada con el uso de partículas de la aleación Cu-18Zn-7Al-0,3Ni se atribuyó a la combinación del refuerzo mejorado y el refinamiento del tamaño grano de la matriz, fortalecimiento la interface, el esfuerzo residual de compresión, la alta conductividad térmica, y la capacidad de amortiguación ofrecida por la aleación Cu-18Zn-7Al-0,3Ni.

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Fabrication, Characterization and Mechanical Behaviour of A356/ Copper Particulate Reinforced Metallic Composites

Cited by 16 publications

References 12 publications

Structural analysis, mechanical and damping behaviour of Al-Zn based composites reinforced with Cu and SiC particles

Structural analysis, mechanical and damping behaviour of Al-Zn based composites reinforced with Cu and SiC particles

Applicability of metallic reinforcements for mechanical performance enhancement in metal matrix composites: a review

Comportamiento del flujo de esfuerzo y análisis microestructural de compuestos de matriz de aluminio deformados en caliente y reforzados con partículas de la aleación con memoria de forma CuZnAlNi

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