An Experimental Investigation on Hardness and ShearBehaviorofAluminum, Silicon Carbide, and GraphiteHybrid Composite with and without Cryogenic Treatment

Arunkumar, K.; Krishnappa, G.; Kasthurirengan, S.; Vinay, Patil

doi:10.1016/j.matpr.2017.11.165

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…The incorporation of reinforcements in a single, double and hybrid manner paved way in attaining higher engineering properties inside the composites [3]. Apart from single reinforced metal matrix composites, hybrid aluminium metal matrix composites are focussed deeply by many authors as they provoke and balance the tribological, mechanical property and corrosion property through the incorporation of various reinforcements like metal nitrides, carbides, borides and oxides [4][5][6]. As far as the mechanical and wear properties are concerned, many researchers substitute aluminium oxide as the reinforcing element in the Al 6061 hybrid composites due to their high mechanical strength, hard, wear resistance and high stiffness [3,7].…”

Section: Introductionmentioning

confidence: 99%

“…Graphite particles plays a vital role in the hybrid Al 6061 matrix composites, as they have the self lubricating property, brittle and hard materials. Many researchers used graphite as one of the reinforcements mainly because of their good hardness and wear resistance [16][17][18][19]. Lokesh et al developed a single reinforced Al 6061 matrix composites with 2%-8% graphite reinforcement.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing the mechanical, wear and corrosion behaviour of stir casted aluminium 6061 hybrid composites through the incorporation of boron nitride and aluminium oxide particles

Gopinath

Prince²,

Raghav³

2020

Mater. Res. Express

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This research paper portrays the enrichment of mechanical, wear and corrosion properties of the Aluminium 6061 matrix composite by incorporating hybrid reinforcements. Aluminium 6061 alloy is stir casted with different proportions of boron nitride (BN), Aluminium oxide (Al 2 O 3 ) and graphite particles. Tensile test reveals that the tensile strength and ductility for the Al 6061-30 BN -10Al 2 O 3 -5C is improved due to the presence of higher BN content along with 10% Al 2 O 3 . Significant improvement in microhardness (63HV), compressive strength (187 Pa) and impact strength (12 J) for the Al 6061-30 BN -10Al 2 O 3 -5C when compared with the bare Al 6061 alloy. The dispersion of BN with Al 2 O 3 improved the wear resistance for the Al 6061-30 BN -10 Al 2 O 3 -5 C composite, where as the unreinforced bare Al alloy has caused the major surface degradation resulting in poor wear property and the worn out surfaces are examined through the scanning electron microscope. The main wear mechanism is identified as adhesive wear. The corrosion test results clearly reveals that the corrosion resistance is higher for the Al 6061-30 BN -10Al 2 O 3 -5C (−0.526±0.004 V) with a lower current density of −0.983±0.004 μA cm −2 than the other composites and bare Al 6061.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancing the mechanical, wear and corrosion behaviour of stir casted aluminium 6061 hybrid composites through the incorporation of boron nitride and aluminium oxide particles

Gopinath

Prince²,

Raghav³

2020

Mater. Res. Express

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“…Examples include CdSe and FeO pigments, 4,5 ZnTe infrared optical semiconductors, 6 CdTe and CuS photovoltaic materials; 6,7 BeO having high thermal conductivity, 8 TiC having low thermal conductivity; 9 and TaC, SiC, and c-BN highhardness materials. [10][11][12] Given the long and exhaustive history of these AB compounds, it is natural to ask if there is anything else left to discover.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, key concepts in chemical bonding were first formulated in attempts to understand the factors, such as atomic size, coordination preference, and electron count, that affect their formation. − These compounds also have many applications arising from their varied optical, thermal, and mechanical properties. Examples include CdSe and FeO pigments, , ZnTe infrared optical semiconductors, CdTe and CuS photovoltaic materials, , BeO having high thermal conductivity, TiC having low thermal conductivity, and TaC, SiC, and c -BN high-hardness materials. − Given the long and exhaustive history of these AB compounds, it is natural to ask if there is anything else left to discover.…”

Section: Introductionmentioning

confidence: 99%

Searching for Missing Binary Equiatomic Phases: Complex Crystal Chemistry in the Hf−In System

et al. 2018

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There remain 21 systems (out of over 3500 possible combinations of the elements) in which the existence of the simple binary equiatomic phases AB has not been established experimentally. Among these, the presumed binary phase HfIn is predicted to adopt the tetragonal CuAu-type structure (space group P4/ mmm) by a recently developed machine-learning model and by structure optimization through global energy minimization. To test this prediction, the Hf-In system was investigated experimentally by reacting the elements in a 1:1 stoichiometry at 1070 K. Under the conditions investigated, the bulk and surface of the sample correspond to different crystalline phases but have nearly the same equiatomic composition, as revealed by energy-dispersive X-ray analysis. The structure of the bulk sample, which was solved from powder X-ray diffraction data through simulated annealing, corresponds to the γ-brass (CuZn) type (space group I4̅3 m) with Hf and In atoms disordered over four sites. The structure of crystals selected from the surface, which was solved using single-crystal X-ray diffraction data, corresponds to the CuPt type (space group Fm3̅ m) with Hf and In atoms partially disordered over three sites. The discrepancy between the predicted CuAu-type structure and the two experimentally refined crystal structures is reconciled through close inspection of structural relationships, which reveal that the γ-brass-type structure of the bulk HfIn phase is indeed derived through small distortions and defect formation within the CuAu-type structure.

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Cryogenic Treatment of Nimonic Alloy- Hard Turning: State -of-the-art, Challenges and Future Directions

Jadhav

Mohanty

Shirguppikar

2019

Materials Today: Proceedings

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An Experimental Investigation on Hardness and ShearBehaviorofAluminum, Silicon Carbide, and GraphiteHybrid Composite with and without Cryogenic Treatment

Cited by 4 publications

References 2 publications

Enhancing the mechanical, wear and corrosion behaviour of stir casted aluminium 6061 hybrid composites through the incorporation of boron nitride and aluminium oxide particles

Enhancing the mechanical, wear and corrosion behaviour of stir casted aluminium 6061 hybrid composites through the incorporation of boron nitride and aluminium oxide particles

Searching for Missing Binary Equiatomic Phases: Complex Crystal Chemistry in the Hf−In System

Cryogenic Treatment of Nimonic Alloy- Hard Turning: State -of-the-art, Challenges and Future Directions

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