Development and experimental investigation of mechanical properties of graphene-based aluminum 6061 alloys

Kumar, Nithin; Lokesh, K.; Kannantha, Vinayaka; Pai, Raghavendra; Hebbale, Ajit M.

doi:10.1016/j.matpr.2021.01.303

Cited by 13 publications

(2 citation statements)

References 1 publication

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“…These carbids were produced by reacting GNP with Cr in SS316L. As the GNP content is increased (> 0.5 wt.%), different intermetallic compounds formed in the matrix, as reported by other researchers [17][18][19]. As seen in SEM micrograph (Fig.…”

Section: Relative Density Phases and Morphology Of Compositessupporting

confidence: 61%

Enhanced Wear and Corrosion Performance of Stainless Steel 316L with Addition of Different Weight Percentages of GNP

Veeramallu,

Krishna

2024

CTP

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The present study reports on the significant improvement in the wear and corrosion resistance of SS316L by adding graphene nanoplatelets (GNP) of varying wt.% (0.25, 0.5, and 0.75), composites which were prepared by the pressureless sintering technique. The GNP addition can significantly improve the wear and corrosion resistance of SS316L. The wear and corrosion rates for the 0.5 wt.% GNP composite were reduced by 43% and 98%, respectively. The corrosion morphology showed that pitting corrosion was reduced by reinforcing 316L with 0.5 wt.% GNP. Moreover, the intergranular sites were more vulnerable to the corrosion medium when GNP was used at 0.75 wt.%. The worn surface morphology revealed that the tribofilm reduces the coefficient of friction and wear rate due to the lubricating nature of GNP. The presence of GNP was confirmed by Raman spectroscopy in terms of the tribofilm.

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Section: Relative Density Phases and Morphology Of Compositessupporting

confidence: 61%

Enhanced Wear and Corrosion Performance of Stainless Steel 316L with Addition of Different Weight Percentages of GNP

Veeramallu,

Krishna

2024

CTP

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“…%. Tensile strength of the composite improved with graphene addition while hardness decreased [10]. P Kumar and A Xavior, 2017 prepared AA6061 matrix nanocomposite reinforced with graphene with various wt.…”

Section: Introductionmentioning

confidence: 99%

An initial study on the impression creep behaviour of stir-cast GNP reinforced AA6061 composite (AMMC)

Khokhar

Khajuria

Bedi

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Impression creep testing technique is used to screen out creep behaviour of materials as it is relatively faster method, requires small volume of the specimen, and is relatively material non-invasive technique when compared to conventional uniaxial tensile creep test method. This technique also possesses the benefit of maintaining constant stress throughout the experiment because a flat cylindrical indenter is used to apply load on the specimen. Owing to commercial unavailability of the materials under development such as metal matrix composites (MMC), the impression creep testing approach for such materials becomes a best method. In present work, creep behaviour of stir-cast graphene nanoplatelets (GNP) reinforced AA6061 composite (AMMC) is studied by using impression creep tests. The AMMC was prepared by adding GNPs in AA6061 through stir casting process by melting the alloy up to 1073 K. The impression creep experimentation included stress levels of 140 MPa, 170 MPa, and 200 MPa at a temperature of 573 K, 603 K and 633 K. The tests were conducted at constant stress by varying the temperature and vice-versa in vacuum. Two distinct regions i.e., primary and secondary/steady-state were observed and minimum creep strain rate was obtained in steady-state region. Tertiary region was absent, since the load/stress applied was compressive. During the experiment, depth of indentation of 0.03 mm to 0.14 mm was produced in the specimen. The microstructure of the composite has been analyzed using optical microscope and scanning electron microscope (SEM) to correlate with impression creep behaviour of the studied materials.

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Challenges Faced in Processing of Composites

Lokesh,

Ramachandra,

Mayya

2023

Structural Composite Materials

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Development and experimental investigation of mechanical properties of graphene-based aluminum 6061 alloys

Cited by 13 publications

References 1 publication

Enhanced Wear and Corrosion Performance of Stainless Steel 316L with Addition of Different Weight Percentages of GNP

Enhanced Wear and Corrosion Performance of Stainless Steel 316L with Addition of Different Weight Percentages of GNP

An initial study on the impression creep behaviour of stir-cast GNP reinforced AA6061 composite (AMMC)

Challenges Faced in Processing of Composites

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