Mechanical properties of submicrocrystalline aluminium matrix composites reinforced by “in situ” graphene through severe plastic deformation processes

Бродова, И. Г.; Петрова, А. Н.; Ширинкина, И. Г.; Rasposienko, D. Yu.; Yolshina, L.A.; Muradymov, R. V.; Разоренов, С. В.; Шорохов, Е. В.

doi:10.1016/j.jallcom.2020.158387

Cited by 23 publications

(13 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to [13 -16], in-situ synthesis in a molten metal matrix layer under molten salts is an efficient technique for producing graphene-and diamond-reinforced aluminum matrix composites. Thus, the produced aluminum matrix composites containing 0.10 -0.13 % graphene exhibit enhanced mechanical properties both in the as-cast [17] and in the deformed state [18].…”

Section: Introductionmentioning

confidence: 96%

Structure formation and physical-mechanical properties of Al-Mg alloy with microadditions of graphene

et al. 2022

View full text Add to dashboard Cite

Composites based on Al-Mg alloy, reinforced with graphene nanofilms, were obtained by in situ synthesis under a layer of salt melt. Using SEM and HRTEM, the morphological and dimensional characteristics of the structural components of composites with different contents of graphene were studied. An experiment on dynamic compression of composites by the Kolsky method was carried out, dynamic properties were measured, and the evolution of a cast structure during high-speed deformation was considered. For the first time, the dynamic properties of composites under loading by plane shock waves have been determined. The dynamic properties of aluminum matrix composites are compared depending on the properties of the non-reinforced alloy.

show abstract

Section: Introductionmentioning

confidence: 96%

Structure formation and physical-mechanical properties of Al-Mg alloy with microadditions of graphene

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Unfortunately, the available experimental data about the correlation between the structure of composites and their mechanical strengths are insufficient, and the available results are rather contradictory [29]. Initial studies of the structure formation of in sit composites based on aluminum and graphene have demonstrated both the positive effect of graphene as a reinforcing agent of aluminum matrix composites with disperse structure and the absence of reinforcement in the coarse-grained state [30,31].…”

Section: Introductionmentioning

confidence: 99%

Effect of Grain Size on the Properties of Aluminum Matrix Composites with Graphene

Бродова

Yolshina²,

Разоренов³

et al. 2022

Metals

View full text Add to dashboard Cite

The structure and mechanical properties of composites consisting of a metal matrix based on aluminum and its alloys of different compositions (AA-3003 and AA-5154) and graphene synthes sized in situ under a layer of molten salts were investigated depending on the chemical composition and grain size of the matrix. Aluminum matrix composites of three compositions were studied in as-cast coarse-grained, deformed fine-grained (grain size < 1 mm), and deformed sub microcrystalline (grain size < 1 μm) states in order to compare the structural characteristics of composites with different grain sizes. The composites were subjected to deformation with a split Hopkinson (Kolsky) bar and to dynamic-channel angular pressing. The hardness and dynamic mechanical properties of the composites were measured at strain rates ε˙ from 1.8 − 4.7 × 103 to 1.6 − 2.4 × 105 s−1. It was found that grain refinement induced a sharp increase in the hardness of composites with various compositions (by a factor of 1.6–2.6). A correlation of the elastic-plastic properties of the aluminum matrix composites with the grain sizes and chemical compositions of the matrices was established. A transition from coarse-grained to sub microcrystalline structure was shown to improve the elastic-plastic properties on average by a factor of 1.5. It was proved that the reinforcing effect of graphene increased with the decreasing grain size of the matrix. Mechanisms of reinforcement of the aluminum matrix composites using graphene were proposed.

show abstract

“…The corrosion behavior of carbonaceous nanomaterial-reinforced aluminum matrix composites mainly depends on their microstructural features . Under different fabrication and preparation techniques, they exhibit significant differences in microstructure and properties. − Severe plastic deformation processing techniques, such as high-pressure torsion, equal channel angular pressing, accumulative roll bonding, and friction stir welding/processing, are usually used to enhance the strengthening efficiency of aluminum matrix composites. However, the corrosion behavior of composites processed by severe plastic deformation techniques remains unclear.…”

Section: Introductionmentioning

confidence: 99%

Homogeneously Dispersed Graphene Nanoplatelets as Long-Term Corrosion Inhibitors for Aluminum Matrix Composites

Xie

Meng

Mao

et al. 2021

ACS Appl. Mater. Interfaces

114

View full text Add to dashboard Cite

Deformation-driven metallurgy was implemented to prepare graphene nanoplatelet (GNP)-reinforced aluminum matrix composites with a time-dependent self-enhancement in corrosion resistance. Severe plastic deformation contributed to the sufficient brokenness, thinning, enfolding, and redispersion of GNPs, as well as grain refinement. The homogeneously dispersed GNPs showed a great corrosion inhibition mechanism in a chloride-containing environment, ascribed to the formation of a carbon-doped protective film via diffusion and chemical bonding between GNPs and the surface oxide film. Electrochemical and intergranular corrosion tests were conducted to show the enhancement of long-term corrosion resistance. First-principles calculations were performed to explore the high corrosion resistance of the carbon-doped protective film. The energy barriers of vacancy formation, Cl ingress, and charge transfer were synchronously enhanced with the addition of GNPs into aluminum matrix composites as long-term corrosion inhibitors.

show abstract

Mechanical properties of submicrocrystalline aluminium matrix composites reinforced by “in situ” graphene through severe plastic deformation processes

Cited by 23 publications

References 40 publications

Structure formation and physical-mechanical properties of Al-Mg alloy with microadditions of graphene

Structure formation and physical-mechanical properties of Al-Mg alloy with microadditions of graphene

Effect of Grain Size on the Properties of Aluminum Matrix Composites with Graphene

Homogeneously Dispersed Graphene Nanoplatelets as Long-Term Corrosion Inhibitors for Aluminum Matrix Composites

Contact Info

Product

Resources

About