Development of AZ91D magnesium alloy-graphene nanoplatelets composites using thixomolding process

Chen, Liwen; Zhao, Yuhong; Hou, Hua; Zhang, Ting; Liang, Jing; Li, Muxi; Li, Jing

doi:10.1016/j.jallcom.2018.11.148

Cited by 83 publications

(32 citation statements)

References 35 publications

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“…Many different production methods such as casting, 30 powder metallurgy, 31 friction stir, 32 wire electric discharge machining, 33 thixomolding, 34 or in-situ process 35 , 36 have been used to reinforcing the nanomaterials to magnesium alloys. Therefore, the most preferred technique is powder metallurgy (PM), undoubtedly.…”

Section: Introductionmentioning

confidence: 99%

The effect of graphene nano-sheet (GNS) weight percentage on mechanical and corrosion properties of AZ61 and AZ91 based magnesium matrix composites

Güler

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Dikici

2020

Journal of Composite Materials

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In this study, the effect of graphene nano-sheets (GNSs) on mechanical and corrosion properties of AZ61 and AZ91 based composites was investigated, detail. GNSs have been successfully produced by the liquid phase exfoliation (LPE) method and then, added AZ61 and AZ91 matrix with 01, 0.2, and 0.5 wt% GNSs for the production of the composites. The composite compacts were produced by powder metallurgy technique and sintered for 2 h at 500 °C under Ar atmosphere. The composite characterizations were carried out by scanning and transmission electron microscopes (SEM, TEM), electron dispersive spectroscope (EDS), Raman spectroscopy, and X-ray diffraction. The mechanical properties and corrosion behaviors of the composites have been compared with compression tests and potentiodynamic scanning (PDS) techniques, respectively. The results showed that the compressive strength of the composites increased with increasing GNS amount in both the AZ61 and AZ91 matrix alloys. The most susceptible composites to corrosion for both AZ61 and AZ91 matrix were observed in the 0.5 wt% GNS containing structures. However, there is a certain ratio of GNS in the Mg matrix to achieve good corrosion resistance.

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Section: Introductionmentioning

confidence: 99%

The effect of graphene nano-sheet (GNS) weight percentage on mechanical and corrosion properties of AZ61 and AZ91 based magnesium matrix composites

Güler

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Dikici

2020

Journal of Composite Materials

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“…Moreover, the high specific surface area and modulus of graphene have been reported in theoretical and experimental studies [14,15,16,17,18,19,20]. Hereby, graphene has been used in some metal matrix composites, such as aluminum [21,22] and magnesium [23,24] matrix composites, as a suitable reinforcement. Graphene has a higher specific surface area compared to CNT and, consequently, the contact area of graphene with the matrix is reasonably larger than that of CNT at the same mass fraction.…”

Section: Introductionmentioning

confidence: 99%

Effect of Graphene Nanosheets Content on Microstructure and Mechanical Properties of Titanium Matrix Composite Produced by Cold Pressing and Sintering

et al. 2018

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The effect of graphene nanosheet (GNS) reinforcement on the microstructure and mechanical properties of the titanium matrix composite has been discussed. For this purpose, composites with various GNS contents were prepared by cold pressing and sintering at various time periods. Density calculation by Archimedes’ principle revealed that Ti/GNSs composites with reasonable high density (more than 99.5% of theoretical density) were produced after sintering for 5 h. Microstructural analysis by X-ray diffraction (XRD) and a field emission scanning electron microscope (FESEM) showed that TiC particles were formed in the matrix during the sintering process as a result of a titanium reaction with carbon. Higher GNS content as well as sintering time resulted in an increase in TiC particle size and volume fraction. Microhardness and shear punch tests demonstrated considerable improvement of the specimens’ mechanical properties with the increment of sintering time and GNS content up to 1 wt. %. The microhardness and shear strength of 1 wt. % GNS composites were enhanced from 316 HV and 610 MPa to 613 HV and 754 MPa, respectively, when composites sintered for 5 h. It is worth mentioning that the formation of the agglomerates of unreacted GNSs in 1.5 wt. % GNS composites resulted in a dramatic decrease in mechanical properties.

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“…For the first time, in 2019, AZ91D Mg alloy-GNPs nanocomposites were produced via a thixomolding process (Figure 17) by Chen et al [186]. They revealed that there was a strong interface between AZ91 and GNPs, and that GNPs were well-dispersed in the Mg matrix.…”

Section: Metal Matrix Nanocomposites Reinforced By Graphenementioning

confidence: 99%

“…The schematic diagram for the preparation of GNPs–AZ91D magnesium alloy [186] (Copyright Elsevier, 2019, Journal of Alloys and Compounds).…”

Section: Figurementioning

confidence: 99%

An Overview of the Recent Developments in Metal Matrix Nanocomposites Reinforced by Graphene

2019

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Two-dimensional graphene plateletes with unique mechanical, electrical and thermo-physical properties could attract more attention for their employed as reinforcements in the production of new metal matrix nanocomposites (MMNCs), due to superior characteristics, such as being lightweight, high strength and high performance. Over the last years, due to the rapid advances of nanotechnology, increasing demand for the development of advanced MMNCs for various applications, such as structural engineering and functional device applications, has been generated. The purpose of this work is to review recent research into the development in the powder-based production, property characterization and application of magnesium, aluminum, copper, nickel, titanium and iron matrix nanocomposites reinforced with graphene. These include a comparison between the properties of graphene and another well-known carbonaceous reinforcement (carbon nanotube), following by powder-based processing strategies of MMNCs above, their mechanical and tribological properties and their electrical and thermal conductivities. The effects of graphene distribution in the metal matrices and the types of interfacial bonding are also discussed. Fundamentals and the structure–property relationship of such novel nanocomposites have also been discussed and reported.

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Development of AZ91D magnesium alloy-graphene nanoplatelets composites using thixomolding process

Cited by 83 publications

References 35 publications

The effect of graphene nano-sheet (GNS) weight percentage on mechanical and corrosion properties of AZ61 and AZ91 based magnesium matrix composites

The effect of graphene nano-sheet (GNS) weight percentage on mechanical and corrosion properties of AZ61 and AZ91 based magnesium matrix composites

Effect of Graphene Nanosheets Content on Microstructure and Mechanical Properties of Titanium Matrix Composite Produced by Cold Pressing and Sintering

An Overview of the Recent Developments in Metal Matrix Nanocomposites Reinforced by Graphene

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