Development of High Performance Magnesium Matrix Nanocomposites Using Nano-SiC Particulates as Reinforcement

Shen, Mingjie; Ying, W. F.; Wang, X. J.; Zhang, M. F.; Wu, Kun

doi:10.1007/s11665-015-1707-7

Cited by 30 publications

(8 citation statements)

References 31 publications

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“…Secondly, the mechanical strength of the reinforcement should be better than the matrix of the composite [13,30,[34][35][36]. It is possible to say that ceramic reinforcement elements such as Al 2 O 3 , SiC, and HA (hydroxyapatite) can meet these requirements [9,13,37,38].…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Erçetin

Pimenov

2021

Materials

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Powder metallurgy (PM) method is one of the most effective methods for the production of composite materials. However, there are obstacles that limit the production of magnesium matrix composites (MgMCs), which are in the category of biodegradable materials, by this method. During the weighing and mixing stages, risky situations can arise, such as the exposure of Mg powders to oxidation. Once this risk is eliminated, new MgMCs can be produced. In this study, a paraffin coating technique was applied to Mg powders and new MgMCs with superior mechanical and corrosion properties were produced using the hot pressing technique. The content of the composites consist of an Mg2Zn matrix alloy and Al2O3 particle reinforcements. After the debinding stage at 300 °C, the sintering process was carried out at 625 °C under 50 MPa pressure for 60 min. Before and after the immersion process in Hank’s solution, the surface morphology of the composite specimens was examined by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis. With the hot pressing technique, composite specimens with a very dense and homogeneous microstructure were obtained. While Al2O3 reinforcement improved the mechanical properties, it was effective in changing the corrosion properties up to a certain extent (2 wt.% Al2O3). The highest tensile strength value of approximately 191 MPa from the specimen with 8 wt.% Al2O3. The lowest weight loss and corrosion rate were obtained from the specimen containing 2 wt.% Al2O3 at approximately 9% and 2.5 mm/year, respectively. While the Mg(OH)2 structure in the microstructure formed a temporary film layer, the apatite structures containing Ca, P, and O exhibited a permanent behavior on the surface, and significantly improved the corrosion resistance.

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Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Erçetin

Pimenov

2021

Materials

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“…Simultaneously, it is imperative to emphasis that magnesium matrix composites with addition of micron-sized particulates, such as SiC particles [15], Al 2 O 3 particles [16], Y 2 O 3 particles [17], or metal particles, have the potential to improve thermal stability, yield strength, modulus, hardness, fatigue and wear resistance, as well as damping properties [18,19]. Whereas the sacrifice of the ductility due to the tremendous discrepancy of mechanical-physical properties between matrix and reinforcements [20,21], Ti could be considered as a favorable candidate for dispersion strengthening of Mg. Because both the Ti and Mg are closepacked hexagonal (HCP) crystal structure, which could make it possible to form the coherent lattice relationship at the Mg/Ti interface [19,22].…”

Section: Introductionmentioning

confidence: 99%

Microstructural evolution of AZ61-10at.%Ti composite powders during mechanical milling

Sun

et al. 2016

Materials & Design

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“…Their increased strength can mainly be attributed to the nanoparticles' enhanced load-bearing capacity, the greater density of dislocations resulting from the residual plastic strain due to differing thermal expansion coefficients between the matrix and reinforcing nanoparticles, and the Orowan pinning effect induced by the nano-sized particles [2]. Furthermore, nano-sized reinforcements have demonstrated the activation of non-basal slip systems within the Mg matrix at room temperature, along with aiding in grain refinement, resulting in improved ductility [3,4]. The substantial benefits have sparked notable research interest in utilizing sub-micronand nanoparticles to reinforce magnesium and its alloys in recent years.…”

Section: Introductionmentioning

confidence: 99%

Global and Local Deformation Analysis of Mg-SiC Nanocomposites: Digital Image Correlation (DIC) and Representative Volume Element (RVE) Techniques

Rahimi Mehr,

Kamrani,

Fleck

et al. 2023

J. Compos. Sci.

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Improving the ductile deformation behavior of Mg-SiC nanocomposites without compromising strength is critical to enhancing their mechanical properties. Mg-SiC nanocomposites are produced through mechanical milling, cold isostatic pressing, sintering, and hot extrusion processes. This study investigates the uniaxial stress–strain response and deformation behavior of the Mg-SiC nanocomposite compared to pure Mg samples with and without the milling process. The deformation behavior was investigated by two-dimensional (2D) digital image correlation (DIC) at two macroscopic and microscopic scales, employing light micrographs and in situ loading samples, respectively, in the scanning electron microscope. Compared to the pure Mg samples, the mechanical test results demonstrated a significant improvement in strength (80 MPa) and fracture strain (23.5%) of the Mg-SiC nanocomposite. The three-dimensional (3D) representative volume element (RVE) model revealed the particle dispersion effect on the mechanical properties of the nanocomposite. The RVE results demonstrate ductile deformation behavior in the sample with homogenous dispersion of SiC particles compared with the heterogeneous dispersion of SiC particles in Mg-SiC nanocomposite. The results demonstrated a good agreement between DIC and RVE predictions for Mg-SiC nanocomposites across macro- and microscales.

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Development of High Performance Magnesium Matrix Nanocomposites Using Nano-SiC Particulates as Reinforcement

Cited by 30 publications

References 31 publications

Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Microstructural evolution of AZ61-10at.%Ti composite powders during mechanical milling

Global and Local Deformation Analysis of Mg-SiC Nanocomposites: Digital Image Correlation (DIC) and Representative Volume Element (RVE) Techniques

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