Microstructural characterization of Mg-SiC nanocomposite synthesized by high energy ball milling

Kamrani, Sepideh; Penther, Daniela; Ghasemi, Alireza; Riedel, Ralf; Fleck, Claudia

doi:10.1016/j.apt.2018.04.009

Cited by 32 publications

(16 citation statements)

References 31 publications

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“…The ultrafine Mg structure was achieved and remained due to the mechanical milling and pinning effect of the SiC nanoparticles, respectively, as observed in our previous work [17]. (ii) The strong interfacial bonding between the Mg and SiC particles due to well-bonded and clean matrix reinforcement interfaces, formed during the mechanical milling process [18], allow effective load transfer from the Mg matrix to the SiC nanoparticles, leading to the improved strength. (iii) The presence and reasonable distribution of the high volume fraction of SiC nanoparticles in the Mg matrix provide strengthening in the milled nanocomposite due to Orowan strengthening.…”

Section: Discussionmentioning

confidence: 62%

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Enhanced Strength and Ductility in Magnesium Matrix Composites Reinforced by a High Volume Fraction of Nano- and Submicron-Sized SiC Particles Produced by Mechanical Milling and Hot Extrusion

et al. 2019

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In the present study, Mg nanocomposites with a high volume fraction (10 vol %) of SiC particles were fabricated by two approaches: mechanical milling and mixing, followed by the powder consolidation steps, including isostatic cold pressing, sintering, and extrusion. A uniform distribution of the high content SiC particles in a fully dense Mg matrix with ultrafine microstructure was successfully achieved in the mechanically milled composites. The effect of nano- and submicron-sized SiC particles on the microstructure and mechanical properties of the nanocomposites was evaluated. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectrometer (EDS), and X-ray diffractometry (XRD) were used to characterize microstructures of the milled and mixed composites. Mechanical behavior of the Mg composites was studied under nanoindentation and compressive loading to understand the effects the microstructural modification on the strength and ductility of the Mg/SiC composites. The mechanical properties of the composites showed a significant difference regarding the size and distribution of SiC particles in the Mg matrix. The enhanced strength and superior ductility achieved in the mechanically milled Mg composites are mainly ascribed to the effective load transfer between matrix and SiC particles, grain refinement of the matrix, and strengthening effects of the nano- and submicron-sized SiC particles.

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Section: Discussionmentioning

confidence: 62%

“…Mg nanocomposites were processed according to the protocols described in detail previously [17,18,19]. In a nutshell, Mg powder with an average particle size of −325 mesh and nano- and submicron-sized SiC particles with an average particle size of 50 nm and ˂1 µm, respectively, (both Alfa Aesar, Ward Hill, MA, USA) were used.…”

Section: Methodsmentioning

confidence: 99%

Enhanced Strength and Ductility in Magnesium Matrix Composites Reinforced by a High Volume Fraction of Nano- and Submicron-Sized SiC Particles Produced by Mechanical Milling and Hot Extrusion

et al. 2019

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“…They obtained the crystallite size in the Mg matrix from XRD peak broadening. As a result of this study, they showed that crystallite size decreased with increasing alloying time and SiC amount [6].…”

Section: Introductionmentioning

confidence: 55%

“…Figure 4 shows the crystallite size of the samples using the data obtained from the XRD graph. Crystallite dimensions were calculated using Scherrer equation (equation 1) [6]. When Figure 4 is examined, it is seen that crystallite size decreases with the Cu amount from 0% to 3% by weight in the powder composition and the crystallite size does not change after 3%.…”

Section: Methodsmentioning

confidence: 99%

The effect of ball milling on crystallite size

Şahin¹,

Erturun²

2020

acperpro

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Homogeneous mixing of Al, varying amounts of Cu, Mg and Zn metal powders and SiC ceramic powders and mechanical alloys of metal powders by using high energy ball milling were carried out in the Retsch MM400 model mixer device, which performs movement in a spex manner. After this process, X-ray diffraction (XRD) was applied to the powdered mixtures. With the data obtained from XRD graphics; The crystallite size was calculated using the Scherrer equation, and the lattice stresses were calculated using the Williamson-Hall equation and comparisons between these two data were made. It was observed that the amount of Cu by weight, both the crystallite size, did not make a notable change for this property. Then, powder mixtures were sintered in hot isostatic press in argon atmosphere, which is a shielding gas, and turned into samples. These samples were polished and scanning electron microscopy (SEM) images were taken.

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“…Moreover, how mechanical energy is transformed into chemical energy is a question that remains unclear [4,24]. Most published works pay very little attention to the effect of milling conditions on the resulting products and a large number of published papers lack a detailed description of the experimental conditions employed, thereby making very difficult the reproduction of results from lab to lab or its scale up [25][26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Unveiling mechanochemistry: Kinematic-kinetic approach for the prediction of mechanically induced reactions

Gil‐González

Rodríguez-Laguna

Jiménez

et al. 2021

Journal of Alloys and Compounds

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Mechanochemistry has attracted a lot of attention over the last few decades with a rapid growth in the number of publications due to its unique features. However, very little is known about how mechanical energy is converted into chemical energy. Most of the published works using mechanochemistry neglect the required attention to the experimental parameters and their effect over the resulting products, what makes extremely difficult to reproduce the results from lab to lab. Moreover, if it is taken into consideration the broad range of experimental conditions used in different studies, it is quite difficult to compare results and set optimum conditions. As a result, mechanochemistry is generally viewed as a "black box". The aim of this work is to provide some insight into mechanochemistry. Thus, a simple kinematic-kinetic approach that allows the full parametrization of mechanically induced reactions is proposed. In an analogous way to thermally activated process, it is shown that kinetic modeling can serve to parametrize and model mechanically induced reactions as a function of the milling parameters with great reliability, thereby gaining prediction capability. As a way of example, this methodology has been applied for the first time to the mechanochemical reaction of Co and Sb to form CoSb3, a skutterudite-type thermoelectric material. Moreover, the universality of this methodology has also been validated with data from the literature. A key feature of the proposed kinematickinetic approach is that it can be extrapolated to other mechanically induced reactions, either inorganic or organic.

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Microstructural characterization of Mg-SiC nanocomposite synthesized by high energy ball milling

Cited by 32 publications

References 31 publications

Enhanced Strength and Ductility in Magnesium Matrix Composites Reinforced by a High Volume Fraction of Nano- and Submicron-Sized SiC Particles Produced by Mechanical Milling and Hot Extrusion

Enhanced Strength and Ductility in Magnesium Matrix Composites Reinforced by a High Volume Fraction of Nano- and Submicron-Sized SiC Particles Produced by Mechanical Milling and Hot Extrusion

The effect of ball milling on crystallite size

Unveiling mechanochemistry: Kinematic-kinetic approach for the prediction of mechanically induced reactions

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