Development of Novel AlSi10Mg Based Nanocomposites: Microstructure, Thermal and Mechanical Properties

Moheimani, Seyed Kiomars; Dadkhah, Mehran; Saboori, Abdollah

doi:10.3390/met9091000

Cited by 7 publications

(4 citation statements)

References 38 publications

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“…AlSi10Mg has been massively deployed in the aerospace, automotive and marine industries in recent years due to its high heat conductivity, low weight and outstanding mechanical properties [1][2][3]. However, the traditional forging or casting process still has limitations due to its time-consuming nature and low cost-effectiveness [4][5][6]. In the wake of technology developments, selective laser melting (SLM) gradually became a hot topic owing to its high free-forming and rapid prototyping ability [7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Laser Energy Density on Tribological Properties of AlSi10Mg Manufactured by Selective Laser Melting

Wang

2024

Materials

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In recent years, much work related to the performance of AlSi10Mg manufactured by selective laser melting (SLM) has been extensively researched. However, the study of tribological performance caused by different laser energy densities is still insufficient. This work concentrates on the relationship between the wear resistance and laser energy density of AlSi10Mg processed using SLM. Moreover, XRD characterization, density, surface roughness and microhardness were also examined since they are closely related to wear resistance. The results revealed that the XRD pattern of AlSi10Mg was mainly composed of the α-Al and Si phases under the conditions of different laser energy densities. In addition, the peak of Mg2Si was also detected. Also, the grain size increased with the increasing of laser energy density. The increase in laser energy density led to an increase in the convection and porous phenomenon in the molten pool. However, when the value was lower, the overlapping area reduced, and the strength between adjacent melting paths was insufficient, resulting in the declination of the sample property. According to the experimental results, a laser energy density of 63.33 J/mm3 was considered to be a relative optimal condition. The relative density, Ra, microhardness and wear volume were 99.2%, 8.86 μm, 128.3 HV0.2 and 2.96 × 10−2 mm3, respectively. The worn surface morphology also confirmed the influence of laser energy density on wear resistance. A regression model was established and analyzed, which showed the reliability of the results. Furthermore, the tribological mechanism was also revealed.

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Section: Introductionmentioning

confidence: 99%

Influence of Laser Energy Density on Tribological Properties of AlSi10Mg Manufactured by Selective Laser Melting

Wang

2024

Materials

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“…Tiwari et al [20,21] studied the interfacial bonding characteristics of graphene/AlSi10Mg composites and the new method of relatively uniform distribution of graphene. Shafaqat Siddique et al [22][23][24][25] studied the effects of graphene on microstructure, thermal properties, tensile properties and friction and wear properties of AlSi10Mg. The results show that the porous structure parts with excellent performance can be prepared by SLM technology with reasonable SLM process parameters and post-processing methods.…”

Section: Introductionmentioning

confidence: 99%

Effects of graphene on the mechanical properties of AlSi10Mg melted by SLM

Qiu

Chen

Zhang

2022

Materials Science and Technology

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Graphene(GNPs) aluminum matrix composites have been widely used in transportation, aerospace, energy and power fields due to their high strength, good wear resistance and small thermal expansion coefficient. In this paper, AlSi10Mg-(0,0.5,1.0,2.0,4.0wt.%)graphene composite powders were prepared by vacuum mechanical milling, and then high quality composites were fabricated by selective laser melting(SLM). The SLM process of the composites was optimized, the microstructure and mechanical properties of AlSi10Mg-(0,0.5,1.0,2.0,4.0wt.%) graphene composites were analyzed. The results of scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy(EDS) and X-ray diffraction(XRD) showed, with the addition of graphene, the microstructure and mechanical properties of the samples are greatly affected. This benign change in the microscopic level has brought the improvement of mechanical properties to the sample.

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“…Metal matrix composites (MMCs) are a class of materials that can be produced by adding one or more reinforcements to a metallic matrix [1,2]. Over the past years, MMCs could attract worldwide attention mainly owing to their unique properties as well as the possibility to tailor the properties of materials and consequently fulfil the criteria of the particular applications [3,4]. In fact, through the production of MMCs, it is possible to combine the ductile, tough and conductive characteristics of metals with wear resistance, stiffness, and rigidness of ceramic materials.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Overview on the Latest Progress in the Additive Manufacturing of Metal Matrix Composites: Potential, Challenges, and Feasible Solutions

Dadkhah

Mosallanejad

Iuliano

et al. 2021

Acta Metall. Sin. (Engl. Lett.)

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Nowadays, as an emerging technology, additive manufacturing (AM) has received numerous attentions from researchers around the world. The method comprises layer-by-layer manufacturing of products according to the 3D CAD models of the objects. Among other things, AM is capable of producing metal matrix composites (MMCs). Hence, plenty of works in the literature are dedicated to developing different types of MMCs through AM processes. Hence, this paper provides a comprehensive overview on the latest research that has been carried out on the development of the powder-based AM manufactured MMCs from a scientific and technological viewpoint, aimed at highlighting the opportunities and challenges of this innovative manufacturing process. For instance, it is documented that AM is not only able to resolve the reinforcement/matrix bonding issues usually faced with during conventional manufacturing of MMCs, but also it is capable of producing functionally graded composites and geometrically complex objects. Furthermore, it provides the opportunity for a uniform distribution of the reinforcing phase in the metallic matrix and is able to produce composites using refractory metals thanks to the local heat source employed in the method. Despite the aforementioned advantages, there are still some challenges needing more attention from the researchers. Rapid cooling nature of the process, significantly different coefficient of expansion of the matrix and reinforcement, processability, and the lack of suitable parameters and standards for the production of defect-free AM MMCs seem to be among the most important issues to deal with in future works.

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Development of Novel AlSi10Mg Based Nanocomposites: Microstructure, Thermal and Mechanical Properties

Cited by 7 publications

References 38 publications

Influence of Laser Energy Density on Tribological Properties of AlSi10Mg Manufactured by Selective Laser Melting

Influence of Laser Energy Density on Tribological Properties of AlSi10Mg Manufactured by Selective Laser Melting

Effects of graphene on the mechanical properties of AlSi10Mg melted by SLM

A Comprehensive Overview on the Latest Progress in the Additive Manufacturing of Metal Matrix Composites: Potential, Challenges, and Feasible Solutions

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