AlSi10Mg Nanocomposites Prepared by DMLS Using In-Situ CVD Growth of CNTs: Process Effects and Mechanical Characterization

Thompson, Patrick; Poveda, Ronald L.; Bezsonov, Igor Igorevich; Rossini, Matteo; Orthner, D.; Cobb, Kim Cullen; Iqbal, Zafar

doi:10.1007/978-3-319-95510-0_5

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…Table 4 shows the tensile properties of samples at room temperature. CNTs distributed in the matrix will form a strong interfacial bonding which helps in load transfer when under deformation and improve tensile strength [ 31 ]. The average tensile strength, yield strength, and elongation of SLMed AlSi10Mg are 439.2 MPa, 270.7 MPa, and 7.5% respectively.…”

Section: Resultsmentioning

confidence: 99%

Investigation on the Microstructure and Mechanical Properties of CNTs-AlSi10Mg Composites Fabricated by Selective Laser Melting

Luo

et al. 2021

Materials

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CNT-AlSi10Mg composites fabricated by SLM have drawn a lot attention in structural application due to its excellent strength, elasticity and thermal conductivities. A planetary ball milling method was used to prepare the carbon nanotube (CNT)-AlSi10Mg powders, and the CNT-AlSi10Mg composites were fabricated by selective laser melting (SLM). The density, microstructure and mechanical properties of CNT-AlSi10Mg composites were studied. The density of the test samples increased at first and then decreased with increasing scan speed. When the laser scan speed was 800 mm/s, the test sample exhibited the highest density. The hardness increased by approximately 26%, and the tensile strength increased by approximately 13% compared to those values exhibited by the unreinforced AlSi10Mg. The grains of CNT-AlSi10Mg composite are finer than that in the AlSi10Mg. The CNTs were distributed along the grain boundaries of AlSi10Mg. Some of the CNTs reacted with Al element and transformed into Al4C3 during SLM, while some of the CNTs still maintained their tubular structure. The combination of CNTs and Al4C3 has a significant improvement in mechanical properties of the composites through fine grain strengthening, second phase strengthening, and load transfer strengthening.

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Section: Resultsmentioning

confidence: 99%

Investigation on the Microstructure and Mechanical Properties of CNTs-AlSi10Mg Composites Fabricated by Selective Laser Melting

Luo

et al. 2021

Materials

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“…In contrast, Thompson et al [171] have reported a significant decrease in the tensile properties of CNT-reinforced AlSi10Mg composites. They found that the inclusion of CNTs led to a 13.3% reduction in yield strength, a 10.5% decrease in ultimate tensile strength, and a 4.9% decline in elastic modulus.…”

Section: Tensile Strengthmentioning

confidence: 85%

Advancements in Laser Powder Bed Fusion of Carbon Nanotubes-Reinforced AlSi10Mg Alloy: A Comprehensive Analysis of Microstructure Evolution, Properties, and Future Prospects

Abedi,

Moskovskikh,

Nepapushev

et al. 2023

Metals

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Laser powder bed fusion (L-PBF) stands out as a promising approach within the realm of additive manufacturing, particularly for the synthesis of CNT-AlSi10Mg nanocomposites. This review delves into a thorough exploration of the transformation in microstructure, the impact of processing variables, and the physico-mechanical characteristics of CNT-AlSi10Mg nanocomposites crafted via the L-PBF technique. Moreover, it consolidates a substantial corpus of recent research, proffering invaluable insights into optimizing L-PBF parameters to attain the desired microstructures and enhanced properties. The review centers its attention on pivotal facets, including the dispersion and distribution of CNTs, the formation of porosity, and their subsequent influence on wear resistance, electrical and thermal conductivity, tensile strength, thermal expansion, and hardness. In line with a logical progression, this review paper endeavors to illuminate the chemical composition, traits, and phase configuration of AlSi10Mg-based parts fabricated via L-PBF, juxtaposing them with their conventionally manufactured counterparts. Emphasis has been placed on elucidating the connection between the microstructural evolution of these nanocomposites and the resultant physico-mechanical properties. Quantitative data culled from the literature indicate that L-PBF-produced parts exhibit a microhardness of 151 HV, a relative density of 99.7%, an ultimate tensile strength of 70×103 mm3N.m, and a tensile strength of 756 MPa.

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AlSi10Mg Nanocomposites Prepared by DMLS Using In-Situ CVD Growth of CNTs: Process Effects and Mechanical Characterization

Cited by 2 publications

References 9 publications

Investigation on the Microstructure and Mechanical Properties of CNTs-AlSi10Mg Composites Fabricated by Selective Laser Melting

Investigation on the Microstructure and Mechanical Properties of CNTs-AlSi10Mg Composites Fabricated by Selective Laser Melting

Advancements in Laser Powder Bed Fusion of Carbon Nanotubes-Reinforced AlSi10Mg Alloy: A Comprehensive Analysis of Microstructure Evolution, Properties, and Future Prospects

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