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CNT-reinforced AlSi10Mg composite by selective laser melting: microstructural and mechanical properties
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Number of Authors: 72019 (English)In: Materials Science and Technology, ISSN 0267-0836, E-ISSN 1743-2847, Vol. 35, no 9, p. 1038-1045Article in journal (Refereed) Published
Abstract [en]

Carbon nanotube (CNT)-AlSi10Mg composites were fabricated by selective laser melting (SLM). The influence of CNTs on the density, microstructure, and strength of SLM CNT-AlSi10Mg composites was investigated. The addition of CNTs over 0.1 wt-% significantly damaged the density due to the high surface energy of the CNTs. The network Si eutectic had no significant difference in either the SLM AlSi10Mg alloy or the CNT-AlSi10Mg composite. Reserved CNTs with a short scale were observed in the SLM CNT(0.5 wt-%)-AlSi10Mg composite. The ultimate tensile strength of the 0.05 wt-% CNT-AlSi10Mg composite was 441.2 +/- 0.9 MPa, which was higher than that of AlSi10Mg alloy. The grain boundary strengthening played an important role in the reinforcement of CNT-AlSi10Mg composite because of the refined grain.

Place, publisher, year, edition, pages
2019. Vol. 35, no 9, p. 1038-1045
Keywords [en]
Aluminium alloy, carbon nanotubes, selective laser melting, grain boundary strengthening, strength
National Category
Materials Engineering Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-169121DOI: 10.1080/02670836.2019.1603899ISI: 000465944000001OAI: oai:DiVA.org:su-169121DiVA, id: diva2:1319915
Available from: 2019-06-03 Created: 2019-06-03 Last updated: 2019-06-03Bibliographically approved

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Shen, Zhijian
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Department of Materials and Environmental Chemistry (MMK)
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