Mechanically strong, stiff, and yet ductile AlSi7Mg/graphene composites by laser metal deposition additive manufacturing

Xupeng Li; Rui Cai; Qingshi Meng

doi:10.1016/j.msea.2021.141749

Mechanically strong, stiff, and yet ductile AlSi7Mg/graphene composites by laser metal deposition additive manufacturing

Xupeng Li, Rui Cai, Qingshi Meng

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Abstract

Laser metal deposition (LMD) with a coaxial powder feeding technology has been applied to fabricate pure aluminum alloy (AlSi7Mg) and low oxidation graphene aluminum matrix (LOG-Al) composites with low oxidation graphene (LOG) contents of 0.05wt. % and 0.1wt. % after the powder was prepared by wet ball milling. The LOG-Al composites showed improvements in all properties including hardness, tensile strength, ductility, modulus of elasticity and yield strength with the increase of LOG addition contents. The microstructures and fracture surfaces of the composites were observed and the results of TEM, HRTEM, optical microscope, EBSD, XRD spectra, Raman spectra, Vickers hardness, tensile properties were analyzed. The effects of wet ball milling, the addition of low oxidation graphene and its contents and LMD process on microstructure formation and resulting mechanical properties were discussed.

Original language	English
Article number	141749
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	823
Early online date	21 Jul 2021
DOIs	https://doi.org/10.1016/j.msea.2021.141749
Publication status	Published - 17 Aug 2021

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Properties, Microstructure and Processing. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Properties, Microstructure and Processing, 823, (2021) DOI: 10.1016/j.msea.2021.141749

© 2021, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Funder

This work was financially supported by the Open Fund of Key Laboratory of Fundamental Science for Aeronautical Digital Manufacturing Process of Shenyang Aerospace University ( SHSYS201905 ) and the plan of rejuvenating the Talents of Liaoning Province, China ( XLYC1907135 ).

Keywords

Additive manufacturing (AM)
Aluminum matrix composites (AMCs)
Graphene oxide
Laser metal deposition (LMD)

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Materials Science(all)

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10.1016/j.msea.2021.141749

Post-PrintAccepted author manuscript, 2.13 MBLicence: CC BY-NC-ND

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title = "Mechanically strong, stiff, and yet ductile AlSi7Mg/graphene composites by laser metal deposition additive manufacturing",

abstract = "Laser metal deposition (LMD) with a coaxial powder feeding technology has been applied to fabricate pure aluminum alloy (AlSi7Mg) and low oxidation graphene aluminum matrix (LOG-Al) composites with low oxidation graphene (LOG) contents of 0.05wt. % and 0.1wt. % after the powder was prepared by wet ball milling. The LOG-Al composites showed improvements in all properties including hardness, tensile strength, ductility, modulus of elasticity and yield strength with the increase of LOG addition contents. The microstructures and fracture surfaces of the composites were observed and the results of TEM, HRTEM, optical microscope, EBSD, XRD spectra, Raman spectra, Vickers hardness, tensile properties were analyzed. The effects of wet ball milling, the addition of low oxidation graphene and its contents and LMD process on microstructure formation and resulting mechanical properties were discussed. ",

keywords = "Additive manufacturing (AM), Aluminum matrix composites (AMCs), Graphene oxide, Laser metal deposition (LMD)",

author = "Xupeng Li and Rui Cai and Qingshi Meng",

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AU - Li, Xupeng

AU - Cai, Rui

AU - Meng, Qingshi

N1 - NOTICE: this is the author’s version of a work that was accepted for publication in Properties, Microstructure and Processing. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Properties, Microstructure and Processing, 823, (2021) DOI: 10.1016/j.msea.2021.141749 © 2021, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

PY - 2021/8/17

Y1 - 2021/8/17

N2 - Laser metal deposition (LMD) with a coaxial powder feeding technology has been applied to fabricate pure aluminum alloy (AlSi7Mg) and low oxidation graphene aluminum matrix (LOG-Al) composites with low oxidation graphene (LOG) contents of 0.05wt. % and 0.1wt. % after the powder was prepared by wet ball milling. The LOG-Al composites showed improvements in all properties including hardness, tensile strength, ductility, modulus of elasticity and yield strength with the increase of LOG addition contents. The microstructures and fracture surfaces of the composites were observed and the results of TEM, HRTEM, optical microscope, EBSD, XRD spectra, Raman spectra, Vickers hardness, tensile properties were analyzed. The effects of wet ball milling, the addition of low oxidation graphene and its contents and LMD process on microstructure formation and resulting mechanical properties were discussed.

AB - Laser metal deposition (LMD) with a coaxial powder feeding technology has been applied to fabricate pure aluminum alloy (AlSi7Mg) and low oxidation graphene aluminum matrix (LOG-Al) composites with low oxidation graphene (LOG) contents of 0.05wt. % and 0.1wt. % after the powder was prepared by wet ball milling. The LOG-Al composites showed improvements in all properties including hardness, tensile strength, ductility, modulus of elasticity and yield strength with the increase of LOG addition contents. The microstructures and fracture surfaces of the composites were observed and the results of TEM, HRTEM, optical microscope, EBSD, XRD spectra, Raman spectra, Vickers hardness, tensile properties were analyzed. The effects of wet ball milling, the addition of low oxidation graphene and its contents and LMD process on microstructure formation and resulting mechanical properties were discussed.

KW - Additive manufacturing (AM)

KW - Aluminum matrix composites (AMCs)

KW - Graphene oxide

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M3 - Article

VL - 823

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

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Mechanically strong, stiff, and yet ductile AlSi7Mg/graphene composites by laser metal deposition additive manufacturing

Abstract

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Keywords

ASJC Scopus subject areas

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