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    Rights statement: This is the author’s version of a work that was accepted for publication in Journal of Manufacturing Processes. 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 Journal of Manufacturing Processes, 64, 2021 DOI: 10.1016/j.jmapro.2021.02.004

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Process parameter optimization for selective laser melting of Inconel 718 superalloy and the effects of subsequent heat treatment on the microstructural evolution and mechanical properties

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Process parameter optimization for selective laser melting of Inconel 718 superalloy and the effects of subsequent heat treatment on the microstructural evolution and mechanical properties. / Wang, W.; Wang, S.; Zhang, X. et al.
In: Journal of Manufacturing Processes, Vol. 64, 30.04.2021, p. 530-543.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Wang W, Wang S, Zhang X, Chen F, Xu Y, Tian Y. Process parameter optimization for selective laser melting of Inconel 718 superalloy and the effects of subsequent heat treatment on the microstructural evolution and mechanical properties. Journal of Manufacturing Processes. 2021 Apr 30;64:530-543. Epub 2021 Feb 19. doi: 10.1016/j.jmapro.2021.02.004

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@article{e8556728d08442ac973d7c1aa6b4718c,
title = "Process parameter optimization for selective laser melting of Inconel 718 superalloy and the effects of subsequent heat treatment on the microstructural evolution and mechanical properties",
abstract = "The Inconel 718 superalloy (IN718) was fabricated by selective laser melting (SLM) successfully in this work. The optimization of process parameters and effects of three heat treatment processes on the microstructures and mechanical properties of samples were also systematically investigated. The relationship equation between relative density (RD) of SLMed samples and energy density (ED) coupled by laser parameters was determined. After the solution aging (SA) heat treatment, a large amount of needle-like δ phases precipitated and the precipitation of ultrafine spherical γ'/γ” strengthening phases as well as complete recrystallization appeared after homogenization + solution aging (HSA) heat treatment. The overall performances of SLMed IN718 samples were improved significantly using the HSA treatment, with the increase of tensile strength from 946 MPa to 1570 MPa.",
keywords = "Heat treatment, Inconel 718 superalloy, Mechanical properties, Microstructural evolution, Selective laser melting",
author = "W. Wang and S. Wang and X. Zhang and F. Chen and Y. Xu and Y. Tian",
note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Journal of Manufacturing Processes. 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 Journal of Manufacturing Processes, 64, 2021 DOI: 10.1016/j.jmapro.2021.02.004",
year = "2021",
month = apr,
day = "30",
doi = "10.1016/j.jmapro.2021.02.004",
language = "English",
volume = "64",
pages = "530--543",
journal = "Journal of Manufacturing Processes",
issn = "1526-6125",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Process parameter optimization for selective laser melting of Inconel 718 superalloy and the effects of subsequent heat treatment on the microstructural evolution and mechanical properties

AU - Wang, W.

AU - Wang, S.

AU - Zhang, X.

AU - Chen, F.

AU - Xu, Y.

AU - Tian, Y.

N1 - This is the author’s version of a work that was accepted for publication in Journal of Manufacturing Processes. 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 Journal of Manufacturing Processes, 64, 2021 DOI: 10.1016/j.jmapro.2021.02.004

PY - 2021/4/30

Y1 - 2021/4/30

N2 - The Inconel 718 superalloy (IN718) was fabricated by selective laser melting (SLM) successfully in this work. The optimization of process parameters and effects of three heat treatment processes on the microstructures and mechanical properties of samples were also systematically investigated. The relationship equation between relative density (RD) of SLMed samples and energy density (ED) coupled by laser parameters was determined. After the solution aging (SA) heat treatment, a large amount of needle-like δ phases precipitated and the precipitation of ultrafine spherical γ'/γ” strengthening phases as well as complete recrystallization appeared after homogenization + solution aging (HSA) heat treatment. The overall performances of SLMed IN718 samples were improved significantly using the HSA treatment, with the increase of tensile strength from 946 MPa to 1570 MPa.

AB - The Inconel 718 superalloy (IN718) was fabricated by selective laser melting (SLM) successfully in this work. The optimization of process parameters and effects of three heat treatment processes on the microstructures and mechanical properties of samples were also systematically investigated. The relationship equation between relative density (RD) of SLMed samples and energy density (ED) coupled by laser parameters was determined. After the solution aging (SA) heat treatment, a large amount of needle-like δ phases precipitated and the precipitation of ultrafine spherical γ'/γ” strengthening phases as well as complete recrystallization appeared after homogenization + solution aging (HSA) heat treatment. The overall performances of SLMed IN718 samples were improved significantly using the HSA treatment, with the increase of tensile strength from 946 MPa to 1570 MPa.

KW - Heat treatment

KW - Inconel 718 superalloy

KW - Mechanical properties

KW - Microstructural evolution

KW - Selective laser melting

U2 - 10.1016/j.jmapro.2021.02.004

DO - 10.1016/j.jmapro.2021.02.004

M3 - Journal article

VL - 64

SP - 530

EP - 543

JO - Journal of Manufacturing Processes

JF - Journal of Manufacturing Processes

SN - 1526-6125

ER -