Carbide formation in additive manufacturing of single-crystal superalloy René N5 processed through scanning laser epitaxy

Amrita Basak, Suman Das

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    Carbon is added to single-crystal nickel-base superalloys to reduce the formation of grain defects. Carbon and a carbide former drive precipitation of carbides at grain boundaries reducing grain boundary sliding. In this paper, carbide formation in nickel-base superalloy René N5 was studied using optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Samples of René N5 were fabricated using scanning laser epitaxy (SLE), a powder bed fusion-based additive manufacturing (AM) technique. The carbides formed in these alloys were mostly Chinese script-type carbides which formed discrete networks in the interdendritic region. In addition, blocky and elongated carbides were also observed. EDS analysis showed the carbides to be Ta rich. The findings also showed the presence of rhenium in the Chinese-script carbides. However, rhenium was not found in the blocky carbides.

    Original languageEnglish (US)
    Title of host publicationMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016
    PublisherAssociation for Iron and Steel Technology, AISTECH
    Pages51-58
    Number of pages8
    ISBN (Electronic)9781510833142
    StatePublished - Jan 1 2016
    EventMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016 - Salt Lake City, United States
    Duration: Oct 23 2016Oct 27 2016

    Publication series

    NameMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016
    Volume1

    Other

    OtherMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016
    CountryUnited States
    CitySalt Lake City
    Period10/23/1610/27/16

    Fingerprint

    3D printers
    Superalloys
    Epitaxial growth
    Carbides
    Single crystals
    Scanning
    Lasers
    Rhenium
    Nickel
    Energy dispersive spectroscopy
    Carbon
    Grain boundary sliding
    Powders
    Optical microscopy
    Grain boundaries
    Fusion reactions

    All Science Journal Classification (ASJC) codes

    • Materials Science (miscellaneous)
    • Mechanics of Materials
    • Energy Engineering and Power Technology

    Cite this

    Basak, A., & Das, S. (2016). Carbide formation in additive manufacturing of single-crystal superalloy René N5 processed through scanning laser epitaxy. In Materials Science and Technology Conference and Exhibition 2016, MS and T 2016 (pp. 51-58). (Materials Science and Technology Conference and Exhibition 2016, MS and T 2016; Vol. 1). Association for Iron and Steel Technology, AISTECH.
    Basak, Amrita ; Das, Suman. / Carbide formation in additive manufacturing of single-crystal superalloy René N5 processed through scanning laser epitaxy. Materials Science and Technology Conference and Exhibition 2016, MS and T 2016. Association for Iron and Steel Technology, AISTECH, 2016. pp. 51-58 (Materials Science and Technology Conference and Exhibition 2016, MS and T 2016).
    @inproceedings{a85d48345f984244ad19e78f5f818844,
    title = "Carbide formation in additive manufacturing of single-crystal superalloy Ren{\'e} N5 processed through scanning laser epitaxy",
    abstract = "Carbon is added to single-crystal nickel-base superalloys to reduce the formation of grain defects. Carbon and a carbide former drive precipitation of carbides at grain boundaries reducing grain boundary sliding. In this paper, carbide formation in nickel-base superalloy Ren{\'e} N5 was studied using optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Samples of Ren{\'e} N5 were fabricated using scanning laser epitaxy (SLE), a powder bed fusion-based additive manufacturing (AM) technique. The carbides formed in these alloys were mostly Chinese script-type carbides which formed discrete networks in the interdendritic region. In addition, blocky and elongated carbides were also observed. EDS analysis showed the carbides to be Ta rich. The findings also showed the presence of rhenium in the Chinese-script carbides. However, rhenium was not found in the blocky carbides.",
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    Basak, A & Das, S 2016, Carbide formation in additive manufacturing of single-crystal superalloy René N5 processed through scanning laser epitaxy. in Materials Science and Technology Conference and Exhibition 2016, MS and T 2016. Materials Science and Technology Conference and Exhibition 2016, MS and T 2016, vol. 1, Association for Iron and Steel Technology, AISTECH, pp. 51-58, Materials Science and Technology Conference and Exhibition 2016, MS and T 2016, Salt Lake City, United States, 10/23/16.

    Carbide formation in additive manufacturing of single-crystal superalloy René N5 processed through scanning laser epitaxy. / Basak, Amrita; Das, Suman.

    Materials Science and Technology Conference and Exhibition 2016, MS and T 2016. Association for Iron and Steel Technology, AISTECH, 2016. p. 51-58 (Materials Science and Technology Conference and Exhibition 2016, MS and T 2016; Vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    N2 - Carbon is added to single-crystal nickel-base superalloys to reduce the formation of grain defects. Carbon and a carbide former drive precipitation of carbides at grain boundaries reducing grain boundary sliding. In this paper, carbide formation in nickel-base superalloy René N5 was studied using optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Samples of René N5 were fabricated using scanning laser epitaxy (SLE), a powder bed fusion-based additive manufacturing (AM) technique. The carbides formed in these alloys were mostly Chinese script-type carbides which formed discrete networks in the interdendritic region. In addition, blocky and elongated carbides were also observed. EDS analysis showed the carbides to be Ta rich. The findings also showed the presence of rhenium in the Chinese-script carbides. However, rhenium was not found in the blocky carbides.

    AB - Carbon is added to single-crystal nickel-base superalloys to reduce the formation of grain defects. Carbon and a carbide former drive precipitation of carbides at grain boundaries reducing grain boundary sliding. In this paper, carbide formation in nickel-base superalloy René N5 was studied using optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Samples of René N5 were fabricated using scanning laser epitaxy (SLE), a powder bed fusion-based additive manufacturing (AM) technique. The carbides formed in these alloys were mostly Chinese script-type carbides which formed discrete networks in the interdendritic region. In addition, blocky and elongated carbides were also observed. EDS analysis showed the carbides to be Ta rich. The findings also showed the presence of rhenium in the Chinese-script carbides. However, rhenium was not found in the blocky carbides.

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    Basak A, Das S. Carbide formation in additive manufacturing of single-crystal superalloy René N5 processed through scanning laser epitaxy. In Materials Science and Technology Conference and Exhibition 2016, MS and T 2016. Association for Iron and Steel Technology, AISTECH. 2016. p. 51-58. (Materials Science and Technology Conference and Exhibition 2016, MS and T 2016).