Solid State Diffusion Bonding of ODS Eurofer Steel by Spark Plasma Sintering

J. Fu*, J. C. Brouwer, I. M. Richardson, M. J.M. Hermans

*Corresponding author for this work

    Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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    Abstract

    Oxide dispersion strengthened (ODS) steels are considered to be one of the candidate structural materials for advanced nuclear applications due to their high elevated-temperature strength, corrosion resistance, and radiation tolerance. Joining of ODS steels by traditional fusion joining techniques is not applicable, because the melting process results in the coarsening of fine grains and agglomeration of nanosized oxide particles, and consequently a significant loss of strength. Spark plasma sintering (SPS) has recently been employed as a novel joining technique, which could be beneficial for joining ODS steels considering the solid state characteristic. A powder metallurgy prepared ODS Eurofer steel was successfully joined using SPS. The microstructure and mechanical properties of the joints were investigated. An almost defect-free joint was obtained at the selected processing condition. The tensile properties of the joints are comparable to the base material. Fracture analysis shows an intergranular fracture in the as-joined sample, while a ductile fracture with well-defined dimples is found in the tempered sample.

    Original languageEnglish
    Title of host publicationProceedings of the 149th Annual Meeting and Exhibition Supplemental (TMS 2020)
    Place of PublicationCham, Switzerland
    PublisherSpringer
    Pages2095-2102
    ISBN (Electronic)978-3-030-36296-6
    ISBN (Print)978-3-030-36295-9
    DOIs
    Publication statusPublished - 2020
    EventTMS 2020: 149th Annual Meeting & Exhibition of the Minerals, Metals and Materials Society - San Diego, United States
    Duration: 23 Feb 202027 Feb 2020

    Publication series

    NameMinerals, Metals and Materials Series
    ISSN (Print)2367-1181
    ISSN (Electronic)2367-1696

    Conference

    ConferenceTMS 2020: 149th Annual Meeting & Exhibition of the Minerals, Metals and Materials Society
    CountryUnited States
    CitySan Diego
    Period23/02/2027/02/20

    Bibliographical note

    Accepted Author Manuscript

    Keywords

    • Joining
    • Mechanical properties
    • Oxide dispersion strengthened alloy
    • Spark plasma sintering

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