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
ISBN (Electronic)978-3-030-36296-6
ISBN (Print)978-3-030-36295-9
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


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

    Research areas

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

ID: 71535839