TY - GEN
T1 - Solid State Diffusion Bonding of ODS Eurofer Steel by Spark Plasma Sintering
AU - Fu, J.
AU - Brouwer, J. C.
AU - Richardson, I. M.
AU - Hermans, M. J.M.
N1 - Accepted Author Manuscript
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - Joining
KW - Mechanical properties
KW - Oxide dispersion strengthened alloy
KW - Spark plasma sintering
UR - http://www.scopus.com/inward/record.url?scp=85081323563&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-36296-6_192
DO - 10.1007/978-3-030-36296-6_192
M3 - Conference contribution
AN - SCOPUS:85081323563
SN - 978-3-030-36295-9
T3 - Minerals, Metals and Materials Series
SP - 2095
EP - 2102
BT - Proceedings of the 149th Annual Meeting and Exhibition Supplemental (TMS 2020)
PB - Springer
CY - Cham, Switzerland
T2 - TMS 2020: 149th Annual Meeting & Exhibition of the Minerals, Metals and Materials Society
Y2 - 23 February 2020 through 27 February 2020
ER -