Effect of neutron irradiation on mechanical properties of Cu/SS joints after single and multiple HIP cycles

Seppo Tähtinen (Corresponding Author), Bachu Singh, Palle Toft

    Research output: Contribution to journalArticleScientificpeer-review

    1 Citation (Scopus)

    Abstract

    The present design of the ITER plasma facing components consists of a copper alloy heat sink layer between plasma facing materials and stainless steel structure. The main option for manufacturing these components is hot isostatic pressing (HIP) method and several HIP thermal cycles are foreseen for manufacturing of the complete blanket module. Mechanical characterisation of HIP joints between dissimilar metals is a complicated issue, where information on mechanical properties of base alloys, metallurgy of the HIP joints and mechanical testing methods will be required. The tensile and three point bend tests produced different fracture modes, depending on test temperature, applied HIP thermal cycles and neutron irradiation. The fracture mode was either ductile fracture of copper alloy or joint interface fracture. The mechanical properties of the HIP joint specimens were dominated by strength mismatch of the base alloys which was affected by HIP thermal cycles and neutron irradiation.

    Original languageEnglish
    Pages (from-to)1238 - 1242
    Number of pages5
    JournalJournal of Nuclear Materials
    Volume283-287
    Issue numberPart 2
    DOIs
    Publication statusPublished - 2000
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    hot isostatic pressing
    Hot isostatic pressing
    Neutron irradiation
    neutron irradiation
    mechanical properties
    Mechanical properties
    cycles
    copper alloys
    Copper alloys
    manufacturing
    bend tests
    steel structures
    Dissimilar metals
    Plasmas
    metallurgy
    irradiation
    Ductile fracture
    Mechanical testing
    blankets
    Stainless Steel

    Cite this

    @article{edc207a3aa0e42b8859c07587524cdda,
    title = "Effect of neutron irradiation on mechanical properties of Cu/SS joints after single and multiple HIP cycles",
    abstract = "The present design of the ITER plasma facing components consists of a copper alloy heat sink layer between plasma facing materials and stainless steel structure. The main option for manufacturing these components is hot isostatic pressing (HIP) method and several HIP thermal cycles are foreseen for manufacturing of the complete blanket module. Mechanical characterisation of HIP joints between dissimilar metals is a complicated issue, where information on mechanical properties of base alloys, metallurgy of the HIP joints and mechanical testing methods will be required. The tensile and three point bend tests produced different fracture modes, depending on test temperature, applied HIP thermal cycles and neutron irradiation. The fracture mode was either ductile fracture of copper alloy or joint interface fracture. The mechanical properties of the HIP joint specimens were dominated by strength mismatch of the base alloys which was affected by HIP thermal cycles and neutron irradiation.",
    author = "Seppo T{\"a}htinen and Bachu Singh and Palle Toft",
    note = "Project code: V9SU00208",
    year = "2000",
    doi = "10.1016/S0022-3115(00)00177-X",
    language = "English",
    volume = "283-287",
    pages = "1238 -- 1242",
    journal = "Journal of Nuclear Materials",
    issn = "0022-3115",
    publisher = "Elsevier",
    number = "Part 2",

    }

    Effect of neutron irradiation on mechanical properties of Cu/SS joints after single and multiple HIP cycles. / Tähtinen, Seppo (Corresponding Author); Singh, Bachu; Toft, Palle.

    In: Journal of Nuclear Materials, Vol. 283-287, No. Part 2, 2000, p. 1238 - 1242.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Effect of neutron irradiation on mechanical properties of Cu/SS joints after single and multiple HIP cycles

    AU - Tähtinen, Seppo

    AU - Singh, Bachu

    AU - Toft, Palle

    N1 - Project code: V9SU00208

    PY - 2000

    Y1 - 2000

    N2 - The present design of the ITER plasma facing components consists of a copper alloy heat sink layer between plasma facing materials and stainless steel structure. The main option for manufacturing these components is hot isostatic pressing (HIP) method and several HIP thermal cycles are foreseen for manufacturing of the complete blanket module. Mechanical characterisation of HIP joints between dissimilar metals is a complicated issue, where information on mechanical properties of base alloys, metallurgy of the HIP joints and mechanical testing methods will be required. The tensile and three point bend tests produced different fracture modes, depending on test temperature, applied HIP thermal cycles and neutron irradiation. The fracture mode was either ductile fracture of copper alloy or joint interface fracture. The mechanical properties of the HIP joint specimens were dominated by strength mismatch of the base alloys which was affected by HIP thermal cycles and neutron irradiation.

    AB - The present design of the ITER plasma facing components consists of a copper alloy heat sink layer between plasma facing materials and stainless steel structure. The main option for manufacturing these components is hot isostatic pressing (HIP) method and several HIP thermal cycles are foreseen for manufacturing of the complete blanket module. Mechanical characterisation of HIP joints between dissimilar metals is a complicated issue, where information on mechanical properties of base alloys, metallurgy of the HIP joints and mechanical testing methods will be required. The tensile and three point bend tests produced different fracture modes, depending on test temperature, applied HIP thermal cycles and neutron irradiation. The fracture mode was either ductile fracture of copper alloy or joint interface fracture. The mechanical properties of the HIP joint specimens were dominated by strength mismatch of the base alloys which was affected by HIP thermal cycles and neutron irradiation.

    U2 - 10.1016/S0022-3115(00)00177-X

    DO - 10.1016/S0022-3115(00)00177-X

    M3 - Article

    VL - 283-287

    SP - 1238

    EP - 1242

    JO - Journal of Nuclear Materials

    JF - Journal of Nuclear Materials

    SN - 0022-3115

    IS - Part 2

    ER -