Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys

Seppo Tähtinen (Corresponding Author), Pekka Moilanen, B.N. Singh, D.J. Edwards

    Research output: Contribution to journalArticleScientificpeer-review

    16 Citations (Scopus)

    Abstract

    In the unirradiated condition the Ti6Al4V (α+β) alloy has slightly higher tensile strength and noticeably lower ductility compared to that of the Ti5Al2.5Sn (α) alloy both at 50 and 350 °C. The fracture toughness behaviour of both alloys is similar at ambient temperature. At 350 °C, on the other hand, the fracture toughness of the (α) alloy is lower compared to that of the (α+β) alloy.
    Neutron irradiation at 50 °C to a dose level of 0.3 dpa caused hardening, plastic instability and a substantial reduction in fracture toughness of both alloys. Irradiation at 350 °C resulted in a substantial hardening and a significant decrease in the fracture toughness in the (α+β) alloy due to irradiation induced precipitation whereas only minor changes in the tensile and fracture toughness behaviour were observed in the (α) alloy.
    The tensile and fracture toughness properties of the (α+β) alloy are more strongly affected by neutron irradiation compared to that of the (α) alloy.
    Original languageEnglish
    Pages (from-to)416-420
    JournalJournal of Nuclear Materials
    Volume307-311
    Issue numberPart 1
    DOIs
    Publication statusPublished - 2002
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    titanium alloys
    toughness
    fracture strength
    Titanium alloys
    Fracture toughness
    Neutrons
    neutrons
    Neutron irradiation
    neutron irradiation
    hardening
    Hardening
    Irradiation
    irradiation
    ductility
    tensile strength
    ambient temperature
    Dosimetry
    Ductility
    Tensile strength
    plastics

    Keywords

    • titanium
    • titanium alloys
    • irradiation
    • irradiation embrittlement
    • fusion energy
    • fusion reactors
    • ITER

    Cite this

    @article{d51cbe9f85844721b2b3425cc82136e9,
    title = "Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys",
    abstract = "In the unirradiated condition the Ti6Al4V (α+β) alloy has slightly higher tensile strength and noticeably lower ductility compared to that of the Ti5Al2.5Sn (α) alloy both at 50 and 350 °C. The fracture toughness behaviour of both alloys is similar at ambient temperature. At 350 °C, on the other hand, the fracture toughness of the (α) alloy is lower compared to that of the (α+β) alloy. Neutron irradiation at 50 °C to a dose level of 0.3 dpa caused hardening, plastic instability and a substantial reduction in fracture toughness of both alloys. Irradiation at 350 °C resulted in a substantial hardening and a significant decrease in the fracture toughness in the (α+β) alloy due to irradiation induced precipitation whereas only minor changes in the tensile and fracture toughness behaviour were observed in the (α) alloy. The tensile and fracture toughness properties of the (α+β) alloy are more strongly affected by neutron irradiation compared to that of the (α) alloy.",
    keywords = "titanium, titanium alloys, irradiation, irradiation embrittlement, fusion energy, fusion reactors, ITER",
    author = "Seppo T{\"a}htinen and Pekka Moilanen and B.N. Singh and D.J. Edwards",
    year = "2002",
    doi = "10.1016/S0022-3115(02)01010-3",
    language = "English",
    volume = "307-311",
    pages = "416--420",
    journal = "Journal of Nuclear Materials",
    issn = "0022-3115",
    publisher = "Elsevier",
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    Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys. / Tähtinen, Seppo (Corresponding Author); Moilanen, Pekka; Singh, B.N.; Edwards, D.J.

    In: Journal of Nuclear Materials, Vol. 307-311, No. Part 1, 2002, p. 416-420.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys

    AU - Tähtinen, Seppo

    AU - Moilanen, Pekka

    AU - Singh, B.N.

    AU - Edwards, D.J.

    PY - 2002

    Y1 - 2002

    N2 - In the unirradiated condition the Ti6Al4V (α+β) alloy has slightly higher tensile strength and noticeably lower ductility compared to that of the Ti5Al2.5Sn (α) alloy both at 50 and 350 °C. The fracture toughness behaviour of both alloys is similar at ambient temperature. At 350 °C, on the other hand, the fracture toughness of the (α) alloy is lower compared to that of the (α+β) alloy. Neutron irradiation at 50 °C to a dose level of 0.3 dpa caused hardening, plastic instability and a substantial reduction in fracture toughness of both alloys. Irradiation at 350 °C resulted in a substantial hardening and a significant decrease in the fracture toughness in the (α+β) alloy due to irradiation induced precipitation whereas only minor changes in the tensile and fracture toughness behaviour were observed in the (α) alloy. The tensile and fracture toughness properties of the (α+β) alloy are more strongly affected by neutron irradiation compared to that of the (α) alloy.

    AB - In the unirradiated condition the Ti6Al4V (α+β) alloy has slightly higher tensile strength and noticeably lower ductility compared to that of the Ti5Al2.5Sn (α) alloy both at 50 and 350 °C. The fracture toughness behaviour of both alloys is similar at ambient temperature. At 350 °C, on the other hand, the fracture toughness of the (α) alloy is lower compared to that of the (α+β) alloy. Neutron irradiation at 50 °C to a dose level of 0.3 dpa caused hardening, plastic instability and a substantial reduction in fracture toughness of both alloys. Irradiation at 350 °C resulted in a substantial hardening and a significant decrease in the fracture toughness in the (α+β) alloy due to irradiation induced precipitation whereas only minor changes in the tensile and fracture toughness behaviour were observed in the (α) alloy. The tensile and fracture toughness properties of the (α+β) alloy are more strongly affected by neutron irradiation compared to that of the (α) alloy.

    KW - titanium

    KW - titanium alloys

    KW - irradiation

    KW - irradiation embrittlement

    KW - fusion energy

    KW - fusion reactors

    KW - ITER

    U2 - 10.1016/S0022-3115(02)01010-3

    DO - 10.1016/S0022-3115(02)01010-3

    M3 - Article

    VL - 307-311

    SP - 416

    EP - 420

    JO - Journal of Nuclear Materials

    JF - Journal of Nuclear Materials

    SN - 0022-3115

    IS - Part 1

    ER -