Effect of displacement dose and irradiation temperature on tensile and fracture toughness properties of titanium alloys

    Research output: Contribution to journalArticleScientificpeer-review

    6 Citations (Scopus)

    Abstract

    At a low dose level of 0.001 dpa the Ti6Al4V (α + β) alloy showed softening and at higher doses an increase in hardening and lack of work hardening after irradiation at 60 °C. The (α + β) alloy seemed to suffer from plastic instability when irradiated to a dose level of 0.3 dpa at 60 °C. At elevated temperatures a substantial amount of hardening was observed in the (α + β) alloy when tested in the irradiated condition. Earlier studies have shown that the fracture toughness behaviour of the irradiated Ti5Al2.5Sn (α) and (α + β) alloys were quite similar at ambient temperatures. At elevated temperatures, fracture toughness of the irradiated (α + β) alloy decreased more than that of the (α) alloy when compared to the results obtained in the unirradiated condition. The large irradiation hardening and loss of fracture toughness in the (α + β) alloy appears to be related to radiation dose level, temperature and radiation-induced precipitation in the (α + β) alloy.
    Original languageEnglish
    Pages (from-to)627-632
    JournalJournal of Nuclear Materials
    Volume367-370
    Issue numberPart. A
    DOIs
    Publication statusPublished - 2007
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    titanium alloys
    toughness
    fracture strength
    Titanium alloys
    Dosimetry
    Fracture toughness
    Irradiation
    dosage
    irradiation
    hardening
    Hardening
    Temperature
    temperature
    work hardening
    radiation
    Strain hardening
    softening
    ambient temperature
    plastics
    Plastics

    Keywords

    • titanium
    • titanium alloys
    • fusion energy
    • fusion reactors
    • tensile strength
    • tensile stress
    • fracture toughness

    Cite this

    @article{714ef15058374e5da9f05c874299848d,
    title = "Effect of displacement dose and irradiation temperature on tensile and fracture toughness properties of titanium alloys",
    abstract = "At a low dose level of 0.001 dpa the Ti6Al4V (α + β) alloy showed softening and at higher doses an increase in hardening and lack of work hardening after irradiation at 60 °C. The (α + β) alloy seemed to suffer from plastic instability when irradiated to a dose level of 0.3 dpa at 60 °C. At elevated temperatures a substantial amount of hardening was observed in the (α + β) alloy when tested in the irradiated condition. Earlier studies have shown that the fracture toughness behaviour of the irradiated Ti5Al2.5Sn (α) and (α + β) alloys were quite similar at ambient temperatures. At elevated temperatures, fracture toughness of the irradiated (α + β) alloy decreased more than that of the (α) alloy when compared to the results obtained in the unirradiated condition. The large irradiation hardening and loss of fracture toughness in the (α + β) alloy appears to be related to radiation dose level, temperature and radiation-induced precipitation in the (α + β) alloy.",
    keywords = "titanium, titanium alloys, fusion energy, fusion reactors, tensile strength, tensile stress, fracture toughness",
    author = "Seppo T{\"a}htinen and P. Moilanen and Singh, {B. N.}",
    year = "2007",
    doi = "10.1016/j.jnucmat.2007.03.042",
    language = "English",
    volume = "367-370",
    pages = "627--632",
    journal = "Journal of Nuclear Materials",
    issn = "0022-3115",
    publisher = "Elsevier",
    number = "Part. A",

    }

    Effect of displacement dose and irradiation temperature on tensile and fracture toughness properties of titanium alloys. / Tähtinen, Seppo; Moilanen, P.; Singh, B. N.

    In: Journal of Nuclear Materials, Vol. 367-370 , No. Part. A, 2007, p. 627-632.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Effect of displacement dose and irradiation temperature on tensile and fracture toughness properties of titanium alloys

    AU - Tähtinen, Seppo

    AU - Moilanen, P.

    AU - Singh, B. N.

    PY - 2007

    Y1 - 2007

    N2 - At a low dose level of 0.001 dpa the Ti6Al4V (α + β) alloy showed softening and at higher doses an increase in hardening and lack of work hardening after irradiation at 60 °C. The (α + β) alloy seemed to suffer from plastic instability when irradiated to a dose level of 0.3 dpa at 60 °C. At elevated temperatures a substantial amount of hardening was observed in the (α + β) alloy when tested in the irradiated condition. Earlier studies have shown that the fracture toughness behaviour of the irradiated Ti5Al2.5Sn (α) and (α + β) alloys were quite similar at ambient temperatures. At elevated temperatures, fracture toughness of the irradiated (α + β) alloy decreased more than that of the (α) alloy when compared to the results obtained in the unirradiated condition. The large irradiation hardening and loss of fracture toughness in the (α + β) alloy appears to be related to radiation dose level, temperature and radiation-induced precipitation in the (α + β) alloy.

    AB - At a low dose level of 0.001 dpa the Ti6Al4V (α + β) alloy showed softening and at higher doses an increase in hardening and lack of work hardening after irradiation at 60 °C. The (α + β) alloy seemed to suffer from plastic instability when irradiated to a dose level of 0.3 dpa at 60 °C. At elevated temperatures a substantial amount of hardening was observed in the (α + β) alloy when tested in the irradiated condition. Earlier studies have shown that the fracture toughness behaviour of the irradiated Ti5Al2.5Sn (α) and (α + β) alloys were quite similar at ambient temperatures. At elevated temperatures, fracture toughness of the irradiated (α + β) alloy decreased more than that of the (α) alloy when compared to the results obtained in the unirradiated condition. The large irradiation hardening and loss of fracture toughness in the (α + β) alloy appears to be related to radiation dose level, temperature and radiation-induced precipitation in the (α + β) alloy.

    KW - titanium

    KW - titanium alloys

    KW - fusion energy

    KW - fusion reactors

    KW - tensile strength

    KW - tensile stress

    KW - fracture toughness

    U2 - 10.1016/j.jnucmat.2007.03.042

    DO - 10.1016/j.jnucmat.2007.03.042

    M3 - Article

    VL - 367-370

    SP - 627

    EP - 632

    JO - Journal of Nuclear Materials

    JF - Journal of Nuclear Materials

    SN - 0022-3115

    IS - Part. A

    ER -