Particular fatigue resistance of stabilized stainless steel: Endurance limit, strength and ductility of fatigued steel

Jussi Solin (Corresponding author), Jouni Alhainen, Esko Arilahti, Tommi Seppänen, Wolfgang Mayinger

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    Comprehensive experimental research on fatigue performance of niobium stabilized (type 347) X6CrNiNb1810mod steel has revealed particular features of cyclic performance. This paper reports and discusses on the endurance limit behavior studied by strain controlled HCF tests at room and elevated temperatures. In contrast to carbon steels, stainless steels can tolerate notable amounts of plastic strain and display broad hysteresis loops at and below endurance limit. Together with pronounced secondary hardening, this results to abrupt endurance limit behavior. The modified Miner rule with S-N -curves extrapolated to low amplitudes is generally applicable for carbon steels, but not for stainless. Effectiveness of the endurance limit even with variable amplitude straining was shown for 347 type steel. Extrapolation of e-N curves beyond a few million cycles is conservative. An increase of temperature decreases, but does not vanish the endurance limit. Another peculiar feature of the studied stainless steel is its superior ductility, which is not affected by partial fatigue 'damage'. Five LCF tests at 325°C and 0.22 = ea = 0.5% were interrupted beyond the half-life condition (N/N25 = 0.5) at 0.5 = CUF = 0.9. Cyclic straining was directly followed by monotonic pulling to fracture. Surprisingly low correlation between tensile properties and fatigue usage was observed. The ultimate tensile strength was preserved within 10 MPa (2.5%) in all cases. Yield strength and elongation remained practically unchanged by pre-fatigue. This paper provides new experimental results. They are discussed together with earlier observations on the same steel extracted from a pipe, which has been manufactured for use in primary loop of a German NPP.

    Original languageEnglish
    Title of host publicationASME 2019 Pressure Vessels and Piping Conference, PVP 2019
    Subtitle of host publicationCodes and Standards
    PublisherAmerican Society of Mechanical Engineers ASME
    Number of pages7
    Volume1
    ISBN (Electronic)978-0-7918-5892-9
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA4 Article in a conference publication
    EventASME 2019 Pressure Vessels and Piping Conference, PVP 2019 - San Antonio, United States
    Duration: 14 Jul 201919 Jul 2019

    Conference

    ConferenceASME 2019 Pressure Vessels and Piping Conference, PVP 2019
    CountryUnited States
    CitySan Antonio
    Period14/07/1919/07/19

    Fingerprint

    Ductility
    Durability
    Stainless steel
    Fatigue of materials
    Steel
    Carbon steel
    Miners
    Fatigue damage
    Hysteresis loops
    Niobium
    Tensile properties
    Extrapolation
    Yield stress
    Hardening
    Elongation
    Plastic deformation
    Tensile strength
    Pipe
    Temperature

    Keywords

    • Endurance limit
    • Fatigue
    • Stainless
    • Strain

    Cite this

    Solin, J., Alhainen, J., Arilahti, E., Seppänen, T., & Mayinger, W. (2019). Particular fatigue resistance of stabilized stainless steel: Endurance limit, strength and ductility of fatigued steel. In ASME 2019 Pressure Vessels and Piping Conference, PVP 2019: Codes and Standards (Vol. 1). [PVP2019-93317] American Society of Mechanical Engineers ASME. https://doi.org/10.1115/PVP2019-93317
    Solin, Jussi ; Alhainen, Jouni ; Arilahti, Esko ; Seppänen, Tommi ; Mayinger, Wolfgang. / Particular fatigue resistance of stabilized stainless steel : Endurance limit, strength and ductility of fatigued steel. ASME 2019 Pressure Vessels and Piping Conference, PVP 2019: Codes and Standards. Vol. 1 American Society of Mechanical Engineers ASME, 2019.
    @inproceedings{0678d71eb69646b6a678882a070834f5,
    title = "Particular fatigue resistance of stabilized stainless steel: Endurance limit, strength and ductility of fatigued steel",
    abstract = "Comprehensive experimental research on fatigue performance of niobium stabilized (type 347) X6CrNiNb1810mod steel has revealed particular features of cyclic performance. This paper reports and discusses on the endurance limit behavior studied by strain controlled HCF tests at room and elevated temperatures. In contrast to carbon steels, stainless steels can tolerate notable amounts of plastic strain and display broad hysteresis loops at and below endurance limit. Together with pronounced secondary hardening, this results to abrupt endurance limit behavior. The modified Miner rule with S-N -curves extrapolated to low amplitudes is generally applicable for carbon steels, but not for stainless. Effectiveness of the endurance limit even with variable amplitude straining was shown for 347 type steel. Extrapolation of e-N curves beyond a few million cycles is conservative. An increase of temperature decreases, but does not vanish the endurance limit. Another peculiar feature of the studied stainless steel is its superior ductility, which is not affected by partial fatigue 'damage'. Five LCF tests at 325°C and 0.22 = ea = 0.5{\%} were interrupted beyond the half-life condition (N/N25 = 0.5) at 0.5 = CUF = 0.9. Cyclic straining was directly followed by monotonic pulling to fracture. Surprisingly low correlation between tensile properties and fatigue usage was observed. The ultimate tensile strength was preserved within 10 MPa (2.5{\%}) in all cases. Yield strength and elongation remained practically unchanged by pre-fatigue. This paper provides new experimental results. They are discussed together with earlier observations on the same steel extracted from a pipe, which has been manufactured for use in primary loop of a German NPP.",
    keywords = "Endurance limit, Fatigue, Stainless, Strain",
    author = "Jussi Solin and Jouni Alhainen and Esko Arilahti and Tommi Sepp{\"a}nen and Wolfgang Mayinger",
    year = "2019",
    doi = "10.1115/PVP2019-93317",
    language = "English",
    volume = "1",
    booktitle = "ASME 2019 Pressure Vessels and Piping Conference, PVP 2019",
    publisher = "American Society of Mechanical Engineers ASME",
    address = "United States",

    }

    Solin, J, Alhainen, J, Arilahti, E, Seppänen, T & Mayinger, W 2019, Particular fatigue resistance of stabilized stainless steel: Endurance limit, strength and ductility of fatigued steel. in ASME 2019 Pressure Vessels and Piping Conference, PVP 2019: Codes and Standards. vol. 1, PVP2019-93317, American Society of Mechanical Engineers ASME, ASME 2019 Pressure Vessels and Piping Conference, PVP 2019, San Antonio, United States, 14/07/19. https://doi.org/10.1115/PVP2019-93317

    Particular fatigue resistance of stabilized stainless steel : Endurance limit, strength and ductility of fatigued steel. / Solin, Jussi (Corresponding author); Alhainen, Jouni; Arilahti, Esko; Seppänen, Tommi; Mayinger, Wolfgang.

    ASME 2019 Pressure Vessels and Piping Conference, PVP 2019: Codes and Standards. Vol. 1 American Society of Mechanical Engineers ASME, 2019. PVP2019-93317.

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    TY - GEN

    T1 - Particular fatigue resistance of stabilized stainless steel

    T2 - Endurance limit, strength and ductility of fatigued steel

    AU - Solin, Jussi

    AU - Alhainen, Jouni

    AU - Arilahti, Esko

    AU - Seppänen, Tommi

    AU - Mayinger, Wolfgang

    PY - 2019

    Y1 - 2019

    N2 - Comprehensive experimental research on fatigue performance of niobium stabilized (type 347) X6CrNiNb1810mod steel has revealed particular features of cyclic performance. This paper reports and discusses on the endurance limit behavior studied by strain controlled HCF tests at room and elevated temperatures. In contrast to carbon steels, stainless steels can tolerate notable amounts of plastic strain and display broad hysteresis loops at and below endurance limit. Together with pronounced secondary hardening, this results to abrupt endurance limit behavior. The modified Miner rule with S-N -curves extrapolated to low amplitudes is generally applicable for carbon steels, but not for stainless. Effectiveness of the endurance limit even with variable amplitude straining was shown for 347 type steel. Extrapolation of e-N curves beyond a few million cycles is conservative. An increase of temperature decreases, but does not vanish the endurance limit. Another peculiar feature of the studied stainless steel is its superior ductility, which is not affected by partial fatigue 'damage'. Five LCF tests at 325°C and 0.22 = ea = 0.5% were interrupted beyond the half-life condition (N/N25 = 0.5) at 0.5 = CUF = 0.9. Cyclic straining was directly followed by monotonic pulling to fracture. Surprisingly low correlation between tensile properties and fatigue usage was observed. The ultimate tensile strength was preserved within 10 MPa (2.5%) in all cases. Yield strength and elongation remained practically unchanged by pre-fatigue. This paper provides new experimental results. They are discussed together with earlier observations on the same steel extracted from a pipe, which has been manufactured for use in primary loop of a German NPP.

    AB - Comprehensive experimental research on fatigue performance of niobium stabilized (type 347) X6CrNiNb1810mod steel has revealed particular features of cyclic performance. This paper reports and discusses on the endurance limit behavior studied by strain controlled HCF tests at room and elevated temperatures. In contrast to carbon steels, stainless steels can tolerate notable amounts of plastic strain and display broad hysteresis loops at and below endurance limit. Together with pronounced secondary hardening, this results to abrupt endurance limit behavior. The modified Miner rule with S-N -curves extrapolated to low amplitudes is generally applicable for carbon steels, but not for stainless. Effectiveness of the endurance limit even with variable amplitude straining was shown for 347 type steel. Extrapolation of e-N curves beyond a few million cycles is conservative. An increase of temperature decreases, but does not vanish the endurance limit. Another peculiar feature of the studied stainless steel is its superior ductility, which is not affected by partial fatigue 'damage'. Five LCF tests at 325°C and 0.22 = ea = 0.5% were interrupted beyond the half-life condition (N/N25 = 0.5) at 0.5 = CUF = 0.9. Cyclic straining was directly followed by monotonic pulling to fracture. Surprisingly low correlation between tensile properties and fatigue usage was observed. The ultimate tensile strength was preserved within 10 MPa (2.5%) in all cases. Yield strength and elongation remained practically unchanged by pre-fatigue. This paper provides new experimental results. They are discussed together with earlier observations on the same steel extracted from a pipe, which has been manufactured for use in primary loop of a German NPP.

    KW - Endurance limit

    KW - Fatigue

    KW - Stainless

    KW - Strain

    UR - http://www.scopus.com/inward/record.url?scp=85075832002&partnerID=8YFLogxK

    U2 - 10.1115/PVP2019-93317

    DO - 10.1115/PVP2019-93317

    M3 - Conference article in proceedings

    AN - SCOPUS:85075832002

    VL - 1

    BT - ASME 2019 Pressure Vessels and Piping Conference, PVP 2019

    PB - American Society of Mechanical Engineers ASME

    ER -

    Solin J, Alhainen J, Arilahti E, Seppänen T, Mayinger W. Particular fatigue resistance of stabilized stainless steel: Endurance limit, strength and ductility of fatigued steel. In ASME 2019 Pressure Vessels and Piping Conference, PVP 2019: Codes and Standards. Vol. 1. American Society of Mechanical Engineers ASME. 2019. PVP2019-93317 https://doi.org/10.1115/PVP2019-93317