Experimental Research on Cyclic Response, Hold Effects and Fatigue of Stainless Steel

Jussi Solin, Jouni Alhainen, Tommi Seppänen, H. Ertugrul Karabaki, Wolfgang Mayinger

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

    6 Citations (Scopus)

    Abstract

    Our research on fatigue performance of stainless steel and transferability of laboratory data to nuclear power plant operational conditions continues. The focus is in quantification of time and temperature dependent damage relaxation during holds introduced within strain controlled LCF fatigue tests with niobium stabilized X6CrNiNb1810mod steel. These holds aim to simulate steady state normal operation between fatigue relevant cycles at start-up, shut-down or power changes in PWR primary circuit components, e.g. the pressurizer spray lines and surge line.

    Amplified cyclic hardening was observed at strain rates approaching zero at normal operation temperatures (≤325°C). Even more pronounced static hardening is consistently measured during holds in elevated temperatures (≥200°C). Beneficial effects of holds in material endurance were shown five years ago. The latest results suggest another beneficial change in component fatigue performance. In addition to improved material response, de-localization of strain is demonstrated in this paper. Our target is a thermodynamic prediction model for improved assessment of fatigue with normal operation periods. The model should quantify the life extension due to long periods in normal operation at operational temperatures.
    Original languageEnglish
    Title of host publicationASME 2017 Pressure Vessels and Piping Conference
    PublisherAmerican Society of Mechanical Engineers ASME
    Number of pages10
    Volume1A
    ISBN (Electronic)9780791857908
    ISBN (Print)978-0-7918-5790-8
    DOIs
    Publication statusPublished - 1 Jan 2017
    MoE publication typeA4 Article in a conference publication
    EventASME 2017 Pressure Vessels and Piping Conference, PVP 2017 - Waikoloa, United States
    Duration: 16 Jul 201720 Jul 2017

    Conference

    ConferenceASME 2017 Pressure Vessels and Piping Conference, PVP 2017
    CountryUnited States
    CityWaikoloa
    Period16/07/1720/07/17

    Fingerprint

    Stainless steel
    Fatigue of materials
    Hardening
    Temperature
    Niobium
    Nuclear power plants
    Strain rate
    Durability
    Thermodynamics
    Steel
    Networks (circuits)

    Cite this

    Solin, J., Alhainen, J., Seppänen, T., Karabaki, H. E., & Mayinger, W. (2017). Experimental Research on Cyclic Response, Hold Effects and Fatigue of Stainless Steel. In ASME 2017 Pressure Vessels and Piping Conference (Vol. 1A). [PVP2017-66103] American Society of Mechanical Engineers ASME. https://doi.org/10.1115/PVP2017-66103
    Solin, Jussi ; Alhainen, Jouni ; Seppänen, Tommi ; Karabaki, H. Ertugrul ; Mayinger, Wolfgang. / Experimental Research on Cyclic Response, Hold Effects and Fatigue of Stainless Steel. ASME 2017 Pressure Vessels and Piping Conference. Vol. 1A American Society of Mechanical Engineers ASME, 2017.
    @inproceedings{48ec3dbd1b284b60bda57fa49094e93c,
    title = "Experimental Research on Cyclic Response, Hold Effects and Fatigue of Stainless Steel",
    abstract = "Our research on fatigue performance of stainless steel and transferability of laboratory data to nuclear power plant operational conditions continues. The focus is in quantification of time and temperature dependent damage relaxation during holds introduced within strain controlled LCF fatigue tests with niobium stabilized X6CrNiNb1810mod steel. These holds aim to simulate steady state normal operation between fatigue relevant cycles at start-up, shut-down or power changes in PWR primary circuit components, e.g. the pressurizer spray lines and surge line.Amplified cyclic hardening was observed at strain rates approaching zero at normal operation temperatures (≤325°C). Even more pronounced static hardening is consistently measured during holds in elevated temperatures (≥200°C). Beneficial effects of holds in material endurance were shown five years ago. The latest results suggest another beneficial change in component fatigue performance. In addition to improved material response, de-localization of strain is demonstrated in this paper. Our target is a thermodynamic prediction model for improved assessment of fatigue with normal operation periods. The model should quantify the life extension due to long periods in normal operation at operational temperatures.",
    author = "Jussi Solin and Jouni Alhainen and Tommi Sepp{\"a}nen and Karabaki, {H. Ertugrul} and Wolfgang Mayinger",
    year = "2017",
    month = "1",
    day = "1",
    doi = "10.1115/PVP2017-66103",
    language = "English",
    isbn = "978-0-7918-5790-8",
    volume = "1A",
    booktitle = "ASME 2017 Pressure Vessels and Piping Conference",
    publisher = "American Society of Mechanical Engineers ASME",
    address = "United States",

    }

    Solin, J, Alhainen, J, Seppänen, T, Karabaki, HE & Mayinger, W 2017, Experimental Research on Cyclic Response, Hold Effects and Fatigue of Stainless Steel. in ASME 2017 Pressure Vessels and Piping Conference. vol. 1A, PVP2017-66103, American Society of Mechanical Engineers ASME, ASME 2017 Pressure Vessels and Piping Conference, PVP 2017, Waikoloa, United States, 16/07/17. https://doi.org/10.1115/PVP2017-66103

    Experimental Research on Cyclic Response, Hold Effects and Fatigue of Stainless Steel. / Solin, Jussi; Alhainen, Jouni; Seppänen, Tommi; Karabaki, H. Ertugrul; Mayinger, Wolfgang.

    ASME 2017 Pressure Vessels and Piping Conference. Vol. 1A American Society of Mechanical Engineers ASME, 2017. PVP2017-66103.

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

    TY - GEN

    T1 - Experimental Research on Cyclic Response, Hold Effects and Fatigue of Stainless Steel

    AU - Solin, Jussi

    AU - Alhainen, Jouni

    AU - Seppänen, Tommi

    AU - Karabaki, H. Ertugrul

    AU - Mayinger, Wolfgang

    PY - 2017/1/1

    Y1 - 2017/1/1

    N2 - Our research on fatigue performance of stainless steel and transferability of laboratory data to nuclear power plant operational conditions continues. The focus is in quantification of time and temperature dependent damage relaxation during holds introduced within strain controlled LCF fatigue tests with niobium stabilized X6CrNiNb1810mod steel. These holds aim to simulate steady state normal operation between fatigue relevant cycles at start-up, shut-down or power changes in PWR primary circuit components, e.g. the pressurizer spray lines and surge line.Amplified cyclic hardening was observed at strain rates approaching zero at normal operation temperatures (≤325°C). Even more pronounced static hardening is consistently measured during holds in elevated temperatures (≥200°C). Beneficial effects of holds in material endurance were shown five years ago. The latest results suggest another beneficial change in component fatigue performance. In addition to improved material response, de-localization of strain is demonstrated in this paper. Our target is a thermodynamic prediction model for improved assessment of fatigue with normal operation periods. The model should quantify the life extension due to long periods in normal operation at operational temperatures.

    AB - Our research on fatigue performance of stainless steel and transferability of laboratory data to nuclear power plant operational conditions continues. The focus is in quantification of time and temperature dependent damage relaxation during holds introduced within strain controlled LCF fatigue tests with niobium stabilized X6CrNiNb1810mod steel. These holds aim to simulate steady state normal operation between fatigue relevant cycles at start-up, shut-down or power changes in PWR primary circuit components, e.g. the pressurizer spray lines and surge line.Amplified cyclic hardening was observed at strain rates approaching zero at normal operation temperatures (≤325°C). Even more pronounced static hardening is consistently measured during holds in elevated temperatures (≥200°C). Beneficial effects of holds in material endurance were shown five years ago. The latest results suggest another beneficial change in component fatigue performance. In addition to improved material response, de-localization of strain is demonstrated in this paper. Our target is a thermodynamic prediction model for improved assessment of fatigue with normal operation periods. The model should quantify the life extension due to long periods in normal operation at operational temperatures.

    UR - http://www.scopus.com/inward/record.url?scp=85034114037&partnerID=8YFLogxK

    U2 - 10.1115/PVP2017-66103

    DO - 10.1115/PVP2017-66103

    M3 - Conference article in proceedings

    SN - 978-0-7918-5790-8

    VL - 1A

    BT - ASME 2017 Pressure Vessels and Piping Conference

    PB - American Society of Mechanical Engineers ASME

    ER -

    Solin J, Alhainen J, Seppänen T, Karabaki HE, Mayinger W. Experimental Research on Cyclic Response, Hold Effects and Fatigue of Stainless Steel. In ASME 2017 Pressure Vessels and Piping Conference. Vol. 1A. American Society of Mechanical Engineers ASME. 2017. PVP2017-66103 https://doi.org/10.1115/PVP2017-66103