Effect of shot peening on oxidation resistance of austenitic alloys in SCW conditions

    Research output: Book/ReportReport

    Abstract

    Austenitic stainless steels are attractive candidate materials for the SCWR (Supercritical Water Reactor) concept, with long and successful history in nuclear power generation. Unfortunately their relatively high oxidation rate at estimated peak temperatures of 650 - 850°C (depending on the concept) may severely limit their use as fuel cladding material. However, it has been shown cold working of the exposed surfaces by shot peening can beneficially retard high temperature oxidation of austenitic steels. This report describes the effect of shot peening on the oxidation behavior of three commercially available austenitic steels, 316NG, 347H and 347HFG in SCW at 650°C I 25 MPa for up to 1800 h. Within the tested range, improved oxidation resistance was observed on some samples with certain shot peening parameters.
    Original languageEnglish
    PublisherVTT Technical Research Centre of Finland
    Number of pages20
    Publication statusPublished - 2014
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesVTT Research Report
    NumberVTT-R-05261-14

    Fingerprint

    Shot peening
    Oxidation resistance
    Cold working
    Oxidation
    Thermooxidation
    Austenitic stainless steel
    Nuclear energy
    Power generation
    Water
    Temperature
    austenitic steel

    Keywords

    • oxidation
    • shot peening
    • austenitic stainless steels
    • supercritical water

    Cite this

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    title = "Effect of shot peening on oxidation resistance of austenitic alloys in SCW conditions",
    abstract = "Austenitic stainless steels are attractive candidate materials for the SCWR (Supercritical Water Reactor) concept, with long and successful history in nuclear power generation. Unfortunately their relatively high oxidation rate at estimated peak temperatures of 650 - 850°C (depending on the concept) may severely limit their use as fuel cladding material. However, it has been shown cold working of the exposed surfaces by shot peening can beneficially retard high temperature oxidation of austenitic steels. This report describes the effect of shot peening on the oxidation behavior of three commercially available austenitic steels, 316NG, 347H and 347HFG in SCW at 650°C I 25 MPa for up to 1800 h. Within the tested range, improved oxidation resistance was observed on some samples with certain shot peening parameters.",
    keywords = "oxidation, shot peening, austenitic stainless steels, supercritical water",
    author = "Sami Penttil{\"a} and Aki Toivonen and Jarkko Mets{\"a}joki and Pertti Auerkari",
    note = "Project code: 77223",
    year = "2014",
    language = "English",
    series = "VTT Research Report",
    publisher = "VTT Technical Research Centre of Finland",
    number = "VTT-R-05261-14",
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    }

    Effect of shot peening on oxidation resistance of austenitic alloys in SCW conditions. / Penttilä, Sami; Toivonen, Aki; Metsäjoki, Jarkko; Auerkari, Pertti.

    VTT Technical Research Centre of Finland, 2014. 20 p. (VTT Research Report; No. VTT-R-05261-14).

    Research output: Book/ReportReport

    TY - BOOK

    T1 - Effect of shot peening on oxidation resistance of austenitic alloys in SCW conditions

    AU - Penttilä, Sami

    AU - Toivonen, Aki

    AU - Metsäjoki, Jarkko

    AU - Auerkari, Pertti

    N1 - Project code: 77223

    PY - 2014

    Y1 - 2014

    N2 - Austenitic stainless steels are attractive candidate materials for the SCWR (Supercritical Water Reactor) concept, with long and successful history in nuclear power generation. Unfortunately their relatively high oxidation rate at estimated peak temperatures of 650 - 850°C (depending on the concept) may severely limit their use as fuel cladding material. However, it has been shown cold working of the exposed surfaces by shot peening can beneficially retard high temperature oxidation of austenitic steels. This report describes the effect of shot peening on the oxidation behavior of three commercially available austenitic steels, 316NG, 347H and 347HFG in SCW at 650°C I 25 MPa for up to 1800 h. Within the tested range, improved oxidation resistance was observed on some samples with certain shot peening parameters.

    AB - Austenitic stainless steels are attractive candidate materials for the SCWR (Supercritical Water Reactor) concept, with long and successful history in nuclear power generation. Unfortunately their relatively high oxidation rate at estimated peak temperatures of 650 - 850°C (depending on the concept) may severely limit their use as fuel cladding material. However, it has been shown cold working of the exposed surfaces by shot peening can beneficially retard high temperature oxidation of austenitic steels. This report describes the effect of shot peening on the oxidation behavior of three commercially available austenitic steels, 316NG, 347H and 347HFG in SCW at 650°C I 25 MPa for up to 1800 h. Within the tested range, improved oxidation resistance was observed on some samples with certain shot peening parameters.

    KW - oxidation

    KW - shot peening

    KW - austenitic stainless steels

    KW - supercritical water

    M3 - Report

    T3 - VTT Research Report

    BT - Effect of shot peening on oxidation resistance of austenitic alloys in SCW conditions

    PB - VTT Technical Research Centre of Finland

    ER -

    Penttilä S, Toivonen A, Metsäjoki J, Auerkari P. Effect of shot peening on oxidation resistance of austenitic alloys in SCW conditions. VTT Technical Research Centre of Finland, 2014. 20 p. (VTT Research Report; No. VTT-R-05261-14).