New generation ferritic and duplex stainless steels: Preliminary study on mechanical and in-service properties of welded joints

    Research output: Contribution to conferenceOther conference contributionScientific

    Abstract

    This pre-screening study covers two novel ferritic and one duplex stainless steel: the 17% Cr - double Nb+Ti stabilised 1.4509 and 1.4521, the latter with additional 2% Mo alloying, and the so-called "lean duplex" grade 1.4162 with 21.5% Cr - 5% Mn - 1.5% Ni - N. The materials were used as 2 mm. Welded joints were fabricated using resistance spot (RSW), gas metal arc (GMAW) and laser welding (LBW). The joints were subjected to tensile and microhardness testing, as well as microstructural analysis. Critical pitting temperature (CPT) corrosion tests were performed on both the base materials and welded joints. The weld microhardness tests did not reveal any significant softening effect due to welding operations. Comprehensive CPT data were achieved for all the base materials and their welds. Microstructural cha-racterisation revealed that retaining the desired ferrite-austenite balance in duplex laser beam welds still remains a challenge
    Original languageEnglish
    Publication statusPublished - 2012
    MoE publication typeNot Eligible
    EventNordic Welding Conference 2012, NWC2012 - Oslo, Norway
    Duration: 4 Oct 20125 Oct 2012

    Conference

    ConferenceNordic Welding Conference 2012, NWC2012
    Abbreviated titleNWC2012
    CountryNorway
    CityOslo
    Period4/10/125/10/12

    Fingerprint

    Welds
    Stainless steel
    Pitting
    Microhardness
    Gas metal arc welding
    Laser beam welding
    Alloying
    Austenite
    Laser beams
    Ferrite
    Screening
    Welding
    Corrosion
    Temperature
    Testing

    Cite this

    @conference{9289ba2b510f4297a28bfa44c54371bf,
    title = "New generation ferritic and duplex stainless steels: Preliminary study on mechanical and in-service properties of welded joints",
    abstract = "This pre-screening study covers two novel ferritic and one duplex stainless steel: the 17{\%} Cr - double Nb+Ti stabilised 1.4509 and 1.4521, the latter with additional 2{\%} Mo alloying, and the so-called {"}lean duplex{"} grade 1.4162 with 21.5{\%} Cr - 5{\%} Mn - 1.5{\%} Ni - N. The materials were used as 2 mm. Welded joints were fabricated using resistance spot (RSW), gas metal arc (GMAW) and laser welding (LBW). The joints were subjected to tensile and microhardness testing, as well as microstructural analysis. Critical pitting temperature (CPT) corrosion tests were performed on both the base materials and welded joints. The weld microhardness tests did not reveal any significant softening effect due to welding operations. Comprehensive CPT data were achieved for all the base materials and their welds. Microstructural cha-racterisation revealed that retaining the desired ferrite-austenite balance in duplex laser beam welds still remains a challenge",
    author = "Mika Sir{\'e}n",
    note = "Project code: X-WELD 79889_1.2.3.; Nordic Welding Conference 2012, NWC2012, NWC2012 ; Conference date: 04-10-2012 Through 05-10-2012",
    year = "2012",
    language = "English",

    }

    New generation ferritic and duplex stainless steels: Preliminary study on mechanical and in-service properties of welded joints. / Sirén, Mika.

    2012. Nordic Welding Conference 2012, NWC2012, Oslo, Norway.

    Research output: Contribution to conferenceOther conference contributionScientific

    TY - CONF

    T1 - New generation ferritic and duplex stainless steels: Preliminary study on mechanical and in-service properties of welded joints

    AU - Sirén, Mika

    N1 - Project code: X-WELD 79889_1.2.3.

    PY - 2012

    Y1 - 2012

    N2 - This pre-screening study covers two novel ferritic and one duplex stainless steel: the 17% Cr - double Nb+Ti stabilised 1.4509 and 1.4521, the latter with additional 2% Mo alloying, and the so-called "lean duplex" grade 1.4162 with 21.5% Cr - 5% Mn - 1.5% Ni - N. The materials were used as 2 mm. Welded joints were fabricated using resistance spot (RSW), gas metal arc (GMAW) and laser welding (LBW). The joints were subjected to tensile and microhardness testing, as well as microstructural analysis. Critical pitting temperature (CPT) corrosion tests were performed on both the base materials and welded joints. The weld microhardness tests did not reveal any significant softening effect due to welding operations. Comprehensive CPT data were achieved for all the base materials and their welds. Microstructural cha-racterisation revealed that retaining the desired ferrite-austenite balance in duplex laser beam welds still remains a challenge

    AB - This pre-screening study covers two novel ferritic and one duplex stainless steel: the 17% Cr - double Nb+Ti stabilised 1.4509 and 1.4521, the latter with additional 2% Mo alloying, and the so-called "lean duplex" grade 1.4162 with 21.5% Cr - 5% Mn - 1.5% Ni - N. The materials were used as 2 mm. Welded joints were fabricated using resistance spot (RSW), gas metal arc (GMAW) and laser welding (LBW). The joints were subjected to tensile and microhardness testing, as well as microstructural analysis. Critical pitting temperature (CPT) corrosion tests were performed on both the base materials and welded joints. The weld microhardness tests did not reveal any significant softening effect due to welding operations. Comprehensive CPT data were achieved for all the base materials and their welds. Microstructural cha-racterisation revealed that retaining the desired ferrite-austenite balance in duplex laser beam welds still remains a challenge

    M3 - Other conference contribution

    ER -