Laser-GMA Hybrid Welding of Direct Quenched Steel in Lap Joint Configuration: A Preliminary Study

Miikka Karhu, Veli Kujanpää, Kalervo Leino, Jukka Siltanen

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

    1 Citation (Scopus)

    Abstract

    Welding experiments using laser-GMA hybrid welding of lap joint between 6.5 mm thick direct quenched Ramor 500 grade protection steel and 2 mm thick Optim 500 MC construction steel plates was carried out. The filler materials used were Union X96 and AISI 316LSi wire. Direct quenched Ramor 500 grade steel can be used e.g. as an armour plating applications because it possess excellent ballistic properties combined with high strength and hardness. However, joining of above material by welding can be challenging because of local softening at heat affected zone regions. The aim was to evaluate feasibility of hybrid welding process in joining point of view and to evaluate base and filler material weldability concerning e.g. hardness distribution across the weld cross-section. Also dilution assessments were made using EDS measurements in order to reveal how base and filler material is distributed across the weld cross-section.
    Original languageEnglish
    Title of host publicationProceedings
    Subtitle of host publication31st International Congress on Applications of Lasers & Electro-optics, ICALEO 2012
    Place of PublicationAnaheim, CA, USA
    PublisherLaser Institute of America
    Pages486-493
    ISBN (Print)978-0-9120-3596-3
    Publication statusPublished - 2012
    MoE publication typeA4 Article in a conference publication
    Event31st International Congress on Applications of Lasers & Electro-optics, ICALEO 2012 - Anaheim, CA, United States
    Duration: 23 Sep 201227 Sep 2012

    Conference

    Conference31st International Congress on Applications of Lasers & Electro-optics, ICALEO 2012
    Abbreviated titleICALEO 2012
    CountryUnited States
    CityAnaheim, CA
    Period23/09/1227/09/12

    Keywords

    • Laser GMA-hybrid welding
    • direct quenched steel
    • dilution
    • hardness profile

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