ZnFe Coated 22MnB5 Steels in Direct Press Hardening: the Relationships between Coating Structure and Process Parameters

Henri Järvinen, Sanna Järn, Emmi Lepikko, Martti Järvenpää, Pasi Peura

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    Abstract

    Abstract. Two types of press hardening experiments were carried out to investigate the behavior of ZnFe coated 22MnB5 steel in direct press hardening process. The coating properties were studied using variable process temperatures and times with a flat-die and a forming tool. Coatings were
    analyzed with optical and scanning electron microscopes. The results indicated that steels that have low coating weights (40/40 and 50/50 g/m2) may be processed successfully with short dwell times. For high coating weights (70/70 and 80/80 g/m2) a significantly longer dwell time is needed. The behavior of ZnFe coating in hot press forming experiments was in line with literature and the
    findings of the flat-die experiments. Thus, the feasibility of the experimental press hardening equipment was confirmed.
    Original languageEnglish
    Pages (from-to)331 - 336
    Number of pages6
    JournalKey Engineering Materials
    Volume674
    Early online date2015
    DOIs
    Publication statusPublished - 2016
    Publication typeA1 Journal article-refereed

    Publication forum classification

    • Publication forum level 1

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