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

doi:10.4028/www.scientific.net/KEM.674.331

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ZnFe Coated 22MnB5 Steels in Direct Press Hardening: The Relationships between Coating Structure and Process Parameters
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 674ZnFe Coated 22MnB5 Steels in Direct Press...

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

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 may be processed successfully with short dwell times. For high coating weights 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.

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Periodical:

Key Engineering Materials (Volume 674)

Pages:

331-336

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.674.331

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Online since:

January 2016

Authors:

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

Keywords:

22MnB5, Boron Steel, Coating Defect, Friction, Hot Deformation, Liquid Metal Embrittlement, LME, Press Hardening, ZnFe Coating

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