Investigation of the influence of workpiece-side parameters on the layer formation of zinc-coated boron-manganese steel
Franz He, Marion Merklein
download PDFAbstract. The hot stamping process has been established as a technology for the production of ultrahigh-strength steel parts for safety-relevant components in lightweight construction for the automotive sector. Thanks to the reduced overall thickness combined with high tensile strength, it is possible to realize lightweight design concepts with improved crash behavior. Boron-manganese steels are usually used for this purpose. Due to initial process temperatures above 800 °C, hot stamping is considered a lubricant-free process. In addition to high friction and wear in the process, surface scaling and the need for tool repairs are the result. In light of these phenomena, hot stamping materials are coated to protect them from corrosion. Until now, aluminum-silicon-based coatings have been primarily used for the direct hot stamping route. While zinc-based coatings have so far mainly found usage in the indirect process route, they are now also become a valid alternative for the direct process route. In previous investigations, a significant influence of workpiece-side parameters on the formation of the coating during the austenitization process was found for aluminum-silicon (AlSi) coatings. In light of this, a similarly significant influence is suspected for zinc-based coatings. The parameters heating rate, furnace temperature and dwell time in the furnace and the effect on the coating formation of zinc-coated 20MnB8 during austenitization will be investigated. The resulting findings will form the basis for further experiments to investigate the influence of the parameters on friction and wear in the industry near strip drawing tests.
Keywords
Hot Stamping, Coating, 20MnB8
Published online 3/17/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Franz He, Marion Merklein, Investigation of the influence of workpiece-side parameters on the layer formation of zinc-coated boron-manganese steel, Materials Research Proceedings, Vol. 25, pp 431-438, 2023
DOI: https://doi.org/10.21741/9781644902417-53
The article was published as article 53 of the book Sheet Metal 2023
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] Hardell J, Kassfeldt E and Prakash B, 2008 Friction and wear behaviour of high strength boron steel at elevated temperatures of up to 800°C Wear 9-10 788–99. https://doi.org/10.1016/j.wear.2006.12.077
[2] Geiger M; Merklein M, 2007 Sheet Metal Forming – A New Kind of Forge for the Future KEM 9–20. https://doi.org/10.4028/www.scientific.net/KEM.344.9
[3] Lechler J, Merklein M and Geiger M, 2006 Beschreibung des mechanischen Werkstoffverhaltens beim Warumumformen höchstfester Vergütungstähle 1. Erlanger Workshop Warmblechumformung 1 13–30
[4] Karbasian H; Tekkaya A E, 2010 A review on hot stamping Journal of Materials Processing Technology 15 2103–18. https://doi.org/10.1016/j.jmatprotec.2010.07.019
[5] Autengruber R, Luckeneder G and Hassel A, W 2012 Corrosion of press-hardened galvanized steel Corrosion Science 12–19. https://doi.org/10.1016/j.corsci.2012.04.048
[6] Venema J, Hazrati J, Matthews DTA, Stegeman R A and van den Boogaard A H, 2018 The effects of temperature on friction and wear mechanisms during direct press hardening of Al-Si coated ultra-high strength steel Wear 149–55. https://doi.org/10.1016/j.wear.2018.04.006
[7] Bruschi S; Ghiotti A, 2014 Hot Stamping Comprehensive materials processing ed S. Hashmi(Amsterdam: Elsevier) pp 27–54. https://doi.org/10.1016/B978-0-08-096532-1.00303-4
[8] Jüttner S, Metallschutzgasschweißen von pressgehärteten höchstfesten Stählen mit unterschiedlichen Beschichtungskonzepten : Schlussbericht zu dem IGF-Vorhaben der Forschungsstelle(n) Otto-von-Guericke Universität Magdeburg/Institut für Werkstoff- und Fügetechnik (IWF): Otto von Guericke University Library, Magdeburg, Germany)
[9] thyssenkrupp Issue: June 2020, version 0 MBW® Product information for manganese-boron steels for hot forming, Information on: https://www.thyssenkrupp-steel.com/media/content_1/publikationen/produktinformationen/mbw/thyssenkrupp_mbw_product_information_steel_en_10-2016.pdf [26.01.2022]
[10] Dick P, Scheiker T and Mattes U, 2008 Warmumformung bei Daimler – Ein heiß diskutiertes Verfahren 3. Erlanger Workshop Warmblechumformung 41–55
[11] Olah Neto A, Verran G O, Pissolatto G C and Dutra R R, 2016 Effect of Necking Behavior and of Gap Size on the Cooling Rate in Hot Stamping Mat. Res. 5 1138–43. https://doi.org/10.1590/1980-5373-MR-2015-0654
[12] Kelsch R, Sommer A, Radlmayr K, Schwinghammer H, Faderl J, Kurz T, Luckeneder G, 2017 Hot Forming of Zinc Coated Press Hardening Steel. Characterization of Forming Behaviour and New Process Routes for Mass Production. HOT SHEET METAL FORMING of HIGH-PERFORMANCE STEEL CHS² ed M. Oldenburg, et al.) pp 337–344
[13] Wang K, Gui Z, Liu P, Wang Y and Zhang Y, 2014 Cracking Behavior of Al-Si Coating on Hot Stamping Boron Steel Sheet Procedia Engineering 1713–18. https://doi.org/10.1016/j.proeng.2014.10.218
[14] Kondratiuk J, Kuhn P, Labrenz E and Bischoff C, 2011 Zinc coatings for hot sheet metal forming: Comparison of phase evolution and microstructure during heat treatment Surface and Coatings Technology 17-18 4141–53. https://doi.org/10.1016/j.surfcoat.2011.03.002
[15] K. Knezar, T. Manzenreiter, J. Faderl, K. M. Radlmayr K, 2007 Formhärten von feuerverzinktem 22MnB5: ein stabiler und reproduzierbarer Prozess 2. Erlanger Workshop Warmblechumformung ed M. Geiger, et al.(Bamberg: Meisenbach) pp 131–148
[16] He F; Merklein M, 2021 Investigation of the impact of heat treatment on the layer formation of AlSi-coated boron-manganese steel IOP Conf. Ser.: Mater. Sci. Eng. 1 12009. https://doi.org/10.1088/1757-899X/1157/1/012009
[17] Radlmayr K.; Kelsch R.; Sommer A.; Rouet C.; Kurz T.; Faderl J, THE HOT FORMING OF GALVANIZED STEELS, Information on: https://www.voestalpine.com/division_stahl/content/download/51623/646391/file/Whitepaper-The-hot-forming-of%20galvanized-steels-voestalpine.pdf [10.10.2022]
[18] Gleeble® 3500-GTC System, Information on: https://www.gleeble.com/products/gleeble-systems/gleeble-3500.html [06.10.2021]
[19] Helmut RHODE GmbH: Technical Data Chamber Furnace ME 87/13, Information on: https://www.rohde.eu/en/industry/products/chamber-furnaces/annealing-and-hardening-furnaces/me-87/13?c=146https://www.rohde.eu/de/Pixelpdfdata/Articlepdf/id/81/onumber/IND-ME-87-13 [10.10.2022]
