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  Microstructure evolution of a 55 wt.% Al–Zn coating on press hardening steel during rapid heating

Lee, C. W., Choi, W. S., Cho, Y. R., & De Cooman, B. C. (2015). Microstructure evolution of a 55 wt.% Al–Zn coating on press hardening steel during rapid heating. Surface and Coatings Technology, 281, 35-43. doi:10.1016/j.surfcoat.2015.09.041.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002A-3EE2-1 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-002A-3EE6-A
Genre: Journal Article

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 Creators:
Lee, Chang Wook1, Author           
Choi, Won Seok2, 3, Author           
Cho, Yeol Rae4, Author           
De Cooman, Bruno Charles2, Author           
Affiliations:
1Graduate Institute of Ferrous Technology, POSTECH, Pohang, South Korea, ou_persistent22              
2Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang, South Korea, ou_persistent22              
3Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              
4Technical Research Laboratories, POSCO, Gwangyang, South Korea, ou_persistent22              

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Free keywords: 55wt.% Al-Zn coating; Austenitization; Cathodic protection; Liquid metal induced embrittlement; Press hardening steel (PHS)
 Abstract: The surface alloying of 55 wt.% Al-Zn coated press hardening steel during a press hardening heat treatment was evaluated. Austenitization resulted in the formation of a surface layer containing FeAl and Fe2Al5. The use of an increased heating rate during the austenitization cycle resulted in a high volume fraction of Zn at FeAl grain boundaries, and the presence of Zn islands in Fe2Al5 grains. These microstructural features suppressed the high temperature oxidation and evaporation of Zn. Zn was found to provide a pronounced cathodic protection, and the alloyed coating did not cause liquid metal induced embrittlement. (C) 2015 Elsevier B.V. All rights reserved.

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Language(s): eng - English
 Dates: 2015-11-15
 Publication Status: Issued
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000366072200005
DOI: 10.1016/j.surfcoat.2015.09.041
 Degree: -

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Title: Surface and Coatings Technology
  Abbreviation : Surf. Coat. Tech.
Source Genre: Journal
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Publ. Info: Lausanne : Elsevier
Pages: - Volume / Issue: 281 Sequence Number: - Start / End Page: 35 - 43 Identifier: ISSN: 0257-8972
CoNE: https://pure.mpg.de/cone/journals/resource/954925496044