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- Title
Hydrogen embrittlement of DP-1000 flat steel sheet: Influence of mechanical properties, specimen geometry, pre-damaging and electrolytically zinc galvanizing.
- Authors
Scharf, R.; Muhr, A.; Luckeneder, G.; Larour, P.; Mraczek, K.; Rehrl, J.; Leomann, F.; Stellnberger, K.‐H.; Faderl, J.; Mori, G.
- Abstract
Studies towards the impact of solute hydrogen on the mechanical properties of ultra-high strength sheet steel grades (UHSS) for the automotive industry have been increasingly conducted in the past years. This paper focuses on the pre-damaging of a dualphase DP-1000 automotive sheet steel, as found in the manufacturing of automotive body parts, in connection with hydrogen embrittlement. It is shown that the kind of pre-damaging of the specimens has a severe influence on the occurrence of hydrogen embrittlement. Hydrogen embrittlement resistance under corrosive conditions was determined through constant load tests. Tensile specimens, manufactured from electrolytically zinc galvanized DP-1000 steel, were immersed in a 5% sodium chloride solution. The impact of material properties, pre-damaging and specimen geometry are critically discussed. Furthermore a discussion is given about the material testing methods most suitable to indicate high or low hydrogen embrittlement resistance if constant load testing is performed.
- Subjects
SHEET-steel; HYDROGEN; STEEL corrosion; CORROSION &; anti-corrosives; MATERIALS science
- Publication
Materials & Corrosion / Werkstoffe und Korrosion, 2016, Vol 67, Issue 3, p239
- ISSN
0947-5117
- Publication type
Article
- DOI
10.1002/maco.201508434