THE INFLUENCE OF HYDROGEN EMBRITTLEMENT ON THE MECHANICAL PROPERTIES OF DUAL-PHASE STEEL DP600
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F19%3A10243569" target="_blank" >RIV/61989100:27360/19:10243569 - isvavai.cz</a>
Result on the web
<a href="https://metal2019.tanger.cz/files/uploads/02//METAL2019_Conference_Proceedings_Content.pdf" target="_blank" >https://metal2019.tanger.cz/files/uploads/02//METAL2019_Conference_Proceedings_Content.pdf</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
THE INFLUENCE OF HYDROGEN EMBRITTLEMENT ON THE MECHANICAL PROPERTIES OF DUAL-PHASE STEEL DP600
Original language description
The susceptibility to hydrogen embrittlement of a dual-phase steel DP600 with ferritic-martensitic microstructure was studied on previously hydrogenated samples by slow strain rate tensile tests (SSRT). The samples were subjected to electrolytic hydrogen charging in 0.05M sulfuric acid solution with the addition of KSCN at a current density of 1 and 5 mA/cm2 during 4, 8 and 24 hours. Due to the presence of hydrogen in the steel microstructure, a decrease of elongation at fracture from 24 % to 15 % was observed. Index of hydrogen embrittlement describing the relative change of elongation at fracture due to hydrogen was calculated as 38 % for the following hydrogen charging conditions: current density 1 mA/cm2 and time 8 hours. The index of hydrogen embrittlement decreased with increasing the hydrogenation time and the current density likely due to the formation of a corrosion layer that prevented further penetration of hydrogen into the steel. Changes of yield strength and tensile strength at a low current density were not observed, but at higher current densities, the yield strength increased by more than 40 MPa. Fracture surfaces of the tensile test bars were subjected to fractographic analysis. Transgranular ductile fracture was a predominant kind of fracture for all testing conditions, even for hydrogenated tensile bars. The proportion of quasi-cleavage fracture typical of hydrogen embrittlement was very low.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
METAL 2019 : conference proceedings : peer reviewed : 28th International Conference on Metallurgy and Materials : May 22nd-24th 2019, Hotel Voronez I, Brno, Czech Republic, EU
ISBN
978-80-87294-92-5
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
837-842
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
May 22, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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