THE INFLUENCE OF HYDROGEN EMBRITTLEMENT ON THE MECHANICAL PROPERTIES OF DUAL-PHASE STEEL DP600
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
THE INFLUENCE OF HYDROGEN EMBRITTLEMENT ON THE MECHANICAL PROPERTIES OF DUAL-PHASE STEEL DP600
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
THE INFLUENCE OF HYDROGEN EMBRITTLEMENT ON THE MECHANICAL PROPERTIES OF DUAL-PHASE STEEL DP600
Popis výsledku anglicky
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.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
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OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
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Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
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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Počet stran výsledku
6
Strana od-do
837-842
Název nakladatele
Tanger
Místo vydání
Ostrava
Místo konání akce
Brno
Datum konání akce
22. 5. 2019
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
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