Influence of arsenic as a hydrogenation promoter during cathodic hydrogen charging of very high strength steels

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F08%3A00019582" target="_blank" >RIV/61989100:27360/08:00019582 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of arsenic as a hydrogenation promoter during cathodic hydrogen charging of very high strength steels

Popis výsledku v původním jazyce

Hydrogen embrittlement mechanisms of two very high strength steels (VHSS) with ultimate tensile strength reaching 1000 MPa were studied in severe hydrogen charging conditions. These VHSS were a TRIP steel (A) and a Cr-V alloyed high strength steel (B). They were submitted to cathodic charging in a sulfuric acid solution (0.1 N) with an addition of 5 mg L-1 of As2O3, as a promoter of hydrogen absorption. Electrochemical permeation technique and subsequent hydrogen dosage by thermal desorption tests provided values for hydrogen diffusion characteristics. A and B present diffusivity of respectively 2.6 10-11 m2 s-1 and 2.2 10-10 m2 s-1. Blistering occurred at high charging currents, but residual hydrogen content appeared to be very low for both steels. The results can be attributed to the fine homogeneous microstructures with very few lattice defects like inclusions, impurities or microcracks that are the most potential sites for hydrogen trapping. Otherwise, tensile tests performed on hy

Název v anglickém jazyce

Influence of arsenic as a hydrogenation promoter during cathodic hydrogen charging of very high strength steels

Popis výsledku anglicky

Hydrogen embrittlement mechanisms of two very high strength steels (VHSS) with ultimate tensile strength reaching 1000 MPa were studied in severe hydrogen charging conditions. These VHSS were a TRIP steel (A) and a Cr-V alloyed high strength steel (B). They were submitted to cathodic charging in a sulfuric acid solution (0.1 N) with an addition of 5 mg L-1 of As2O3, as a promoter of hydrogen absorption. Electrochemical permeation technique and subsequent hydrogen dosage by thermal desorption tests provided values for hydrogen diffusion characteristics. A and B present diffusivity of respectively 2.6 10-11 m2 s-1 and 2.2 10-10 m2 s-1. Blistering occurred at high charging currents, but residual hydrogen content appeared to be very low for both steels. The results can be attributed to the fine homogeneous microstructures with very few lattice defects like inclusions, impurities or microcracks that are the most potential sites for hydrogen trapping. Otherwise, tensile tests performed on hy

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Zeszyty Naukowe, Mechanika

ISSN

1429-6055

e-ISSN

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Svazek periodika

92

Číslo periodika v rámci svazku

327

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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