Hydrogen Embrittlement of Very High Strength Steels after Severe Hydrogen Charging

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F08%3A00019570" target="_blank" >RIV/61989100:27360/08:00019570 - 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

Hydrogen Embrittlement of Very High Strength Steels after Severe Hydrogen Charging

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-Mo-V alloyed steel (B). They were submitted to a cathodic charging in an acid solution with an addition of As2O3, acting 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 steels present diffusivity of 2.8 x 10-11 m2 x s-1 and 2.2 x 10-10 m2 x s-1. Hydrogen solubility was different in both steels, but residual hydrogen content appeared to be very low for both steels. Otherwise, tensile tests performed on hydrogenated steels showed a higher loss of ductility. Fracture surface observations suggest brittle failures: transgranular brittle failure for the steel A and intergranular brittle failure for the steel B. Resistance to the h

Název v anglickém jazyce

Hydrogen Embrittlement of Very High Strength Steels after Severe Hydrogen Charging

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-Mo-V alloyed steel (B). They were submitted to a cathodic charging in an acid solution with an addition of As2O3, acting 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 steels present diffusivity of 2.8 x 10-11 m2 x s-1 and 2.2 x 10-10 m2 x s-1. Hydrogen solubility was different in both steels, but residual hydrogen content appeared to be very low for both steels. Otherwise, tensile tests performed on hydrogenated steels showed a higher loss of ductility. Fracture surface observations suggest brittle failures: transgranular brittle failure for the steel A and intergranular brittle failure for the steel B. Resistance to the h

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

Hutnické listy

ISSN

0018-8069

e-ISSN

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Svazek periodika

61

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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