Hydrogen embrittlement of TRIP steel after previous deformation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F20%3A10246274" target="_blank" >RIV/61989100:27360/20:10246274 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.confer.cz/metal/2020?page=4" target="_blank" >https://www.confer.cz/metal/2020?page=4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2020.3502" target="_blank" >10.37904/metal.2020.3502</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrogen embrittlement of TRIP steel after previous deformation

Popis výsledku v původním jazyce

The aim of the work was to obtain information about the effect of hydrogen in pre-deformed samples made of TRIP 780 steel and during deformation, when retained austenite transforms into martensite. Electrolytic hydrogenation took place both under the simultaneous action of deformation and before the tensile test itself. After hydrogenation, TRIP steel showed an increase in the yield strength and a decrease in the tensile strength. Elongation at fracture also decreased significantly by more than 20 % compared to samples that were only pre-deformed. The occurrence of deformation-induced martensite in the microstructure of TRIP steels significantly contribute to the susceptibility of these steels to hydrogen embrittlement. For samples with 5% pre-deformation, the value of the hydrogen embrittlement index was found to be 78.1 %, for samples with 10% pre-deformation it further increased to 86.2 %. From these results, hydrogen led to a degradation of mechanical properties with increasing percentage of deformation and at the same time the obtained results demonstrate a significant susceptibility of TRIP steels to hydrogen embrittlement. The article also contains results of a fractographic analysis, which also showed the occurrence of typical signs of hydrogen embrittlement, which are a quasi-cleavage fracture and fisheyes. (C) 2020 TANGER Ltd., Ostrava.

Název v anglickém jazyce

Hydrogen embrittlement of TRIP steel after previous deformation

Popis výsledku anglicky

The aim of the work was to obtain information about the effect of hydrogen in pre-deformed samples made of TRIP 780 steel and during deformation, when retained austenite transforms into martensite. Electrolytic hydrogenation took place both under the simultaneous action of deformation and before the tensile test itself. After hydrogenation, TRIP steel showed an increase in the yield strength and a decrease in the tensile strength. Elongation at fracture also decreased significantly by more than 20 % compared to samples that were only pre-deformed. The occurrence of deformation-induced martensite in the microstructure of TRIP steels significantly contribute to the susceptibility of these steels to hydrogen embrittlement. For samples with 5% pre-deformation, the value of the hydrogen embrittlement index was found to be 78.1 %, for samples with 10% pre-deformation it further increased to 86.2 %. From these results, hydrogen led to a degradation of mechanical properties with increasing percentage of deformation and at the same time the obtained results demonstrate a significant susceptibility of TRIP steels to hydrogen embrittlement. The article also contains results of a fractographic analysis, which also showed the occurrence of typical signs of hydrogen embrittlement, which are a quasi-cleavage fracture and fisheyes. (C) 2020 TANGER Ltd., Ostrava.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2020 : 29th International Conference on Metallurgy and Materials : conference proceedings : May 20-22, 2020, Brno, Czech Republic, EU

ISBN

978-80-87294-97-0

ISSN

2694-9296

e-ISSN

—

Počet stran výsledku

6

Strana od-do

452-457

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

20. 5. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—