Hydrogen Embrittlement of Duplex Stainless Steel 2205 and TiPd Alloy in a Synthetic Bentonite Pore Water

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F19%3AN0000017" target="_blank" >RIV/46356088:_____/19:N0000017 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/19:43919423

Výsledek na webu

<a href="https://corrosionjournal.org/doi/10.5006/2852" target="_blank" >https://corrosionjournal.org/doi/10.5006/2852</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5006/2852" target="_blank" >10.5006/2852</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrogen Embrittlement of Duplex Stainless Steel 2205 and TiPd Alloy in a Synthetic Bentonite Pore Water

Popis výsledku v původním jazyce

This work is focused on evaluation of the susceptibility of spent nuclear fuel repository canister structural materials to hydrogen embrittlement. The materials studied in these experiments were duplex stainless steel 2205 (UNS S32205/S31803) and titanium alloy with palladium. Both hydrogen absorption kinetics and mechanical properties were studied. Both materials were tested in a solution of sulphuric acid with arsenic trioxide and in the synthetic bentonite pore water. Laboratory temperature, 40 degrees C and 90 degrees C and current densities of 0.2A/m(2), 10 A/m(2), and 100 A/m(2) were used for this work. Some samples were exposed to gamma radiation in an irradiation facility to verify the possibility of hydrogen absorption due to water radiolysis. Hydrogen absorption kinetics were evaluated by means of thermal desorption spectrometry and x-ray diffraction. Mechanical properties were observed by means of a slow strain rate tensile test, U-bend test, and impact toughness. Hydrogen absorption in the synthetic bentonite pore water is possible even at low current densities, which is proportional to galvanic corrosion. Water radiolysis did not lead to hydrogen absorption. Hydrogen absorption in titanium alloy causes titanium hydride formation, accompanied by total disintegration of the material. Lower current densities paradoxically can lead to faster hydrogen uptake at the beginning stage of charging because formation of the hydride layer is delayed. Saturation of duplex stainless steel with hydrogen leads to significant loss of ductility, but fracture is possible only under a load that is higher than the ultimate tensile strength. The loss of ductility is more significant at lower temperatures. The results obtained in this study showed that hydrogen absorption into TiPd alloy and duplex stainless steel is possible even in neutral bentonite pore solution at low current densities. Water radiolysis under low gamma irradiation does not lead to hydrogen absorption.

Název v anglickém jazyce

Hydrogen Embrittlement of Duplex Stainless Steel 2205 and TiPd Alloy in a Synthetic Bentonite Pore Water

Popis výsledku anglicky

This work is focused on evaluation of the susceptibility of spent nuclear fuel repository canister structural materials to hydrogen embrittlement. The materials studied in these experiments were duplex stainless steel 2205 (UNS S32205/S31803) and titanium alloy with palladium. Both hydrogen absorption kinetics and mechanical properties were studied. Both materials were tested in a solution of sulphuric acid with arsenic trioxide and in the synthetic bentonite pore water. Laboratory temperature, 40 degrees C and 90 degrees C and current densities of 0.2A/m(2), 10 A/m(2), and 100 A/m(2) were used for this work. Some samples were exposed to gamma radiation in an irradiation facility to verify the possibility of hydrogen absorption due to water radiolysis. Hydrogen absorption kinetics were evaluated by means of thermal desorption spectrometry and x-ray diffraction. Mechanical properties were observed by means of a slow strain rate tensile test, U-bend test, and impact toughness. Hydrogen absorption in the synthetic bentonite pore water is possible even at low current densities, which is proportional to galvanic corrosion. Water radiolysis did not lead to hydrogen absorption. Hydrogen absorption in titanium alloy causes titanium hydride formation, accompanied by total disintegration of the material. Lower current densities paradoxically can lead to faster hydrogen uptake at the beginning stage of charging because formation of the hydride layer is delayed. Saturation of duplex stainless steel with hydrogen leads to significant loss of ductility, but fracture is possible only under a load that is higher than the ultimate tensile strength. The loss of ductility is more significant at lower temperatures. The results obtained in this study showed that hydrogen absorption into TiPd alloy and duplex stainless steel is possible even in neutral bentonite pore solution at low current densities. Water radiolysis under low gamma irradiation does not lead to hydrogen absorption.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Corrosion

ISSN

0010-9312

e-ISSN

1938-159X

Svazek periodika

75

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

367-376

Kód UT WoS článku

000462158900008

EID výsledku v databázi Scopus

2-s2.0-85063503864