The comparison of hydrogen diffusion characteristics in different kinds of TRIP steels

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10238307" target="_blank" >RIV/61989100:27360/17:10238307 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.metalconference.eu/files/uploads/02/METAL2017_conference_proceedings_content.pdf" target="_blank" >https://www.metalconference.eu/files/uploads/02/METAL2017_conference_proceedings_content.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The comparison of hydrogen diffusion characteristics in different kinds of TRIP steels

Popis výsledku v původním jazyce

The presented paper is devoted to the comparison of hydrogen diffusion characteristics in three different kinds of TRIP steels (with higher phosphorus content, higher aluminum content and higher silicon content). The steels were tested in as-received state after standard heat treatment including two step annealing - an intercritical annealing and an annealing in the range of bainitic transformation and in states after 5 % and 10 % tensile deformation. Steel microstructures were analyzed by light microscopy, scanning electron microscopy and X - ray diffraction. Hydrogen diffusion characteristics were electrochemically measured by Devanathan-Stachurski method with a double cell separated by steel in the form of a thin membrane. Exit sides of the steel membrane were palladium coated to prevent from hydrogen atom recombination during permeation experiments. Hydrogen diffusion coefficients were calculated using the &quot;time lag&quot; method. The lowest values of hydrogen diffusion coefficients were recorded in the TRIP steel with higher aluminum content, while the highest values were observed in the TRIP with higher phosphorus content. Phosphorus probably enhances hydrogen diffusion in steel. Very high sub-surface hydrogen concentrations were observed also in the TRIP steel with higher phosphorus content.

Název v anglickém jazyce

The comparison of hydrogen diffusion characteristics in different kinds of TRIP steels

Popis výsledku anglicky

The presented paper is devoted to the comparison of hydrogen diffusion characteristics in three different kinds of TRIP steels (with higher phosphorus content, higher aluminum content and higher silicon content). The steels were tested in as-received state after standard heat treatment including two step annealing - an intercritical annealing and an annealing in the range of bainitic transformation and in states after 5 % and 10 % tensile deformation. Steel microstructures were analyzed by light microscopy, scanning electron microscopy and X - ray diffraction. Hydrogen diffusion characteristics were electrochemically measured by Devanathan-Stachurski method with a double cell separated by steel in the form of a thin membrane. Exit sides of the steel membrane were palladium coated to prevent from hydrogen atom recombination during permeation experiments. Hydrogen diffusion coefficients were calculated using the &quot;time lag&quot; method. The lowest values of hydrogen diffusion coefficients were recorded in the TRIP steel with higher aluminum content, while the highest values were observed in the TRIP with higher phosphorus content. Phosphorus probably enhances hydrogen diffusion in steel. Very high sub-surface hydrogen concentrations were observed also in the TRIP steel with higher phosphorus content.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2017: conference proceedings : 26th International Conference on Metallurgy and Materials : (reviewed version) : May 24th-26th 2017, Hotel Voroněž I, Brno, Czech Republic, EU

ISBN

978-80-87294-79-6

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

888-893

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

24. 5. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000434346900141