Detection of structural changes in heat-resistant steels after heat and creep strain using elechtrochemical method

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Detection of structural changes in heat-resistant steels after heat and creep strain using elechtrochemical method

Popis výsledku v původním jazyce

This work is focused on evaluation of material changes of heat and creep strained steels Cr-Mo, Cr-W (P91, P92) using electrochemical methods. Samples were exposed at temperatures 600 - 650 °C for different times (up to 20 000 h) and by application of various strain. Structural changes were evaluated by polarization methods, structure of steels was characterized using light and scanning electron microscope. On measured polarization curves significant local peaks in the passive / transpassive area were observed. Correlation between curve characteristic parameters and time of heating was determined. It is also shown, that electrochemical method could be used for detection of structural instability and creep damage of material.

Název v anglickém jazyce

Detection of structural changes in heat-resistant steels after heat and creep strain using elechtrochemical method

Popis výsledku anglicky

This work is focused on evaluation of material changes of heat and creep strained steels Cr-Mo, Cr-W (P91, P92) using electrochemical methods. Samples were exposed at temperatures 600 - 650 °C for different times (up to 20 000 h) and by application of various strain. Structural changes were evaluated by polarization methods, structure of steels was characterized using light and scanning electron microscope. On measured polarization curves significant local peaks in the passive / transpassive area were observed. Correlation between curve characteristic parameters and time of heating was determined. It is also shown, that electrochemical method could be used for detection of structural instability and creep damage of material.

Druh

D - Stať ve sborníku

CEP obor

JK - Koroze a povrchové úpravy materiálu

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 21st International Conference on Metallurgy and Materials

ISBN

978-80-87294-29-1

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

TANGER

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

23. 5. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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