Microstructural Stability of P23/P91 Dissimilar Welds during Creep at 500°C

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25870807%3A_____%2F14%3A%230000381" target="_blank" >RIV/25870807:_____/14:#0000381 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.scientific.net" target="_blank" >http://www.scientific.net</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.782.319" target="_blank" >10.4028/www.scientific.net/MSF.782.319</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microstructural Stability of P23/P91 Dissimilar Welds during Creep at 500°C

Popis výsledku v původním jazyce

This paper deals with microstructural stability of P23/P91 dissimilar welds during longterm creep exposure at 500°C. Detailed TEM investigations on minor phase evolution were performed on specimens after long-term creep exposure. Microstructural changesin the decarburized layer of the P23 steel were studied using EBSD and TEM. Experimental data on minor phase evolution were compared to the results of thermodynamic (Thermocalc) and kinetic (Dictra) simulations. Evolution of minor phases in the P23/P91 welds during creep at 500°C was in a good agreement with results of microstructural modelling. Partial decarburization of the P23 occurred at the expense of dissolving M7C3 phase. Microstructure of the partly decarburized zone in the P23 steel remained bainitic in all specimens investigated. In spite of the partial decarburization in the P23 steel during long?term creep exposure at 500°C, creep failures occurred in the ICHAZ of the P23 steel.

Název v anglickém jazyce

Microstructural Stability of P23/P91 Dissimilar Welds during Creep at 500°C

Popis výsledku anglicky

This paper deals with microstructural stability of P23/P91 dissimilar welds during longterm creep exposure at 500°C. Detailed TEM investigations on minor phase evolution were performed on specimens after long-term creep exposure. Microstructural changesin the decarburized layer of the P23 steel were studied using EBSD and TEM. Experimental data on minor phase evolution were compared to the results of thermodynamic (Thermocalc) and kinetic (Dictra) simulations. Evolution of minor phases in the P23/P91 welds during creep at 500°C was in a good agreement with results of microstructural modelling. Partial decarburization of the P23 occurred at the expense of dissolving M7C3 phase. Microstructure of the partly decarburized zone in the P23 steel remained bainitic in all specimens investigated. In spite of the partial decarburization in the P23 steel during long?term creep exposure at 500°C, creep failures occurred in the ICHAZ of the P23 steel.

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

<a href="/cs/project/ED0040%2F01%2F01" target="_blank" >ED0040/01/01: Regionální materiálově technologické výzkumné centrum</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Materials Science Forum

ISSN

1662-9752

e-ISSN

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Svazek periodika

782

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

5

Strana od-do

319-324

Kód UT WoS článku

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EID výsledku v databázi Scopus

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