The effect of hot bending and thermal ageing on creep and microstructure evolution in thick-walled P92 steel pipe

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00450058" target="_blank" >RIV/68081723:_____/15:00450058 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60193247:_____/15:UJP1686D

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.msea.2015.07.072" target="_blank" >http://dx.doi.org/10.1016/j.msea.2015.07.072</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2015.07.072" target="_blank" >10.1016/j.msea.2015.07.072</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of hot bending and thermal ageing on creep and microstructure evolution in thick-walled P92 steel pipe

Popis výsledku v původním jazyce

In this work, the creep behaviour of an actual thick-walled P92 steel pipe bent was investigated at 600 and 650 °C. Creep specimens were machined from the bend at different positions. In order to simulate long-term service conditions, isothermal ageing at 650°C for 10,000 h was applied before creep exposures. The results performed on creep specimens extracted from the intrados and extrados of the pipe falling to the scatter band of the base P92 steel average line. No substantial differences were found at different positions of the pipe in the main creep characteristic. However, significant detrimental effects on the creep resistance of the pipe were found after long- term static thermal ageing due to the microstructural instability of the material. Thelarge Laves phase particles, which coarsened during ageing and creep testing, served as preferential sites for cavity nucleation leading to an accelerated tertiary stage of creep and/or premature creep fracture. Activation analysis of th

Název v anglickém jazyce

The effect of hot bending and thermal ageing on creep and microstructure evolution in thick-walled P92 steel pipe

Popis výsledku anglicky

In this work, the creep behaviour of an actual thick-walled P92 steel pipe bent was investigated at 600 and 650 °C. Creep specimens were machined from the bend at different positions. In order to simulate long-term service conditions, isothermal ageing at 650°C for 10,000 h was applied before creep exposures. The results performed on creep specimens extracted from the intrados and extrados of the pipe falling to the scatter band of the base P92 steel average line. No substantial differences were found at different positions of the pipe in the main creep characteristic. However, significant detrimental effects on the creep resistance of the pipe were found after long- term static thermal ageing due to the microstructural instability of the material. Thelarge Laves phase particles, which coarsened during ageing and creep testing, served as preferential sites for cavity nucleation leading to an accelerated tertiary stage of creep and/or premature creep fracture. Activation analysis of th

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Materials Science and Engineering A-Structural materials

ISSN

0921-5093

e-ISSN

—

Svazek periodika

644

Číslo periodika v rámci svazku

SEP

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

297-309

Kód UT WoS článku

000361258200035

EID výsledku v databázi Scopus

2-s2.0-84938231583