Creep 0.5CrMoV oceli po průmyslovém použití při malých rychlostech deformace

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F09%3A00323650" target="_blank" >RIV/68081723:_____/09:00323650 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Creep of ex-service 0.5CrMoV steel at low strain rates

Popis výsledku v původním jazyce

High sensitivity helicoid spring specimen technique was used to investigate creep response of ex-service low alloy steel. The creep conditions were selected to be close to that under which the material was used, that is 833K and 34MPa. Three specimens were prepared from the segment of main steam pipeline having radial, tangential and axial orientation with respect to original pipeline axis. Results were compared to creep curves obtained on the unused generic low alloy steel under the same conditions. The ex-service steel creeps considerably faster, mainly during the transient period. Unfortunately, the chemical composition of the steel does not match its specification so it is not clear which part of the difference can be attributed to the creep damage. Some differences were observed between different specimen orientation, so the anisotropy introduced by the creep damage can be observed. More experiments are needed to determine potential contribution to the residual life assessment.

Název v anglickém jazyce

Creep of ex-service 0.5CrMoV steel at low strain rates

Popis výsledku anglicky

High sensitivity helicoid spring specimen technique was used to investigate creep response of ex-service low alloy steel. The creep conditions were selected to be close to that under which the material was used, that is 833K and 34MPa. Three specimens were prepared from the segment of main steam pipeline having radial, tangential and axial orientation with respect to original pipeline axis. Results were compared to creep curves obtained on the unused generic low alloy steel under the same conditions. The ex-service steel creeps considerably faster, mainly during the transient period. Unfortunately, the chemical composition of the steel does not match its specification so it is not clear which part of the difference can be attributed to the creep damage. Some differences were observed between different specimen orientation, so the anisotropy introduced by the creep damage can be observed. More experiments are needed to determine potential contribution to the residual life assessment.

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/1P05OC006" target="_blank" >1P05OC006: Techniky testování creepu s vysokou deformační citlivostí pro validaci konstitutivních modelů creepu</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

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

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Svazek periodika

510-511

Číslo periodika v rámci svazku

-

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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