Počet záznamů: 1
Influence of Long-term Annealing and Hot Bending on Creep of P92 Pipe
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SYSNO ASEP 0458366 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Influence of Long-term Annealing and Hot Bending on Creep of P92 Pipe Tvůrce(i) Král, Petr (UFM-A) RID, ORCID
Dvořák, Jiří (UFM-A) RID, ORCID
Kvapilová, Marie (UFM-A) RID, ORCID
Kuchařová, Květa (UFM-A) RID, ORCID
Sklenička, Václav (UFM-A) RID, ORCID
Svobodová, M. (CZ)
Čmakal, J. (CZ)Celkový počet autorů 7 Zdroj.dok. Acta Physica Polonica A. - : Polska Akademia Nauk - ISSN 0587-4246
Roč. 128, č. 4 (2015), s. 543-547Poč.str. 5 s. Akce ISPMA13 - International Symposium on Physics of Materials /13./ Datum konání 31.08.2014-04.09.2014 Místo konání Praha Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. PL - Polsko Klíč. slova creep ; long-term annealing ; hot bending ; P92 pipe Vědní obor RIV JG - Hutnictví, kovové materiály CEP TA02010260 GA TA ČR - Technologická agentura ČR ED1.1.00/02.0068 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFM-A - RVO:68081723 UT WOS 000366357300019 EID SCOPUS 84950281571 DOI 10.12693/APhysPolA.128.543 Anotace This work is focused on the creep behaviour of the thick-walled hot bended P92 pipe, with an outer diameter of 350 mm and wall thickness of 39 mm, in its different parts, namely in straight parts and bends. Selected creep specimens machined from axial section of pipe were thermally aged at 650 °C to simulate microstructure degradation typical for long-term service conditions. Subsequent tensile creep tests at constant load were performed at 600 °C under 140 MPa and creep behaviour of various structure states was compared. Microstructure was investigated by scanning electron microscopy equipped with electron backscatter direction. It was found that ageing at 650 °C for 10 000 h caused the significant reduction of creep resistance down to about 10% of initial state and an additional slight reduction of creep resistance after longer ageing for 20 000h. Further, creep behaviour was significantly influenced by specimen position in the extrados and intrados parts of bends. Microstructure investigation revealed that long-term annealing has negligible effect on high-angle grain boundary spacing and misorientation. By contrast, creep deformation of long-term annealed specimens led to significant decreasing in high-angle grain boundary spacing and caused a change in the misorientation distribution of boundaries. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2017
Počet záznamů: 1