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THE EFFECT OF SPECIMEN SIZE FOR THE P91 STEEL AT ELEVATED AND HIGH TEMPERATURES
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SYSNO ASEP 0511063 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title THE EFFECT OF SPECIMEN SIZE FOR THE P91 STEEL AT ELEVATED AND HIGH TEMPERATURES Author(s) Stratil, Luděk (UFM-A) ORCID
Šiška, Filip (UFM-A) RID, ORCID
Hadraba, Hynek (UFM-A) RID, ORCID
Fintová, Stanislava (UFM-A) ORCID
Mrna, T. (CZ)
Dlouhý, Ivo (UFM-A) RID, ORCIDNumber of authors 6 Article number V01AT01A068 Source Title PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, 2017, VOL 1A. - New York : ASME, 2017 / Crane R. ; Hojo K. ; Xu SX. ; Cipolla RC. - ISBN 978-0-7918-5790-8 Number of pages 6 s. Publication form Online - E Action ASME 2017 - Pressure Vessels and Piping Conference Event date 16.07.2017 - 20.07.2017 VEvent location Waikoloa, Hawaii Country US - United States Event type WRD Language eng - English Country US - United States Keywords FRACTURE-TOUGHNESS ; MASTER CURVE ; Ductile fracture Subject RIV JL - Materials Fatigue, Friction Mechanics OECD category Audio engineering, reliability analysis R&D Projects GJ15-21292Y GA ČR - Czech Science Foundation (CSF) LQ1601 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 UT WOS 000422810300068 EID SCOPUS 85034059628 Annotation The contribution aims to evaluate fracture toughness of the P91 steel in the ductile regime. This steel is broadly used for applications for pressure vessels and piping systems. The J-R curves were obtained using 1T, 0.5T and 0.25T CT specimens at 23 degrees C and using 0.5T and 0.25T CT specimens up to 600 degrees C. The energy normalization method for the J-R curve determination according to the ASTM E1820 was used. The resistance to crack propagation shows temperature dependence and the dynamic strain ageing effect with minimum values at 400 degrees C. Both specimen sizes 0.5T and 0.25T give a similar trend of the temperature dependence of fracture toughness. However, the size effect is observed as fracture toughness decreases with the specimen size. The results obtained are compared with the results of other authors pointing the specimen size effect and the temperature dependence of the steel. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2020
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