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The Changes in Structure of Steel P91 after Short Annealings
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SYSNO ASEP 0448374 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title The Changes in Structure of Steel P91 after Short Annealings Author(s) Král, Lubomír (UFM-A) RID, ORCID
Čermák, Jiří (UFM-A) RID, ORCID
Král, Petr (UFM-A) RID, ORCIDNumber of authors 3 Source Title Metal 2015: 24th International Conference on Metallurgy and Materials. - Ostrava : TANGER Ltd, 2015 - ISBN 978-80-87294-58-1 Number of pages 5 s. Publication form Medium - C Action METAL 2015 - International Conference on Metallurgy and Materials /24./ Event date 03.06.2015-05.06.2015 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords P91 ; carbides ; carbon ; precipitation Subject RIV BJ - Thermodynamics R&D Projects ED1.1.00/02.0068 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EE2.3.20.0214 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 UT WOS 000374706100116 Annotation Phase composition of the steel P91 during annealing was studied with the aim to reveal the evolution of new phases. In this paper, the precipitation was characterized using energy-dispersive X-ray spectroscopy (EDS) and electron diffraction in transmission microscopy (TEM). Only Nb-rich particles were found in the studied samples austenitized at 1423 °C for 20h and water cooled. After tempering at 673 °C for 2 h, the formation mainly M3C type carbides and after tempering at 873 °C for 2 h, the formation of M7C3 and M23C6 was observed. These structure changes play an important role for stability and also carbon diffusion. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2016
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