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MICROSTRUCTURE STUDY OF HEAT AFFECTED ZONE OF STEEL P92 USING THERMAL CYCLES SIMULATOR

1 HAVELKA Lukáš
Co-authors:
1 MOHYLA Petr 2 KRAUS Martin
Institutions:
1 VSB - Technical University of Ostrava, Faculty of Mechanical Engineering, Ostrava, Czech Republic, EU, Lukas.havelka@vsb.cz
2 VSB - Technical University of Ostrava, Faculty of Metallurgy and Material Engineering, Ostrava, Czech Republic, EU
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
718-723
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
351 views / 153 downloads
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Abstract

Martensitic heat-resistant steel P92 belongs to very progressive group of 9-12% Cr steels modified with vanadium and niobium, with controlled boron and nitrogen content. P92 has got excellent creep properties and it is used very often to build the most exposed parts of supercritical units in steam power plants.The goal of this article is to compare the real welded joints with the simulated samples and to optimize the heat treatment and welding process of P92 steel. For that analysis of the microstructure with transmission electron microscopy was made. The measurement of trend of hardness along the welded joint was carried out, as well. The good accordance between the simulated samples and real welded joints were found.

Keywords: Thermal cycles simulator; steel P92; microstructure; heat-affected zone

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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