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MECHANICAL PROPERTIES OF P92 WELDED JOINTS MADE BY GTAW TECHNOLOGY

1 HAVELKA Lukáš
Co-authors:
1 MOHYLA Petr 2 VONTOROVÁ Jiřina
Institutions:
1 VSB - Technical University of Ostrava - Faculty of Mechanical Engineering, Ostrava, Czech Republic, lukas.havelka.st1@vsb.cz
2 VSB - Technical University of Ostrava - Faculty of Metallurgy and Materials Engineering, Ostrava, Czech Republic
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
672-677
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
407 views / 185 downloads
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Abstract

This article deals with the new results from measurement of mechanical properties of P92 welded joints. Tested specimens (welded joints of P92 steel) were prepared using GTAW technology (141). After the welding the different modes of Post Weld Heat Treatment (PWHT) were made and the values of hardness, tensile strength and impact toughness of weld metal and heat-affected zone (HAZ) were measured. The aim of the research is to find the dependence between the mode of PWHT and the mechanical properties of weld metal and heat-affected zone. This study contains mechanical properties of P92 welded joints obtained in the years 2011-2014.P92 is modern heat-resistant high-alloy steel used in thermal power plants with supercritical parameters (600 °C / 30 MPa), therefore it is necessary to find out the mode of Post Weld Heat Treatment, where the advantageous combination of mechanical properties will be achieved.

Keywords: Steel P92, Post Weld Heat Treatment, Mechanical Properties, Gas Tungsten Arc Welding

© 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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