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COMPARISON OF P92 STEEL FATIQUE TEST RESULTS IN RELATION TO SPECIMEN SIZE AND MANUFACTURING

1,2 BUNDA Zbyněk
Co-authors:
1,2 VOLÁK Josef
Institutions:
1 University of West Bohemia, Faculty of Mechanical Engineering, Department of Material Science and Engineering Metallurgy, Pilsen, Czech Republic, EU
2 Research and Testing Institute Pilsen Ltd., Pilsen, Czech Republijc, EU
Conference:
23rd International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 21 - 23, 2014
Proceedings:
Proceedings 23rd International Conference on Metallurgy and Materials
Pages:
623-628
ISBN:
978-80-87294-52-9
ISSN:
2694-9296
Published:
18th June 2014
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
301 views / 131 downloads
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Abstract

This paper describes the fatigue properties of the steel P92. This material is widely used in the energy industry, especially for pipes and pipe bends of supercritical steam turbines. Steel P92 is alloyed with 2 % of tungsten compared to steel P91. This increases a creep strenght of the material. It is possible to reduce wall thickness of the P92 pipe up to about 20 %. Fatigue tests were carried out on standard samples and compared with SFT samples (Small Fatigue Test). Using the device SSam 2 made by company Rolce Royce, it is possible to gently remove samples from energy component without power plant shutdowns. Considering these correlations, it is possible to determine mechanical properties of the material from a small amount of removed experimental material.

Keywords: fatique, SFT, correlation

© 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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