THE INFLUENCE OF LONG-TERM TEMPERATURE ON THE PROPERTIES AND STRUCTURE OF THE INCONEL 617 WELDED JOINT

1 SROKA Marek
Co-authors:
2 ZIELIŃSKI Adam 3 JONŠTA Zdeněk 3 JONŠTA Petr
Institutions:
1 SilesianUniversity of Technology, Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Gliwice, Poland, EU, marek.sroka@polsl.pl
2 Institute for Ferrous Metallurgy, Gliwice, Poland, EU, azielinski@imz.pl
3 VSB-Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava, Czech Republic, EU, zdenek.jonsta@vsb.cz, petr.jonsta@vsb.cz
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
861-866
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
7 views / 3 downloads
Abstract

The Inconel 617 alloy is used in the construction of boiler pressure elements with ultra-supercritical performance parameters. The paper presents the results of microstructure testing after 10,000 h ageing at 750 °C. Microstructure research was performed using scanning electron microscopy. The influence of ageing time on the changes in microstructure and the precipitation process in the native material, heat-affected zone and weld, which were referred to the changes in basic mechanical properties was described. The presented research results are an element of the material characteristics of the new generation alloys, which are used in design of pressure devices of steam boilers and diagnostic work during operation.

Keywords: Inconel 617, microstructure, precipitations, mechanical properties
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