Project detail

Structural stability of weld joints of creep resisting chrome steel and their degradation during long-term operation

Duration: 01.01.1997 — 31.12.1999

Funding resources

Czech Science Foundation - Standardní projekty

- whole funder

On the project

Description in English
Redistribution of carbon and nitrogen in the neighbourhood of homogeneous and heterogeneous weld joint: of creep resisting martensitic steel type P9l and its modiftcations can be of considerable effect on the structural stability of joints due to long term high-temperature exploitation and, consequently, also on their mechanical, corrosion and other properties. Heart of the matter of proposed project constists in the study o: simultaneous diffusion of carbon, nitrogen and selected substitution elementsin homogeneous and hetereneous weld joints of the steel P9l in the temperature interval from 848 to 973 K ( 10?3K) for period: of time ranging from 1 to 1000 h (or as much as I 0.000 h). The study of structural stability of heat affected zones, carbonised and decarbonized areas will be realized subsequently. Possibility of applying the result; obtained will be verified on real weld joints. The results can be applied in optimizing technology of welding (the choice of filler matrials, the optimalization o

Mark

GA106/97/1124

Default language

Czech

People responsible

Foret Rudolf, prof. Ing., CSc. - principal person responsible

Units

Faculty of Mechanical Engineering
- beneficiary (1997-01-01 - 1999-12-31)

Results

FORET, R., STRÁNSKÝ, K., SVOBODA, M., ZAKOPALOVÁ, K., PODSTRANSKÁ, I. Strukturní stabilita heterogenních svarových spojů oelli P91. In METAL 99 8.mezinárodní metalurgický veletrh a symposium. Ostrava, CZ: Tanger spol. s r.o. Ostrava, 1999. s. 208 ( s.)ISBN: 80-85988-38-0.
Detail

FORET, R., STRÁNSKÝ, K., KRUMPOS, J., MILLION, B., PILOUS, V. The breakdown of welded joints in service as a result of reduced structural stability. In Integrity of High-Temperature Welds. Nottingham, UK: IME-Institute of Mechanical Engineers, London, 1998. p. 216 ( p.)ISBN: 1-88058-14.
Detail

FORET, R., STRÁNSKÝ, K., PILOUS, V. Redistribuce vodíku ve svarových spojích ocelí. Část I. Svarové spoje Fe-H-C-i typu austenit/austenit. Kovové materiály, 1999, roč. 37, č. 2, s. 85-95. ISSN: 0023-432X.
Detail

FORET, R., STRÁNSKÝ, K., MILLION, B., SVOBODA, M. The Structural Stability of Heterogeneous Weld Joints of Steel P91. In Steels and Materials for Power Plants, EUROMAT - Volume 7. WILEY-VCH Weinheim-New Yor-Chichester-Brisbane-Singapore-Toronto: DGM Detsche Gesellschaft fur Materialkunde e.V., Willwey - VCH, 2000. p. 384 ( p.)ISBN: 3-527-30195-X.
Detail

FORET, R., STRÁNSKÝ, K., MILLION, B., REK, A. Redistribuce uhlíku během dlouhodobého provozu svarových spojů chromových žárupevných ocelí. Kovové materiály, 1999, roč. 37, č. 5, s. 314 ( s.)ISSN: 0023-432X.
Detail

FORET, R., KRUMPOS, J., STRÁNSKÝ, K. The influence of long-term exploitation on the mechanical properties of high-pressure casings in stean turbines. In FRAKTOGRAFIA-FRACTOGRAPHY 2000. Stará Lesná, Slovenská republika: IMR SAS Košice, 2000. p. 376 ( p.)ISBN: 80-968468-3-3.
Detail

Responsibility: Foret Rudolf, prof. Ing., CSc.