Microstructure and phase analysis of 0.5Cr-0.5Mo-0.25V creep-resistant steels after long-term service

0376006 - ÚFM 2012 RIV CZ eng J - Článek v odborném periodiku
Výrostková, A. - Svoboda, Milan - Homolová, V. - Falat, L. - Kepič, J.
Microstructure and phase analysis of 0.5Cr-0.5Mo-0.25V creep-resistant steels after long-term service.
Chemické listy. Roč. 105, - (2011), s. 452-454. ISSN 0009-2770. E-ISSN 1213-7103
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: low-alloy steels * microstructure * phase analysis
Kód oboru RIV: JG - Hutnictví, kovové materiály
Impakt faktor: 0.529, rok: 2011

The work characterizes the microstructure and phase analysis of the precipitates present in six low-alloy 0.5Cr- 0.5Mo-0.25V creep-resistant steels after long-term service. Four samples were from main steam piping and two samples from re-heat pipe-work. Chemical analysis and identification of the precipitates were carried out by energy dispersive Xray spectroscopy (EDXS) and selected area electron diffraction (SED), respectively. Thermodynamic calculations for the studied 0.5Cr-0.5Mo-0.25V steels were performed by software Thermo-Calc. The steels in equilibrium state consist of ferrite, MX, Cr-rich M7C3 or M23C6 and Mo2C phases.
Trvalý link: http://hdl.handle.net/11104/0208523