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Titolo:
X-ray investigation of carbide precipitation in 2 center dot 25Cr-1Mo steel for predicting remaining life of boiler components after extended servicein fossil fuel fired power stations
Autore:
Jayan, V; Mandal, PK; Hirani, M; Sanyal, SK;
Indirizzi:
Natl Thermal Power Corp Ltd, Ctr Res & Dev, Noida 201303, UP, India Natl Thermal Power Corp Ltd Noida UP India 201303 Noida 201303, UP, India
Titolo Testata:
MATERIALS SCIENCE AND TECHNOLOGY
fascicolo: 11, volume: 15, anno: 1999,
pagine: 1308 - 1316
SICI:
0267-0836(199911)15:11<1308:XIOCPI>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
MICROSTRUCTURAL EXAMINATION; 2.25CR-1MO STEEL; CREEP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Jayan, V Natl Thermal Power Corp Ltd, Ctr Res & Dev, A-8A,Sector 24, Noida201303, UP, India Natl Thermal Power Corp Ltd A-8A,Sector 24 Noida UP India 201303
Citazione:
V. Jayan et al., "X-ray investigation of carbide precipitation in 2 center dot 25Cr-1Mo steel for predicting remaining life of boiler components after extended servicein fossil fuel fired power stations", MATER SCI T, 15(11), 1999, pp. 1308-1316

Abstract

X-ray diffraction (XRD) studies were carried out on 2.25Cr-1Mo steel boiler tubes from a thermal policy station with an objective of developing a faster method of health assessment of this steel at elevated temperatures on aroutine basis. Carbide phase transformations in virgin and service exposedboiler tubes (up to similar to 100 000 h) were determined for plate specimens using high power X-rays. Iron and chromium rich carbides were detected by XRD at various stages of transformation towards final equilibrium. Compositional variations of equilibrium precipitate M23C6 with service life or overheating in the specimens studied were monitored by a shift in the lattice parameter. The XRD results were validated by optical and electron microscopy, hardness measurements, and particle size measurements. MST/4296.

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Documento generato il 28/11/20 alle ore 15:31:04