CHANGES IN CHEMICAL-COMPOSITION OF CARBIDES IN 2-CENTER-DOT-25CR-1MO POWER-PLANT STEEL .1. BAINITIS MICROSTRUCTURE

Authors
THOMSON RC BHADESHIA HKDH
Citation
Rc. Thomson et Hkdh. Bhadeshia, CHANGES IN CHEMICAL-COMPOSITION OF CARBIDES IN 2-CENTER-DOT-25CR-1MO POWER-PLANT STEEL .1. BAINITIS MICROSTRUCTURE, Materials science and technology, 10(3), 1994, pp. 193-203
Citations number
16
Categorie Soggetti
Metallurgy & Mining","Material Science
Journal title
Materials science and technology → ACNP
ISSN journal
02670836
Volume
10
Issue
3
Year of publication
1994
Pages
193 - 203
Database
ISI
SICI code
0267-0836(1994)10:3<193:CICOCI>2.0.ZU;2-3
Abstract
The microstructure of a power plant steel changes during elevated temp erature service. These changes in effect provide a built in time-tempe rature recorder which can be used in remanent life assessments. Hence, extensive studies have been undertaken of cementite composition chang es as a function of time and temperature in a 2.25Cr-1Mo steel with a fully bainitic microstructure. The results are interpreted theoretical ly using a model for the enrichment of carbides as a function of heat treatment and steel chemistry. The results confirm the validity of the model, although further work is needed to predict the onset of alloy carbide formation at the expense of cementite.