MICROSTRUCTURAL DEVELOPMENT DURING HIGH-TEMPERATURE CREEP OF 9-PERCENT CR STEEL

Authors
ORLOVA A BURSIK J KUCHAROVA K SKLENICKA V
Citation
A. Orlova et al., MICROSTRUCTURAL DEVELOPMENT DURING HIGH-TEMPERATURE CREEP OF 9-PERCENT CR STEEL, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 245(1), 1998, pp. 39-48
Citations number
18
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
245
Issue
1
Year of publication
1998
Pages
39 - 48
Database
ISI
SICI code
0921-5093(1998)245:1<39:MDDHCO>2.0.ZU;2-1
Abstract
The modified 9% Cr steel Type P91 is one of the materials presently em ployed in power plant pipework components. The detailed microstructura l analysis of a trial melt produced by Vitkovice Steel, Ostrava is rep orted in the present work. The microstructural evolution during creep at 873 K was investigated by means of transmission electron microscopy and computer image analysis. Two main microstructural elements of tem pered martensite ferritic steels, namely subgrains and secondary phase particles, are studied quantitatively. The influence of stress free a geing and the influence of stress under creep conditions on particle c oarsening and subgrain growth is determined. (C) 1998 Elsevier Science S.A. All rights reserved.