EVALUATION OF MICROSTRUCTURAL STABILITY OF CREEP-RESISTANT STEELS WELD JOINTS ON THE BASIS OF A COMPUTATIONAL MODELING
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F10%3APU86954" target="_blank" >RIV/00216305:26210/10:PU86954 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
EVALUATION OF MICROSTRUCTURAL STABILITY OF CREEP-RESISTANT STEELS WELD JOINTS ON THE BASIS OF A COMPUTATIONAL MODELING
Original language description
The paper presents results of study of structural stability of creep-resistant steels P24, P22, P91 and their weld joints P24/P22 and P22/P91. The microstructural changes during annealing at temperatures of 500-900 C / 16-1000 hours were examined. Duringhigh temperature exposure of the weld joints, carbon diffuses in the direction of its chemical potential gradient and carbon enriched and carbon depleted zones are formed in the weld interface area. In case of P24/P22 joint the P22 steel is carburised,in case of P22/P91 joint, P91 steel is carburised. Redistribution of carbon also affects changes of mechanical properties in the weld interface area. Calculations of phase diagrams shape, phase composition, weight and volume fractions minor phases and temperature dependence of carbon activity were performed using the Thermo-Calc software. Software DICTRA was used for simulations of diffusion redistribution of carbon across the welds. These calculations were used for theoretical predictio
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
JJ - Other materials
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/GP106%2F07%2FP198" target="_blank" >GP106/07/P198: Experimental and theoretical investigation of chemical and phase composition of dissimilar welds of heat resistant steels</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
METAL 2010: 19TH INTERNATIONAL METALLURGICAL AND MATERIALS CONFERENCE
ISBN
978-80-87294-17-8
ISSN
—
e-ISSN
—
Number of pages
6
Pages from-to
—
Publisher name
TANGER LTD
Place of publication
Ostrava
Event location
Rožnov pod Radhočtěm
Event date
May 18, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—