The influence of post bend heat treatment on material properties and creep resistance of a pipeline bend
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25870807%3A_____%2F21%3AN0000032" target="_blank" >RIV/25870807:_____/21:N0000032 - isvavai.cz</a>
Result on the web
<a href="https://www.confer.cz/metal/2021/4157-the-influence-of-post-bend-heat-treatment-on-material-properties-and-creep-resistance-of-a-pipeline-bend" target="_blank" >https://www.confer.cz/metal/2021/4157-the-influence-of-post-bend-heat-treatment-on-material-properties-and-creep-resistance-of-a-pipeline-bend</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
The influence of post bend heat treatment on material properties and creep resistance of a pipeline bend
Original language description
The temperature of the hot bending of creep resistant steels is usually performed above the transition temperature Ac3. The steel thus undergoes a short-term austenitization followed by martensitic and/or bainitic transformation during subsequent fast cooling. Especially in the case of alloyed steels the austenitization is too short to allow dissolution of special carbides and/or nitrides, which results in the bimodal distribution of these secondary phases after bending. In order to guarantee the required material properties as well as homogeneous final microstructure after bending, it is necessary to perform the complete post bend heat treatment (PBHT) comprising of normalizing and tempering. In order to verify the influence of omitted normalization after bending on the material properties of a pipe bend made of 0.5Cr-0.5Mo-0.3V heat resistant steel, two different heat treatment modes were applied after a heat cycle simulating hot bending, the first inclusive normalizing and tempering and the second where the material was only tempered. Comprehensive analysis of mechanical properties, microstructure, substructure and creep resistance was then performed to confirm the effect of PBHT regime on material behaviour.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
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 2021
ISBN
978-80-87294-99-4
ISSN
2694-9296
e-ISSN
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Number of pages
6
Pages from-to
562-567
Publisher name
Tanger s.r.o.
Place of publication
Brno
Event location
Virtuální konference
Event date
May 26, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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