Creep resistance and microstructure evolution in similar weld joints made of HR3C steel

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F18%3AN0000072" target="_blank" >RIV/26722445:_____/18:N0000072 - isvavai.cz</a>
Alternative codes found
RIV/25870807:_____/18:N0000006
Result on the web
<a href="https://www.confer.cz/metal/2018/1207-creep-resistance-and-microstructure-evolution-in-similar-weld-joints-made-of-hr3c-steel" target="_blank" >https://www.confer.cz/metal/2018/1207-creep-resistance-and-microstructure-evolution-in-similar-weld-joints-made-of-hr3c-steel</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Creep resistance and microstructure evolution in similar weld joints made of HR3C steel
Original language description
Modern blocks of fossil fuel power plants designed for steam temperatures above 600 °C require advanced stainless steels in superheater or reheater systems. Great attention is paid to the exploitation of new steel grades with higher material properties. In the area of austenitic steels, the perspective grade is undoubtedly HR3C steel (X6CrNiNbN 25-20). In terms of the use of similar weld joints made of HR3C steel in fossil fuel power plants, detailed knowledge on creep resistance and microstructural stability of these weld joints is necessary. Similar weld joints made of HR3C steel tubes were manufactured using a combination of GTAW and SMAW welding technologies. Weld joints were studied in both the as-welded state (PW), and after post-weld heat treatment (PWHT) at 1230 °C for 15 minutes. The paper presents the results of creep rupture tests on cross-weld samples tested at 650 and 700 °C. Metallographic analysis was performed on longitudinal sections of creep ruptured samples and microhardness HV 0.5 profiles over cross-weld samples were determined. The paper analyses the preferential rupture locations of the HR3C similar weld joints in dependence on the temperature of creep exposure and applied stress.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
METAL 2018 - 27th International Conference on Metallurgy and Materials, Conference Proceedings
ISBN
978-808729484-0
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
837-842
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
May 23, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000461832200131

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