Analysis of the relationship between changes in mechanical properties and precipitation in SUPER 304H steel during its exposure

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F21%3AN0000081" target="_blank" >RIV/26316919:_____/21:N0000081 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1757-899X/1178/1/012019/meta" target="_blank" >https://iopscience.iop.org/article/10.1088/1757-899X/1178/1/012019/meta</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/1178/1/012019" target="_blank" >10.1088/1757-899X/1178/1/012019</a>

Result language
angličtina
Original language name
Analysis of the relationship between changes in mechanical properties and precipitation in SUPER 304H steel during its exposure
Original language description
Aim of the article is to provide properties comparison between initial state and two thermally exposed states of creep resistant steel SUPER 304H by usage of conventional and miniaturised tensile test specimens. Tests were performed at room temperature. Thermally exposed material was aged by 15 and 30 thousand hours at 675°C. This exposition which simulated accelerated operation exposition caused precipitation of intermetallic phases which affect mechanical properties like ultimate strength and elongation. The performed tests showed a decrease in elongation and ultimate strength between the first exposed state and initial state followed by partial increase of both tested values for the second exposed state. Sigma phase precipitation was confirmed for the exposed samples. The presence of the sigma phase also led to a change in the fracture morphology from full ductile (initial state) to combined ductile with the presence of brittle particle cleavage (exposed states). A comparison of the tests performed on classical and miniaturized test samples proved the possibilities of using miniaturized samples both for the basic material and for the exposed ones.
Czech name
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Czech description
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Project
<a href="/en/project/FV40166" target="_blank" >FV40166: Evaluation of degraded steels for the construction of turbines and superheaters of power boilers (for the need to predict residual service life time and local repairs)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
6th International Conference on Recent Trends in Structural Materials (COMAT 2020)
ISBN
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ISSN
1757-899X
e-ISSN
1757-8981
Number of pages
6
Pages from-to
nestránkováno
Publisher name
IOP Publishing
Place of publication
Bristol
Event location
Plzeň
Event date
Nov 30, 2020
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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