The Change of the Structure and Mechanical Properties of the Austenitic Steels after Exposure at the Critical Temperature

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26823357%3A_____%2F16%3AN0000010" target="_blank" >RIV/26823357:_____/16:N0000010 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.ttp.net/978-3-0357-1018-2/5.html" target="_blank" >http://www.ttp.net/978-3-0357-1018-2/5.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The Change of the Structure and Mechanical Properties of the Austenitic Steels after Exposure at the Critical Temperature

Popis výsledku v původním jazyce

The paper deals with the change of the structure and mechanical properties of the austenitic steels used in supercritical power industry after the exposure at the working temperature. The effect of plastic deformation applied during the bending of tubes on the mechanical properties and the structure was also studied. The positive effect of solution annealing on the structure was studied, too. The grades TP347 HFG, Super 304H and HR3C representing most widely used grades were chosen in this study. The bend radii R60, R80 and R100 were on the matter. The mechanical properties were studied using small punch tests and miniaturized tensile tests due to small wall thickness of the tubes. From the results obtained it can be concluded that the mechanical properties and the microstructure have been influenced due to even one year of exposure at the working temperature significantly. Various amount of σ-phase was found, especially on the pulled part of the bend (extrados), even when the tubes were exposed only to thermal exposure without any loading.

Název v anglickém jazyce

The Change of the Structure and Mechanical Properties of the Austenitic Steels after Exposure at the Critical Temperature

Popis výsledku anglicky

The paper deals with the change of the structure and mechanical properties of the austenitic steels used in supercritical power industry after the exposure at the working temperature. The effect of plastic deformation applied during the bending of tubes on the mechanical properties and the structure was also studied. The positive effect of solution annealing on the structure was studied, too. The grades TP347 HFG, Super 304H and HR3C representing most widely used grades were chosen in this study. The bend radii R60, R80 and R100 were on the matter. The mechanical properties were studied using small punch tests and miniaturized tensile tests due to small wall thickness of the tubes. From the results obtained it can be concluded that the mechanical properties and the microstructure have been influenced due to even one year of exposure at the working temperature significantly. Various amount of σ-phase was found, especially on the pulled part of the bend (extrados), even when the tubes were exposed only to thermal exposure without any loading.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

<a href="/cs/project/TA01010181" target="_blank" >TA01010181: Technologie ohybů trubek pro přestupní plochy přehříváků a mezipřehříváků progresivních konstrukcí kotlů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Metallography XVI

ISBN

978-3-0357-1018-2

ISSN

0255-5476

e-ISSN

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Počet stran výsledku

5

Strana od-do

330-334

Název nakladatele

Trans Tech Publicationx

Místo vydání

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Místo konání akce

Stará Lesná, Slovak Republic

Datum konání akce

20. 4. 2016

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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