SPC and creep tests of type F modified chromium steel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25870807%3A_____%2F19%3AN0000057" target="_blank" >RIV/25870807:_____/19:N0000057 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.metalconference.eu/cz/sbornik-metal-2019/" target="_blank" >https://www.metalconference.eu/cz/sbornik-metal-2019/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

SPC and creep tests of type F modified chromium steel

Popis výsledku v původním jazyce

Small punch creep test (SPC) is an alternative method for obtaining information about the material properties of steels and alloys when only a limited amount of test material is available that does not make it possible to perform conventional creep and/or stress rupture tests. SPC testing can also be used for determination of the residual life of critical components of a fossil fuelled power plant. SPC method is a part of the CWA 15627 "Small Punch Test Method for Metallic Materials" published in 2007 and this method will be a part of a prepared proposal of a standard of Small Punch Testing. Similar activities are also within ASTM (ASTM WK47431 “New Practice for Small Punch Test Method for Metallic Materials”), and in Japan they have an approved SPC test standard. Although the complex stress state of the SPC tests differs considerably from the uniaxial tension in case of creep test and further changes during the test, it was shown that the same stress-temperature dependence and relationships are valid in SPC tests as in creep tests, and by using a simple load-based conversion factor between the SPC test and the creep test with the same time to rupture, the results of both test types can be integrated. This is demonstrated by an example of modified chromium steel of F-type where a comparison of creep and SPC tests results was presented, as well as the conversion factor that allows comparison of these two methods.

Název v anglickém jazyce

SPC and creep tests of type F modified chromium steel

Popis výsledku anglicky

Small punch creep test (SPC) is an alternative method for obtaining information about the material properties of steels and alloys when only a limited amount of test material is available that does not make it possible to perform conventional creep and/or stress rupture tests. SPC testing can also be used for determination of the residual life of critical components of a fossil fuelled power plant. SPC method is a part of the CWA 15627 "Small Punch Test Method for Metallic Materials" published in 2007 and this method will be a part of a prepared proposal of a standard of Small Punch Testing. Similar activities are also within ASTM (ASTM WK47431 “New Practice for Small Punch Test Method for Metallic Materials”), and in Japan they have an approved SPC test standard. Although the complex stress state of the SPC tests differs considerably from the uniaxial tension in case of creep test and further changes during the test, it was shown that the same stress-temperature dependence and relationships are valid in SPC tests as in creep tests, and by using a simple load-based conversion factor between the SPC test and the creep test with the same time to rupture, the results of both test types can be integrated. This is demonstrated by an example of modified chromium steel of F-type where a comparison of creep and SPC tests results was presented, as well as the conversion factor that allows comparison of these two methods.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/TE01020068" target="_blank" >TE01020068: Centrum výzkumu a experimentálního vývoje spolehlivé energetiky</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2019 Conference Proceedings

ISBN

978-80-87294-92-5

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

734-739

Název nakladatele

Tanger Ltd., Ostrava

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

19. 5. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

999