Creep properties of Fe-Al based alloys with Zr and C addition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F10%3A%230001610" target="_blank" >RIV/46747885:24210/10:#0001610 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Creep properties of Fe-Al based alloys with Zr and C addition

Popis výsledku v původním jazyce

The mechanical properties of samples taken from different parts of a 650 mm long steam turbine blade forged fromFe?25Al?2Ta(in at.%)by conventional forging on acounter blow hammer were examined. The hardness, brittle-to-ductile transition temperatures (BDTT), the yield stress in compression and in tension, and the creep behaviour were studied and compared with the same material in the as-cast and heat-treated state.Though forging apparently improves the mechanical properties they are still not optimal because of a too large grain size which stems from the insufficiently refined microstructure in the cast precursors. Because some distinct features were observed during creep testing, microstructures of crept samples were investigated by scanning electronmicroscopy (SEM) and transmission electron microscopy (TEM).These investigations revealed that the increased creep resistance below 700 oC is caused by crystallographically oriented sub-micron sized precipitates of a Heuslerphase.

Název v anglickém jazyce

Creep properties of Fe-Al based alloys with Zr and C addition

Popis výsledku anglicky

The mechanical properties of samples taken from different parts of a 650 mm long steam turbine blade forged fromFe?25Al?2Ta(in at.%)by conventional forging on acounter blow hammer were examined. The hardness, brittle-to-ductile transition temperatures (BDTT), the yield stress in compression and in tension, and the creep behaviour were studied and compared with the same material in the as-cast and heat-treated state.Though forging apparently improves the mechanical properties they are still not optimal because of a too large grain size which stems from the insufficiently refined microstructure in the cast precursors. Because some distinct features were observed during creep testing, microstructures of crept samples were investigated by scanning electronmicroscopy (SEM) and transmission electron microscopy (TEM).These investigations revealed that the increased creep resistance below 700 oC is caused by crystallographically oriented sub-micron sized precipitates of a Heuslerphase.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2010: 19TH INTERNATIONAL METALLURGICAL AND MATERIALS CONFERENCE

ISBN

978-80-87294-17-8

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

TANGER LTD

Místo vydání

Ostrava

Místo konání akce

Roznov Pod Radhostem, CZECH REPUBLIC

Datum konání akce

1. 1. 2010

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000286658700159