High temperature creep of Ni3Al based alloys with zirconium

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F11%3A86080908" target="_blank" >RIV/61989100:27360/11:86080908 - 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

High temperature creep of Ni3Al based alloys with zirconium

Popis výsledku v původním jazyce

This paper is focused on evaluation of structural parameters of Ni3Al based intermetallic alloy with zirconium. Composition of experimental alloys is very diverse, aluminium content is 22 and 24 at.%, and zirconium content is 1 or 2 at.%. The samples were prepared by vacuum induction casting followed by casting into graphite mould. These castings were subjected to directional solidification by Bridgman?s method with vertical arrangement. Rate of directional solidification was 20 and 50 mm/h. The basic high temperature creep characteristics were determined. The following test parameters were chosen for uninterrupted creep tests ? testing temperature of 900°C and applied nominal load of 200 MPa. The alloy with composition Ni-22Al-2Zr in directed state with the solidification rate of 20 mm/h has the rate of secondary creep differing by an order, approximately 1 x 10-8 s-1. The sample has also higher time to rupture. The structure has very important influence on high temperature mechanical

Název v anglickém jazyce

High temperature creep of Ni3Al based alloys with zirconium

Popis výsledku anglicky

This paper is focused on evaluation of structural parameters of Ni3Al based intermetallic alloy with zirconium. Composition of experimental alloys is very diverse, aluminium content is 22 and 24 at.%, and zirconium content is 1 or 2 at.%. The samples were prepared by vacuum induction casting followed by casting into graphite mould. These castings were subjected to directional solidification by Bridgman?s method with vertical arrangement. Rate of directional solidification was 20 and 50 mm/h. The basic high temperature creep characteristics were determined. The following test parameters were chosen for uninterrupted creep tests ? testing temperature of 900°C and applied nominal load of 200 MPa. The alloy with composition Ni-22Al-2Zr in directed state with the solidification rate of 20 mm/h has the rate of secondary creep differing by an order, approximately 1 x 10-8 s-1. The sample has also higher time to rupture. The structure has very important influence on high temperature mechanical

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

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

2011

Kód důvěrnosti údajů

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

Název periodika

Hutnické listy

ISSN

0018-8069

e-ISSN

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Svazek periodika

64

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

75-79

Kód UT WoS článku

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EID výsledku v databázi Scopus

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