The effect of carbon additions on creep of Fe-25 Al-5 Zr alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00448442" target="_blank" >RIV/68081723:_____/15:00448442 - 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

The effect of carbon additions on creep of Fe-25 Al-5 Zr alloy

Popis výsledku v původním jazyce

Compressive creep of alloys based on Fe-25 at. % Al-5 at. % Zr with different carbon additions (0.06, 1 and 4 at. %) was studied at temperatures from 700 to 900 °C. Stress exponents and activation energies were estimated. Comparison of the data indicatesthat the strengthening by the Laves phase particles is more effective at larger stresses whereas carbides are probably more important at low strain rates at the temperature of 900 °C. Carbon additions deteriorate creep resistance at the temperature of 700 °C. This result is discussed in terms of the ratio of zirconium to carbon in the alloy. An increase of the creep resistance with increasing ratio Zr:C from 0.8 to 2 is in agreement with the behaviour observed previously in alloys with substantially lower concentrations of zirconium and carbon.

Název v anglickém jazyce

The effect of carbon additions on creep of Fe-25 Al-5 Zr alloy

Popis výsledku anglicky

Compressive creep of alloys based on Fe-25 at. % Al-5 at. % Zr with different carbon additions (0.06, 1 and 4 at. %) was studied at temperatures from 700 to 900 °C. Stress exponents and activation energies were estimated. Comparison of the data indicatesthat the strengthening by the Laves phase particles is more effective at larger stresses whereas carbides are probably more important at low strain rates at the temperature of 900 °C. Carbon additions deteriorate creep resistance at the temperature of 700 °C. This result is discussed in terms of the ratio of zirconium to carbon in the alloy. An increase of the creep resistance with increasing ratio Zr:C from 0.8 to 2 is in agreement with the behaviour observed previously in alloys with substantially lower concentrations of zirconium and carbon.

Druh

O - Ostatní výsledky

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GAP108%2F12%2F1452" target="_blank" >GAP108/12/1452: Optimalizace vysokoteplotních mechanických vlastností aluminidů železa typu Fe3Al s karbidotvornými prvky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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