Effect of Cr and Ni on the microstructural evolution in Co-Re-Cr-Ni alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00518745" target="_blank" >RIV/61389005:_____/19:00518745 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3139/146.111855" target="_blank" >https://doi.org/10.3139/146.111855</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3139/146.111855" target="_blank" >10.3139/146.111855</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Cr and Ni on the microstructural evolution in Co-Re-Cr-Ni alloys

Popis výsledku v původním jazyce

The present study focuses on the microstructural evolution in Co-Re-Cr-Ni alloys at high temperatures. Four alloys with different Cr and Ni contents were studied. The microstructural examinations were performed using complementary methods of scanning electron microscopy, transmission electron microscopy, differential scanning calorimetry and neutron diffraction. Based on the experimental results and assisted by thermodynamic calculations, the effect of Cr and Ni on the microstructure could be identified. While both Ni and Cr, but Cr only if Ni is also present in the alloy, stabilize the fcc phase, the impacts of these elements on the sigma phase formation are different. It was found that the temperature stability of the sigma phase enhances with increasing Cr content, whereas Ni reduces the required Cr concentration for the sigma phase formation. The evaluation of the Cr and Ni effects on the microstructural evolution contributes to a fundamental understanding of the alloy behaviour and, thus, is a key aspect for successful alloy development.

Název v anglickém jazyce

Effect of Cr and Ni on the microstructural evolution in Co-Re-Cr-Ni alloys

Popis výsledku anglicky

The present study focuses on the microstructural evolution in Co-Re-Cr-Ni alloys at high temperatures. Four alloys with different Cr and Ni contents were studied. The microstructural examinations were performed using complementary methods of scanning electron microscopy, transmission electron microscopy, differential scanning calorimetry and neutron diffraction. Based on the experimental results and assisted by thermodynamic calculations, the effect of Cr and Ni on the microstructure could be identified. While both Ni and Cr, but Cr only if Ni is also present in the alloy, stabilize the fcc phase, the impacts of these elements on the sigma phase formation are different. It was found that the temperature stability of the sigma phase enhances with increasing Cr content, whereas Ni reduces the required Cr concentration for the sigma phase formation. The evaluation of the Cr and Ni effects on the microstructural evolution contributes to a fundamental understanding of the alloy behaviour and, thus, is a key aspect for successful alloy development.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

International Journal of Materials Research

ISSN

1862-5282

e-ISSN

—

Svazek periodika

110

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

1092-1104

Kód UT WoS článku

000502081400002

EID výsledku v databázi Scopus

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