Detail publikace
High entropy alloys (FeCoNi) 0.75 Cr 0.25-x Cu x – thermal stability and physical properties
BROŽ, P. VŘEŠŤÁL, J. SOPOUŠEK, J. WEISS, K. BURŠÍK, J. BURŠÍKOVÁ, V. ZÁDĚRA, A. MÜLLER, P. ČUPERA, J. ROGL, G. PARZER, M. BAUER, E. MICHOR, H. ROGL.P.F.
Anglický název
High entropy alloys (FeCoNi) 0.75 Cr 0.25-x Cu x - thermal stability and physical properties
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
The paper reports on the phase stability of the (FeCoNi) 0.75 Cr 0.25-x Cu x HEA system with equimolar ratio of Fe, Co and Ni by differential scanning calorimetry (DSC) and measurements of physicochemical properties: density, electrical resistivity, Seebeck coefficient, thermal conductivity, and magnetic behaviour in a broad temperature region as well as hardness and elastic modulus at room temperature as a function of the gradual substitution of chromium by copper in a series of (FeCoNi) 0.75 Cr 0.25-x Cu x alloys with different mole fraction of Cu (x = 0, 0.05, 0.1, 0.15 and 0.2). DSC measurements showed that all alloys are thermally stable. Increasing content of Cu was found (i) to increase the formation of a fcc Cu-rich phase, (ii) to strengthen ferromagnetic interactions, resulting in rising ordered magnetic moments, as well as in growing ferromagnetic transition temperatures, and (iii) to distinctly change physical properties like electrical resistivity, thermal expansion, and mechanical properties. Experimental data regarding the phase stability are supported by CALPHAD calculations.
Anglický abstrakt
The paper reports on the phase stability of the (FeCoNi) 0.75 Cr 0.25-x Cu x HEA system with equimolar ratio of Fe, Co and Ni by differential scanning calorimetry (DSC) and measurements of physicochemical properties: density, electrical resistivity, Seebeck coefficient, thermal conductivity, and magnetic behaviour in a broad temperature region as well as hardness and elastic modulus at room temperature as a function of the gradual substitution of chromium by copper in a series of (FeCoNi) 0.75 Cr 0.25-x Cu x alloys with different mole fraction of Cu (x = 0, 0.05, 0.1, 0.15 and 0.2). DSC measurements showed that all alloys are thermally stable. Increasing content of Cu was found (i) to increase the formation of a fcc Cu-rich phase, (ii) to strengthen ferromagnetic interactions, resulting in rising ordered magnetic moments, as well as in growing ferromagnetic transition temperatures, and (iii) to distinctly change physical properties like electrical resistivity, thermal expansion, and mechanical properties. Experimental data regarding the phase stability are supported by CALPHAD calculations.
Klíčová slova anglicky
HEA; Phase equilibria; DSC; Physical properties; Density; Thermal expansion; Hardness
Vydáno
23.04.2024
Nakladatel
ELSEVIER SCIENCE SA
Místo
LAUSANNE
ISSN
0925-8388
Ročník
993
Číslo
July
Strany od–do
1–11
Počet stran
11
BIBTEX
@article{BUT189753,
author="Pavel {Brož} and Jan {Vřešťál} and Jiří {Sopoušek} and Vilma {Buršíková} and Antonín {Záděra} and Peter {Müller} and Jan {Čupera},
title="High entropy alloys (FeCoNi) 0.75 Cr 0.25-x Cu x – thermal stability and physical properties",
year="2024",
volume="993",
number="July",
month="April",
pages="1--11",
publisher="ELSEVIER SCIENCE SA",
address="LAUSANNE",
issn="0925-8388"
}