Publication detail

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.

Original Title

High entropy alloys (FeCoNi) 0.75 Cr 0.25-x Cu x - thermal stability and physical properties

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

HEA; Phase equilibria; DSC; Physical properties; Density; Thermal expansion; Hardness

Authors

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.

Released

23. 4. 2024

Publisher

ELSEVIER SCIENCE SA

Location

LAUSANNE

ISBN

0925-8388

Periodical

Journal of Alloys and Compounds

Year of study

993

Number

July

State

Swiss Confederation

Pages from

1

Pages to

11

Pages count

11

URL

https://www.sciencedirect.com/science/article/pii/S0925838824012155

BibTex

@article{BUT189753,
  author="BROŽ, P. and VŘEŠŤÁL, J. and SOPOUŠEK, J. and WEISS, K. and BURŠÍK, J. and BURŠÍKOVÁ, V. and ZÁDĚRA, A. and MÜLLER, P. and ČUPERA, J. and ROGL, G. and PARZER, M. and BAUER, E. and MICHOR, H. and ROGL.P.F.",
  title="High entropy alloys (FeCoNi) 0.75 Cr 0.25-x Cu x - thermal stability and physical properties",
  journal="Journal of Alloys and Compounds",
  year="2024",
  volume="993",
  number="July",
  pages="11",
  doi="10.1016/j.jallcom.2024.174628",
  issn="0925-8388",
  url="https://www.sciencedirect.com/science/article/pii/S0925838824012155"
}