Publication detail

Ultrafine-grained Cu50(FeCo)50 immiscible alloy with excellent thermal stability

ADAM, O. JAN, V. SPOTZ, Z. ČUPERA, J. POUCHLÝ, V.

Original Title

Ultrafine-grained Cu50(FeCo)50 immiscible alloy with excellent thermal stability

Type

journal article in Web of Science

Language

English

Original Abstract

This work deals with the microstructural characterization of bulk Cu50(FeCo)50 immiscible alloy prepared by mechanical alloying and spark plasma sintering. The microstructure evolution is investigated from milled powder through sintering to annealing at temperatures of 800 °C and 980 °C for 3 h. Despite the immiscibility of Cu with Fe and Co, the FCC supersaturated solid solution was formed upon mechanical alloying. During sintering, the supersaturated solid solution decomposed into a fine microstructure composed of Cu-rich and FeCo-rich phases. However, the equilibrium microstructure was not reached even during annealing when, in addition to FCC Cu-rich phases and BCC FeCo-rich phases, FCC FeCo-rich phases with increased Cu content were present in the microstructure. The average grain size of 0.35 μm after sintering increased to 0.85 μm after annealing at a temperature corresponding to 90% of the melting point. Thus, the Cu50(FeCo)50 alloy exhibits excellent thermal stability compared to other ultrafine-grained materials, which is caused due to its immiscible nature.

Keywords

Heterogeneous materials; Immiscible alloys; Thermal stability; Mechanical alloying; Spark plasma sintering

Authors

ADAM, O.; JAN, V.; SPOTZ, Z.; ČUPERA, J.; POUCHLÝ, V.

Released

29. 10. 2021

Publisher

ELSEVIER

Location

NEW YORK

ISBN

1044-5803

Periodical

MATERIALS CHARACTERIZATION

Year of study

182

Number

111532

State

United States of America

Pages from

111532

Pages to

111532

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S1044580321006549

BibTex

@article{BUT175248,
  author="Ondřej {Adam} and Vít {Jan} and Zdeněk {Spotz} and Jan {Čupera} and Václav {Pouchlý}",
  title="Ultrafine-grained Cu50(FeCo)50 immiscible alloy with excellent thermal stability",
  journal="MATERIALS CHARACTERIZATION",
  year="2021",
  volume="182",
  number="111532",
  pages="111532--111532",
  doi="10.1016/j.matchar.2021.111532",
  issn="1044-5803",
  url="https://www.sciencedirect.com/science/article/pii/S1044580321006549"
}