Publication detail

Microstructure evolution of Cu-Fe-based immiscible alloys prepared by powder metallurgy

ADAM, O. JAN, V.

Original Title

Microstructure evolution of Cu-Fe-based immiscible alloys prepared by powder metallurgy

Type

article in a collection out of WoS and Scopus

Language

English

Original Abstract

The work is focused on the preparation of bulk immiscible Cu-Fe-based alloys by powder metallurgy. Three samples with chemical composition Cu70Fe30, Cu70Fe15Co15, and Cu50Fe25Co25 were prepared by mechanical alloying and spark plasma sintering (SPS). Microstructure evolution during sintering and the effect of Co on the resulting microstructure and hardness of the bulk samples were evaluated. Despite the immiscibility of Cu with Fe and Co, the FCC supersaturated solid solution was formed upon mechanical alloying. This supersaturated solid solution was decomposed during SPS and fine microstructure, consisting of separated BCC and FCC phases, was formed. The results showed that cobalt influenced the particle size of milled powders as the particle size of Cu70Fe30 alloy was about an order of magnitude higher compared to other alloys. Cobalt also affected the resulting microstructure of bulk samples, however, its effect on the hardness was negligible. It has been shown that powder metallurgy can be used for the preparation of bulk immiscible alloys with the fine microstructure consists of separate phases, which can be individually alloyed by the selected elements, and therefore, powder metallurgy can be considered as a suitable alternative to the more used casting.

Keywords

Immiscible alloys; Mechanical alloying, Spark plasma sintering

Authors

ADAM, O.; JAN, V.

Released

22. 9. 2021

Publisher

IOP Publishing

Location

Bristol

ISBN

1757-899X

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

1178

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

6

Pages count

6

URL

https://iopscience.iop.org/article/10.1088/1757-899X/1178/1/012001

Full text in the Digital Library

http://hdl.handle.net/11012/203068

BibTex

@inproceedings{BUT172583,
  author="Ondřej {Adam} and Vít {Jan}",
  title="Microstructure evolution of Cu-Fe-based immiscible alloys prepared by powder metallurgy",
  booktitle="6th International Conference on Recent Trends in Structural Materials (COMAT 2020) 30th November - 4th December 2020, Pilsen, Czech Republic",
  year="2021",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="1178",
  number="1",
  pages="1--6",
  publisher="IOP Publishing",
  address="Bristol",
  doi="10.1088/1757-899X/1178/1/012001",
  issn="1757-899X",
  url="https://iopscience.iop.org/article/10.1088/1757-899X/1178/1/012001"
}