Publication detail

Effect of Higher Silicon Content and Heat Treatment on Structure Evolution and High-Temperature Behaviour of Fe-28Al-15Si-2Mo Alloy

ŠVEC, M. VODIČKOVÁ, V. HANUS, P. PAZOURKOVÁ PROKOPČÁKOVÁ, P. ČAMEK, L. MORAVEC, J.

Original Title

Effect of Higher Silicon Content and Heat Treatment on Structure Evolution and High-Temperature Behaviour of Fe-28Al-15Si-2Mo Alloy

Type

journal article in Web of Science

Language

English

Original Abstract

This paper describes the structure and properties of cast Fe3Al-based alloy doped with 15 at. % of silicon and 2 at. % of molybdenum. The higher content of silicon is useful for the enhancement of high-temperature mechanical properties or corrosion resistance of iron aluminides but deteriorates their workability due to increased brittleness. It was found that the presence of both alloying elements leads to an increase of values of the high-temperature yield stress in compression. The heat treatment (annealing at 800 degrees C for 100 h) used for the achievement of phase stability causes the grain coarsening, so the values of the high-temperature yield stress in compression are lower at 600 degrees C and 700 degrees C in comparison to values measured for the as-cast state. This stabilization annealing significantly improves the workability/machinability of alloy. Furthermore, the higher silicon content positively affects the values of the thermal expansion coefficient that was found to be lower in the temperature range up to 600 degrees C compared to alloys with lower content of silicon.

Keywords

Fe3Al-based iron aluminide for high-temperature applications; high-temperature yield stress; coefficient of thermal expansion

Authors

ŠVEC, M.; VODIČKOVÁ, V.; HANUS, P.; PAZOURKOVÁ PROKOPČÁKOVÁ, P.; ČAMEK, L.; MORAVEC, J.

Released

1. 6. 2021

Publisher

MDPI

Location

BASEL

ISBN

1996-1944

Periodical

Materials

Year of study

14

Number

11

State

Swiss Confederation

Pages from

3031

Pages to

3031

Pages count

12

URL

https://www.mdpi.com/1996-1944/14/11/3031

Full text in the Digital Library

http://hdl.handle.net/11012/204068

BibTex

@article{BUT176091,
  author="Martin {Švec} and Věra {Vodičková} and Pavel {Hanus} and Petra {Pazourková Prokopčáková} and Libor {Čamek} and Jaromír {Moravec}",
  title="Effect of Higher Silicon Content and Heat Treatment on Structure Evolution and High-Temperature Behaviour of Fe-28Al-15Si-2Mo Alloy",
  journal="Materials",
  year="2021",
  volume="14",
  number="11",
  pages="3031--3031",
  doi="10.3390/ma14113031",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/14/11/3031"
}