Publication detail

WEDM used for machining high entropy alloys

MOURALOVÁ, K. BENEŠ, L. ZAHRADNÍČEK, R. BEDNÁŘ, J. ZÁDĚRA, A. FRIES, J. KAŇA, V.

Original Title

WEDM used for machining high entropy alloys

Type

journal article in Web of Science

Language

English

Original Abstract

Unconventional wire electrical discharge machining technology (WEDM) is a key machining process, especially for machining newly emerging materials, as there are almost no restrictions (only at least minimal electrical conductivity) in terms of demands on the mechanical properties of the workpiece or the need to develop new tool geometry. This study is the first to present an analysis of the machinability of newly developed high entropy alloys (HEA), namely FeCoCrMnNi and FeCoCrMnNiC0.2 using WEDM. The aim of this study was to find the optimal setting of machine parameters for the efficient production of parts with the required surface quality without defects. For this reason, an extensive design of experiments consisting of 66 rounds was performed, which took into account the influence of five input factors in the form of pulse off time, gap voltage, discharge current, pulse on time and wire speed on cutting speed and the quality of the machined surface and its subsurface layer. The analysis of topography, morphology, subsurface layers, chemical composition analysis (EDX) and lamella analysis using a transmission electron microscope (TEM) were performed. An optimal setting of the machine parameters was found, which enables machining of FeCoCrMnNi and FeCoCrMnNiC0.2 with the required surface quality without defects.

Keywords

WEDM; wire electrical discharge machining; high entropy alloy; design of experiment; machining parameters

Authors

MOURALOVÁ, K.; BENEŠ, L.; ZAHRADNÍČEK, R.; BEDNÁŘ, J.; ZÁDĚRA, A.; FRIES, J.; KAŇA, V.

Released

25. 10. 2020

Publisher

MDPI

Location

Švýcarská konfederace

ISBN

1996-1944

Periodical

Materials

Year of study

13

Number

21

State

Swiss Confederation

Pages from

1

Pages to

20

Pages count

20

URL

https://www.mdpi.com/1996-1944/13/21/4823

Full text in the Digital Library

http://hdl.handle.net/11012/195636

BibTex

@article{BUT165702,
  author="Kateřina {Mouralová} and Libor {Beneš} and Radim {Zahradníček} and Josef {Bednář} and Antonín {Záděra} and Jiří {Fries} and Václav {Kaňa}",
  title="WEDM used for machining high entropy alloys",
  journal="Materials",
  year="2020",
  volume="13",
  number="21",
  pages="1--20",
  doi="10.3390/ma13214823",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/13/21/4823"
}