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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
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" }