Metalurgija, Vol. 66 No. 2, 2027.
Izvorni znanstveni članak
https://doi.org/https://doi.org/10.64486/m.66.2.1
Influence of the Dual Rolls Equal Channel Extrusion (DRECE) Process on the Microstructure and Mechanical Properties of Pure Copper
Krzysztof Wiśniewski
; Łukasiewicz Research Network – Institute of Non Ferrous Metals, 44-100 Gliwice, Poland
*
Małgorzata Musztyfaga-Staszuk
; malgorzata.musztyfaga-staszuk@polsl.pl
Wojciech Głuchowski
; Łukasiewicz Research Network – Institute of Non Ferrous Metals, 44-100 Gliwice, Poland
Stanislav Rusz
; VSB-Technical University of Ostrava, 708 00 Ostrava-Poruba, Czech Republic
Marek Łagoda
; Łukasiewicz Research Network – Institute of Non Ferrous Metals, 44-100 Gliwice, Poland
Zbigniew Rdzawski
; Łukasiewicz Research Network – Institute of Non Ferrous Metals, 44-100 Gliwice, Poland
Klaudiusz Gołombek
; Silesian University of Technology, Faculty of Mechanical Technology, Materials Investigating Laboratory, 44-100 Gliwice, Poland
Radek Čada
; VSB-Technical University of Ostrava, 708 00 Ostrava-Poruba, Czech Republic
* Dopisni autor.
Sažetak
The paper presents the research results on the influence of the parameters of the Dual Rolls Equal Channel Extrusion (DRECE) process on the microstructure and mechanical properties of pure copper. The research was conducted for two vari-ants of the DRECE channel geometry - with extrusion angles of 103° and 98°. Mi-crostructure observations were performed using optical and electron microscopy with backscattered electron diffraction (EBSD). Mechanical properties were deter-mined based on Vickers hardness measurements and tensile tests. The results showed that intense changes in mechanical properties occurred during the first DRECE pass, while subsequent passes led to further moderate strengthening. The values of yield strength (YS) and ultimate tensile strength (UTS) for both DRECE angles were characterized by low anisotropy. The results of the mechanical prop-erty tests indicate that, for pure copper, a lower extrusion angle provides higher ductility at comparable YS and UTS values. EBSD analysis showed noticeable mi-crostructure segmentation and an increase in the proportion of fine grains. IPF maps showed a varied crystallographic orientation after DRECE, with no tendency to form a distinct texture direction.
Ključne riječi
Hrčak ID:
352095
URI
Datum izdavanja:
1.4.2027.
Posjeta: 0 *