Strengthening of AA5754 Aluminum Alloy by DRECE Process Followed by Annealing Response Investigation

Przemysław Snopiński; Tomasz Tański; Klaudiusz Gołombek; Stanislav Rusz; Ondřej Hilser; Tibor Donič; Paweł M Nuckowski; Marcin Benedyk

doi:10.3390/ma13020301

Strengthening of AA5754 Aluminum Alloy by DRECE Process Followed by Annealing Response Investigation

Materials (Basel). 2020 Jan 10;13(2):301. doi: 10.3390/ma13020301.

Authors

Przemysław Snopiński¹, Tomasz Tański¹, Klaudiusz Gołombek¹, Stanislav Rusz², Ondřej Hilser², Tibor Donič³, Paweł M Nuckowski¹, Marcin Benedyk⁴

Affiliations

¹ Division of Material Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, 44-100 Gliwice, Poland.
² Department of Mechanical Technology, Faculty of Mechanical Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava, Czech Republic.
³ Research Centre of University of Zilina, University of Zilina, 010 26 Zilina, Slovak Republic.
⁴ Paks'D Sp z.o.o. Strzelecka 74, 43-100 Tychy, Poland.

Abstract

In this study, a dual rolls equal channel extrusion (DRECE) process has been applied for improving the mechanical properties of the 5754 alloy. Supplementary experiments involving metallography, electron backscattered diffraction (EBSD), and XRD tests were carried out to evaluate the effect of the DRECE process. XRD analysis showed that the maximum dislocation density was achieved after six DRECE passes, which were accompanied by the formation that is typical for low-strain structures. The increasing dislocation density, as well as grain refinement throughout DRECE deformation, resulted in an increase in the mechanical properties. Annealing of the as-deformed sample resulted in grain growth and strength reduction.

Keywords: DRECE; EBSD; XRD; structure.