Berlin 2024 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MM: Fachverband Metall- und Materialphysik
MM 29: Poster II
MM 29.28: Poster
Dienstag, 19. März 2024, 17:00–19:00, Poster B
Thermal stability and mechanical properties of ultrafined grain CuZn alloy processed by HPT — •Yuting Dai1, Marcel Sos2, Torsten Scherer1, Enrico Bruder2, Karsten Durst2, and Christian Kübel1 — 1Karlsruhe Institute of Technology, Institute of Nanotechnolog, Karlsruhe, Germany — 2Technische Universität Darmstadt, Fachgebiet Physikalische Metallkunde, Darmstadt, Germany
Pure Cu undergoes instability after High-Pressure Torsion (HPT) processing. This investigation aims to explore the influence of solute elements on the mechanical properties, microstructure and thermal stability of CuZn5 and CuZn30 following HPT processing at room temperature.
CuZn5 and CuZn30 underwent high-pressure torsion press under 4.5 GPa for 25 turns to get saturated grain size. Isochronal heat treatment at various temperatures was applied to assess the thermal stability of these alloys. Automated Crystal Orientation Mapping (ACOM), providing comprehensive orientation maps at nanometer resolution, was employed to evaluate grain orientation, the fraction of high-angle grain boundaries, and average grain size.
Both CuZn5 and CuZn30 exhibit greater microstructural stability compared with Cu. Notably, CuZn5 maintains hardness after annealing at 200°C, whereas CuZn30 demonstrates annealing-induced hardening.
Keywords: Automated Crystal Orientation Mapping; Thermalstability; Grain size; Mechanical properties; SeverePlastic Peformation