Regensburg 2025 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 9: Poster
MM 9.49: Poster
Montag, 17. März 2025, 18:30–20:30, P1
Extreme stability of CoCrFeMnNi60 multicomponent alloys after severe plastic deformation — •Lukas Musiol1, Mohan Muralikrishna Garlapati1, Shabnam Taheriniya1, Lukasz Rogal2, Sergiy Divinskiy1, Harald Rösner1, and Gerhard Wilde1 — 1Institute of Materials Physics, University of Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany — 2Institute of Metallurgy and Material Science, Polish Academy of Science, Reymonta 25 St., 30-059 Krakow, Poland
Thermal stability of a (CoCrFeMn)Ni60 multicomponent alloy is investigated using in-depth microscopic examination. The specific composition is chosen as a transition one from “high-entropy” to “concentrated alloy” behavior. Such compositional design mimics a conventional alloy design of solutes in the terminal solid solution range but in equiatomic concentrations. Along with the analyses of the homogenized samples, an analysis of compressed and rotary swaged samples was performed to investigate the influence of deformation on the phase stability. The phase stability is investigated at intermediate temperature for prolonged annealing times, which has given an in-depth understanding of the formation and growth of new phases or precipitates. Detailed microscopy analyses were performed to determine the phases and their composition. Overall, the (CoCrFeMn)Ni60 multicomponent alloy has shown a stable microstructure even after extreme deformation and after prolonged heat treatments. The phase stability results, in conjunction with deformation and microstructure, will be correlated and discussed in detail.