Mechanism of nanostructure formation in ball-milled Cu and Cu-3wt% Zn studied by X-ray diffraction line profile analysis
- Author(s)
- M. Samadi Khoshkhoo, S. Scudino, J. Bednarcik, A. Kauffmann, H. Bahmanpour, J. Freudenberger, R. Scattergood, M. J. Zehetbauer, C. C. Koch, J. Eckert
- Abstract
The mechanism of nanostructure formation during cryogenic and
room-temperature milling of Cu and Cu–3wt%Zn was investigated using
X-ray diffraction line profile analysis. For that, the whole powder
pattern modeling approach (WPPM) was used to analyze the evolution of
microstructural features including coherently scattering domain size,
dislocation density, and density of planar faults. It was found that for
all sets of experiments, structural decomposition is the dominant
mechanism of nanostructure formation during cryomilling. During
subsequent RT-milling, grain refinement still occurs by structural
decomposition for pure copper. On the other hand, discontinuous dynamic
recrystallization is responsible for nanostructure formation during
RT-milling of Cu–3wt%Zn. This is attributed to lower stacking-fault
energy of Cu–3wt%Zn compared to pure copper. Finally, room temperature
milling reveals the occurrence of a detwinning phenomenon.
- Organisation(s)
- Physics of Nanostructured Materials
- External organisation(s)
- Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden, Technische Universität Dresden, North Carolina State University, Deutsches Elektronen-Synchrotron DESY, University of California, Davis, Technische Universität Bergakademie Freiberg
- Journal
- Journal of Alloys and Compounds
- Volume
- 588
- Pages
- 138-143
- No. of pages
- 6
- ISSN
- 0925-8388
- DOI
- https://doi.org/10.1016/j.jallcom.2013.10.252
- Publication date
- 03-2014
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103018 Materials physics
- Keywords
- ASJC Scopus subject areas
- Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Materials Chemistry
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/mechanism-of-nanostructure-formation-in-ballmilled-cu-and-cu3wt-zn-studied-by-xray-diffraction-line-profile-analysis(d978fe14-cba0-4b4f-be1a-7bc9f08997df).html