[Publication data] Analysis of Flow Processes during Micro-Coining of Cold-Worked and Nanocrystalline CuZn30 Alloy
| datacite.relation.isCitedBy | https://doi.org/10.1007/s11665-026-13961-5 | |
| dc.contributor.author | Frohnapfel , Leonie | |
| dc.contributor.author | Braun, Paul | |
| dc.contributor.author | Bruder, Enrico | |
| dc.contributor.author | Durst, Karsten | |
| dc.date.accessioned | 2026-07-13T14:24:09Z | |
| dc.date.created | 2025 | |
| dc.date.issued | 2026-07-13 | |
| dc.description | Publication data for the article "Analysis of Flow Processes during Micro-Coining of Cold-Worked and Nanocrystalline CuZn30 Alloy" by Frohnapfel et al. puiblished in Journal of Materials Engineering and Performance. Paper abstract: Nanoimprinting is a versatile technique for robust surface patterning on metallic materials at both micro- and nanoscales. While grain size is known to affect topography transfer during confined plastic flow, the underlying mechanisms remain unclear. To investigate this, nanoimprinting was conducted on nanocrystalline CuZn30, processed via High Pressure Torsion, and cold-worked CuZn30 using a diamond punch with a cavity height-to-width ratio of 2. High-resolution Transmission Electron Microscopy and Automated Crystal Orientation Mapping were used to analyze the plastic deformation mechanisms beneath and around the imprinted cavities. The tool topography is transferred to both materials as long as the grain size or subgrain size is smaller than the cavity width. Cold-worked CuZn30 shows localized stacking fault formation, twinning, subgrain fragmentation, and dislocation cell formation, particularly around larger cavities, whereas grain rotation and boundary-mediated plasticity dominate in the nanocrystalline samples. Notably, nanocrystalline CuZn30 achieves homogeneous plastic flow due to smaller grain size and absence of work hardening. These results demonstrate that a nanocrystalline microstructure is not strictly required for effective nanoimprinting. Rather, a cavity-width-to-(sub)grain-size ratio greater than one is crucial for sufficient plastic accommodation. The findings provide mechanistic insights into confined plastic deformation and underlying mechanisms at the sub-micron scale. | |
| dc.identifier.uri | https://tudatalib.ulb.tu-darmstadt.de/handle/tudatalib/5499 | |
| dc.language.iso | en | |
| dc.rights.license | CC-BY-4.0 (https://creativecommons.org/licenses/by/4.0) | |
| dc.subject | electron microscopy | |
| dc.subject | microstructure | |
| dc.subject | nanoprocessing | |
| dc.subject | plastic flow | |
| dc.subject | surface modification | |
| dc.subject | surface patterning | |
| dc.subject.classification | 4.31-04 | |
| dc.subject.ddc | 620 | |
| dc.title | [Publication data] Analysis of Flow Processes during Micro-Coining of Cold-Worked and Nanocrystalline CuZn30 Alloy | |
| dc.type | Image | |
| dc.type | Dataset | |
| person.identifier.orcid | 0000-0001-9703-0959 | |
| person.identifier.orcid | 0000-0003-1402-1286 | |
| person.identifier.orcid | 0000-0001-9893-6349 | |
| person.identifier.orcid | 0000-0002-9246-6398 | |
| tuda.agreements | true | |
| tuda.project | DFG | DU424/20-1 | Direkte und indirekt | |
| tuda.unit | TUDa |