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doi:10.22028/D291-29256
Titel: | High strength nanocrystalline Cu–Co alloys with high tensile ductility |
VerfasserIn: | Bachmaier, Andrea Rathmayr, Georg B. Schmauch, Jörg Schell, Norbert Stark, Andreas de Jonge, Niels Pippan, Reinhard |
Sprache: | Englisch |
Titel: | Journal of Materials Research |
Bandnummer: | 34 |
Heft: | 1 |
Startseite: | 58 |
Endseite: | 68 |
Verlag/Plattform: | Cambridge University Press |
Erscheinungsjahr: | 2018 |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | A supersaturated single-phase Cu–26 at.% Co alloy was produced by high-pressure torsion deformation, leading to a nanocrystalline microstructure with a grain size smaller than 100 nm. The nonequilibrium solid solution decomposed during subsequent isothermal annealing. In situ high-energy X-ray diffraction was used to map changes linked to the separating phases, and the development of a nanoscale Cu–Co composite structure was observed. To gain further information about the relationship of the microstructure and the mechanical properties after phase separation, uniaxial tensile tests were conducted on as-deformed and isothermally annealed samples. Based on the in situ diffraction data, different isothermal annealing temperatures were chosen. Miniaturized tensile specimens with a round cross section were tested, and an image-based data evaluation method enabled the evaluation of true stress–strain curves and strain hardening behavior. The main results are as follows: all microstructural states showed high strength and ductility, which was achieved by a combination of strain-hardening and strain-rate hardening. |
DOI der Erstveröffentlichung: | 10.1557/jmr.2018.185 |
Link zu diesem Datensatz: | hdl:20.500.11880/28018 http://dx.doi.org/10.22028/D291-29256 |
ISSN: | 0884-2914 2044-5326 |
Datum des Eintrags: | 8-Okt-2019 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Physik |
Professur: | NT - Prof. Dr. Jürgen Eschner |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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