Microscopic heterogeneity of plastic strain and lattice rotation in partially recrystallized copper polycrystals
2020 (English)In: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 184, p. 167-177Article in journal (Refereed) Published
Abstract [en]
Partial recrystallization of highly deformed polycrystalline aggregates creates a bimodal grain size distribution, which improves ductility while maintaining relatively high strength. In this work, the microstructure evolution during isothermal annealing of cold rolled copper samples was investigated using electron backscattered diffraction (EBSD) and the macroscopic mechanical strength of partially recrystallized samples was measured under uniaxial tension. Different models were tested in order to reproduce both the macroscopic mechanical response and the microscopic strain field inside a sample with 41% recrystallized grains loaded inside a scanning electron microscope to allow in-situ EBSD mapping. Crystal plasticity based finite element modeling (CPFEM) performed on a 2D mesh conforming to the experimental microstructure was compared to 3D predictions on an idealized model microstructure. © 2019
Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 184, p. 167-177
Keywords [en]
Cold rolling, Copper, Grain size and shape, Isothermal annealing, Metal cladding, Microstructure, Recrystallization (metallurgy), Scanning electron microscopy, Strain, Bimodal grain-size distribution, Electron back-scattered diffraction, Heterogeneity of plastic strain, Micro-structure evolutions, Partial recrystallization, Polycrystalline aggregates, Recrystallized grains, Recrystallized samples, Copper metallography
National Category
Materials Engineering
Research subject
Materials Engineering
Identifiers
URN: urn:nbn:se:kau:diva-87221DOI: 10.1016/j.ijsolstr.2019.01.024ISI: 000509816700012Scopus ID: 2-s2.0-85061632613OAI: oai:DiVA.org:kau-87221DiVA, id: diva2:1612556
2021-11-182021-11-182022-05-25Bibliographically approved