Cyclic response of electrodeposited copper films. Experiments and elastic–viscoplastic mean-field modeling
| Autor: | Marion Martiny, Katarzyna Kowalczyk-Gajewska, Gautier Girard, Karol Frydrych, Sébastien Mercier |
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| Přispěvatelé: | Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Institute of Fundamental Technological Research (IPPT), Polska Akademia Nauk = Polish Academy of Sciences (PAN) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Materials science chemistry.chemical_element 02 engineering and technology Plasticity [SPI]Engineering Sciences [physics] 0203 mechanical engineering Ultimate tensile strength General Materials Science Composite material Instrumentation Viscoplasticity Tangent [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] 021001 nanoscience & nanotechnology Copper Electrodeposited copper Kinematic hardening Elasto-viscoplasticity 020303 mechanical engineering & transports Mean field theory chemistry Mechanics of Materials Self-consistent scheme Crystallite 0210 nano-technology Experiments |
| Zdroj: | Mechanics of Materials Mechanics of Materials, Elsevier, 2021, 153, pp.103685. ⟨10.1016/j.mechmat.2020.103685⟩ |
| ISSN: | 0167-6636 |
| Popis: | International audience; The goal of the present work is to identify and model the elastic–viscoplastic behavior of electrodeposited copper films under tension–compression loadings. From the experimental point of view, as proposed in the literature, a film of copper is electrodeposited on both sides of an elastic compliant substrate. The overall specimen is next subjected to tensile loading–unloadings. As the substrate remains elastic, the elastic–plastic response of copper under cyclic loading is experimentally determined. A clear kinematic hardening behavior is captured. To model the mechanical response, a new elastic–viscoplastic self-consistent scheme for polycrystalline materials is proposed. The core of the model is the tangent additive interaction law proposed in Molinari (2002). The behavior of the single grain is rate dependent where kinematic hardening is accounted for in the model at the level of the slip system. The model parameters are optimized via an evolutionary algorithm by comparing the predictions to the experimental cyclic response. As a result, the overall response is predicted. In addition, the heterogeneity in plastic strain activity is estimated by the model during cyclic loading. |
| Databáze: | OpenAIRE |
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