Influence of the strain path changes on the formability of a zinc sheet
| Autor: | A. Roatta, Javier Signorelli, M. Leonard, Fernando Schlosser, Marc Milesi, Nathalie Bozzolo |
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| Přispěvatelé: | Departamento de Ciencias e Ingeniería de la Computación [Bahía Blanca], Universidad Nacional del Sur [Argentina] (UNS), Universidad Nacional de Rosario [Santa Fe], Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET), Umicore Building Products, UMICORE, Centre de Mise en Forme des Matériaux (CEMEF), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Work (thermodynamics) Materials science chemistry.chemical_element 02 engineering and technology Zinc Industrial and Manufacturing Engineering [SPI.MAT]Engineering Sciences [physics]/Materials [SPI]Engineering Sciences [physics] 020901 industrial engineering & automation 0203 mechanical engineering Ultimate tensile strength [CHIM]Chemical Sciences Formability Composite material Crystallographic texture Strain (chemistry) Metals and Alloys Limit-strains Microstructure Computer Science Applications 020303 mechanical engineering & transports chemistry Modeling and Simulation Ceramics and Composites Formability Bi-linear strain path Deformation (engineering) Necking |
| Zdroj: | Journal of Materials Processing Technology Journal of Materials Processing Technology, Elsevier, 2019, 271, pp.101-110. ⟨10.1016/j.jmatprotec.2019.03.026⟩ |
| ISSN: | 0924-0136 |
| DOI: | 10.1016/j.jmatprotec.2019.03.026 |
| Popis: | International audience; The formability of sheet metals is frequently characterized by the forming limit curve (FLC), which is determined by applying proportional loading paths until the onset of necking. However, metal forming processes usually involve strain-path changes that can affect the limit strains. The purpose of the present work is to study the consequence of strain path changes on the formability of a 0.65 mm thick Zn-Cu-Ti sheet, by means of tests carried out in bi-linear stages. For this propose, tensile limit strains were determined by uniaxial deformation of biaxially pre-strained specimens. The FLC was first determined for six strain paths, obtained from hydraulic bulge and uniaxial tests with diverse specimen geometries. For the bi-linear strain paths, the tensile limit strains of the biaxially pre-deformed zinc sheet are significantly higher than the FLC of non pre-strained samples for the three orientations studied, revealing interdependence between the material’s formability, the loading history and microstructure evolution. |
| Databáze: | OpenAIRE |
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