Microstructural Evolution and Mechanical Behavior of an Al-6061 Alloy Processed by Repetitive Corrugation and Straightening
The repetitive corrugation and straightening process is a severe plastic deformation technique that is particularly suited to process metallic sheets. With this technique, it is possible to develop nano/ultrafine-grained structured materials, and therefore, to improve some mechanical properties such...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-04-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/10/4/489 |
| _version_ | 1797571204544987136 |
|---|---|
| author | Sergio Elizalde Marco Ezequiel Ignacio A. Figueroa José M. Cabrera Chedly Braham Gonzalo Gonzalez |
| author_facet | Sergio Elizalde Marco Ezequiel Ignacio A. Figueroa José M. Cabrera Chedly Braham Gonzalo Gonzalez |
| author_sort | Sergio Elizalde |
| collection | DOAJ |
| description | The repetitive corrugation and straightening process is a severe plastic deformation technique that is particularly suited to process metallic sheets. With this technique, it is possible to develop nano/ultrafine-grained structured materials, and therefore, to improve some mechanical properties such as the yield strength, ultimate tensile strength, and fatigue lifetime. In this study, an Al-6061 alloy was subjected to the repetitive corrugation and straightening process. A new corrugation die design was proposed in order to promote a heterogeneous deformation into the metallic sheet. The evolution of the mechanical properties and microstructure obtained by electron backscatter diffraction of the alloy showed a heterogeneous distribution in the grain size at the initial cycles of the repetitive corrugation and straightening process. Uniaxial tensile tests showed a significant increase in yield strength as the number of repetitive corrugation and straightening passes increased. The distribution of the plastic deformation was correlated with the hardness distribution on the surface. The hardness distribution map matched well with the heterogeneous distribution of the plastic deformation obtained by finite element simulation. A maximum average hardness (147 HV) and yield strength (385 MPa) was obtained for two repetitive corrugation and straightening cycles sample. |
| first_indexed | 2024-03-10T20:36:04Z |
| format | Article |
| id | doaj.art-a4ab6d76fbae4744959387845c61f243 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T20:36:04Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-a4ab6d76fbae4744959387845c61f2432023-11-19T21:00:35ZengMDPI AGMetals2075-47012020-04-0110448910.3390/met10040489Microstructural Evolution and Mechanical Behavior of an Al-6061 Alloy Processed by Repetitive Corrugation and StraighteningSergio Elizalde0Marco Ezequiel1Ignacio A. Figueroa2José M. Cabrera3Chedly Braham4Gonzalo Gonzalez5Departamento de Ciencia e Ingeniería de Materiales, EEBE-Universitat Politècnica de Catalunya, 08019 Barcelona, SpainInstituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Cd. Universitaria, A.P. 70-360, Coyoacán 04360, Ciudad de México, MexicoInstituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Cd. Universitaria, A.P. 70-360, Coyoacán 04360, Ciudad de México, MexicoDepartamento de Ciencia e Ingeniería de Materiales, EEBE-Universitat Politècnica de Catalunya, 08019 Barcelona, SpainLaboratoire Procédés et Ingénierie Mécanique et Matériaux, CNRS UMR 8006, ENSAM-CNAM, 151, Bd de l’Hôpital, 75013 Paris, FranceInstituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Cd. Universitaria, A.P. 70-360, Coyoacán 04360, Ciudad de México, MexicoThe repetitive corrugation and straightening process is a severe plastic deformation technique that is particularly suited to process metallic sheets. With this technique, it is possible to develop nano/ultrafine-grained structured materials, and therefore, to improve some mechanical properties such as the yield strength, ultimate tensile strength, and fatigue lifetime. In this study, an Al-6061 alloy was subjected to the repetitive corrugation and straightening process. A new corrugation die design was proposed in order to promote a heterogeneous deformation into the metallic sheet. The evolution of the mechanical properties and microstructure obtained by electron backscatter diffraction of the alloy showed a heterogeneous distribution in the grain size at the initial cycles of the repetitive corrugation and straightening process. Uniaxial tensile tests showed a significant increase in yield strength as the number of repetitive corrugation and straightening passes increased. The distribution of the plastic deformation was correlated with the hardness distribution on the surface. The hardness distribution map matched well with the heterogeneous distribution of the plastic deformation obtained by finite element simulation. A maximum average hardness (147 HV) and yield strength (385 MPa) was obtained for two repetitive corrugation and straightening cycles sample.https://www.mdpi.com/2075-4701/10/4/489Al-alloyRCSmechanical propertiesmicrostructurefinite element analysis |
| spellingShingle | Sergio Elizalde Marco Ezequiel Ignacio A. Figueroa José M. Cabrera Chedly Braham Gonzalo Gonzalez Microstructural Evolution and Mechanical Behavior of an Al-6061 Alloy Processed by Repetitive Corrugation and Straightening Metals Al-alloy RCS mechanical properties microstructure finite element analysis |
| title | Microstructural Evolution and Mechanical Behavior of an Al-6061 Alloy Processed by Repetitive Corrugation and Straightening |
| title_full | Microstructural Evolution and Mechanical Behavior of an Al-6061 Alloy Processed by Repetitive Corrugation and Straightening |
| title_fullStr | Microstructural Evolution and Mechanical Behavior of an Al-6061 Alloy Processed by Repetitive Corrugation and Straightening |
| title_full_unstemmed | Microstructural Evolution and Mechanical Behavior of an Al-6061 Alloy Processed by Repetitive Corrugation and Straightening |
| title_short | Microstructural Evolution and Mechanical Behavior of an Al-6061 Alloy Processed by Repetitive Corrugation and Straightening |
| title_sort | microstructural evolution and mechanical behavior of an al 6061 alloy processed by repetitive corrugation and straightening |
| topic | Al-alloy RCS mechanical properties microstructure finite element analysis |
| url | https://www.mdpi.com/2075-4701/10/4/489 |
| work_keys_str_mv | AT sergioelizalde microstructuralevolutionandmechanicalbehaviorofanal6061alloyprocessedbyrepetitivecorrugationandstraightening AT marcoezequiel microstructuralevolutionandmechanicalbehaviorofanal6061alloyprocessedbyrepetitivecorrugationandstraightening AT ignacioafigueroa microstructuralevolutionandmechanicalbehaviorofanal6061alloyprocessedbyrepetitivecorrugationandstraightening AT josemcabrera microstructuralevolutionandmechanicalbehaviorofanal6061alloyprocessedbyrepetitivecorrugationandstraightening AT chedlybraham microstructuralevolutionandmechanicalbehaviorofanal6061alloyprocessedbyrepetitivecorrugationandstraightening AT gonzalogonzalez microstructuralevolutionandmechanicalbehaviorofanal6061alloyprocessedbyrepetitivecorrugationandstraightening |