Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging
This research is devoted to the microstructure evolution and deformation behavior of the Al-1.2Mg-0.7Si-1.0Cu-0.1Sc-0.2Zr alloy during the isothermal multidirectional forging (MDF) in a large cumulative strain and temperature range. The structure investigation of the studied alloy revealed several p...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-12-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/13/24/13054 |
| _version_ | 1797382173820452864 |
|---|---|
| author | Andrey G. Mochugovskiy Ludmila Yu. Kaplanskaya Ahmed O. Mosleh Valeria V. Palacheva Anastasia V. Mikhaylovskaya |
| author_facet | Andrey G. Mochugovskiy Ludmila Yu. Kaplanskaya Ahmed O. Mosleh Valeria V. Palacheva Anastasia V. Mikhaylovskaya |
| author_sort | Andrey G. Mochugovskiy |
| collection | DOAJ |
| description | This research is devoted to the microstructure evolution and deformation behavior of the Al-1.2Mg-0.7Si-1.0Cu-0.1Sc-0.2Zr alloy during the isothermal multidirectional forging (MDF) in a large cumulative strain and temperature range. The structure investigation of the studied alloy revealed several phases precipitated during solidification, among which θ(Al<sub>2</sub>Cu), Q(Al<sub>5</sub>Cu<sub>2</sub>Mg<sub>8</sub>Si<sub>6</sub>), Mg<sub>2</sub>Si, Sc-bearing W(AlScCu) and V(AlSi<sub>2</sub>Sc<sub>2</sub>) phases were observed. The MDF at 150–350 °C and a maximum cumulative strain of 14.4 significantly refined grain structure providing a mean grain size of 1.2–2.1 µm. The L1<sub>2</sub> structured Al<sub>3</sub>(Sc,Zr) dispersoids with a mean size of 10 ± 1 nm were formed during two-step homogenization annealing. Due to Zener pinning of the nanoscale dispersoids and fine-grained structure, the alloy exhibited near-superplastic behavior in a temperature range of 460–500 °C and strain rate range of 2 × 10<sup>−3</sup>–1 × 10<sup>−2</sup> s<sup>−1</sup> with the maximum elongation to failure of ~300%. After a strengthening heat treatment, the forged alloy exhibited the yield strength of 326 ± 5 MPa, ultimate tensile strength of 366 ± 5 MPa, and elongation of 10 ± 3%. The hot deformation behavior was described using the Arrhenius type model. The developed model demonstrated high predictability accuracy with a maximum average absolute relative error of 6.6%. |
| first_indexed | 2024-03-08T21:01:35Z |
| format | Article |
| id | doaj.art-6a21d8c64e5a4996a52d2470c603acd2 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-08T21:01:35Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-6a21d8c64e5a4996a52d2470c603acd22023-12-22T13:50:46ZengMDPI AGApplied Sciences2076-34172023-12-0113241305410.3390/app132413054Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional ForgingAndrey G. Mochugovskiy0Ludmila Yu. Kaplanskaya1Ahmed O. Mosleh2Valeria V. Palacheva3Anastasia V. Mikhaylovskaya4Physical Metallurgy of Non-Ferrous Metals, National University of Science and Technology “MISIS,” Leninsky Prospekt, 4, 119049 Moscow, RussiaPhysical Metallurgy of Non-Ferrous Metals, National University of Science and Technology “MISIS,” Leninsky Prospekt, 4, 119049 Moscow, RussiaMechanical Engineering Department, Faculty of Engineering at Shoubra, Benha University, Cairo 11629, EgyptPhysical Metallurgy of Non-Ferrous Metals, National University of Science and Technology “MISIS,” Leninsky Prospekt, 4, 119049 Moscow, RussiaPhysical Metallurgy of Non-Ferrous Metals, National University of Science and Technology “MISIS,” Leninsky Prospekt, 4, 119049 Moscow, RussiaThis research is devoted to the microstructure evolution and deformation behavior of the Al-1.2Mg-0.7Si-1.0Cu-0.1Sc-0.2Zr alloy during the isothermal multidirectional forging (MDF) in a large cumulative strain and temperature range. The structure investigation of the studied alloy revealed several phases precipitated during solidification, among which θ(Al<sub>2</sub>Cu), Q(Al<sub>5</sub>Cu<sub>2</sub>Mg<sub>8</sub>Si<sub>6</sub>), Mg<sub>2</sub>Si, Sc-bearing W(AlScCu) and V(AlSi<sub>2</sub>Sc<sub>2</sub>) phases were observed. The MDF at 150–350 °C and a maximum cumulative strain of 14.4 significantly refined grain structure providing a mean grain size of 1.2–2.1 µm. The L1<sub>2</sub> structured Al<sub>3</sub>(Sc,Zr) dispersoids with a mean size of 10 ± 1 nm were formed during two-step homogenization annealing. Due to Zener pinning of the nanoscale dispersoids and fine-grained structure, the alloy exhibited near-superplastic behavior in a temperature range of 460–500 °C and strain rate range of 2 × 10<sup>−3</sup>–1 × 10<sup>−2</sup> s<sup>−1</sup> with the maximum elongation to failure of ~300%. After a strengthening heat treatment, the forged alloy exhibited the yield strength of 326 ± 5 MPa, ultimate tensile strength of 366 ± 5 MPa, and elongation of 10 ± 3%. The hot deformation behavior was described using the Arrhenius type model. The developed model demonstrated high predictability accuracy with a maximum average absolute relative error of 6.6%.https://www.mdpi.com/2076-3417/13/24/13054aluminum alloymultidirectional forginggrain refinementmicrostructure evolutionmechanical propertiesmathematical modelling |
| spellingShingle | Andrey G. Mochugovskiy Ludmila Yu. Kaplanskaya Ahmed O. Mosleh Valeria V. Palacheva Anastasia V. Mikhaylovskaya Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging Applied Sciences aluminum alloy multidirectional forging grain refinement microstructure evolution mechanical properties mathematical modelling |
| title | Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging |
| title_full | Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging |
| title_fullStr | Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging |
| title_full_unstemmed | Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging |
| title_short | Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging |
| title_sort | microstructure evolution and constitutive modelling of deformation behavior for al mg si cu sc zr alloy processed with isothermal multidirectional forging |
| topic | aluminum alloy multidirectional forging grain refinement microstructure evolution mechanical properties mathematical modelling |
| url | https://www.mdpi.com/2076-3417/13/24/13054 |
| work_keys_str_mv | AT andreygmochugovskiy microstructureevolutionandconstitutivemodellingofdeformationbehaviorforalmgsicusczralloyprocessedwithisothermalmultidirectionalforging AT ludmilayukaplanskaya microstructureevolutionandconstitutivemodellingofdeformationbehaviorforalmgsicusczralloyprocessedwithisothermalmultidirectionalforging AT ahmedomosleh microstructureevolutionandconstitutivemodellingofdeformationbehaviorforalmgsicusczralloyprocessedwithisothermalmultidirectionalforging AT valeriavpalacheva microstructureevolutionandconstitutivemodellingofdeformationbehaviorforalmgsicusczralloyprocessedwithisothermalmultidirectionalforging AT anastasiavmikhaylovskaya microstructureevolutionandconstitutivemodellingofdeformationbehaviorforalmgsicusczralloyprocessedwithisothermalmultidirectionalforging |