Dynamic recrystallization and deformation behavior of an extruded Zn-0.2 Mg biodegradable alloy
In this study, deformation behavior of a Zn alloy containing 0.2 wt. % magnesium was studied using compression tests. The compressive deformation was applied up to 1.6 true strain at a wide temperature range of −40 to 300 °C under strain rates of 0.003, 0.03 and 0.3 s−1. Microstructural observations...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422010195 |
| _version_ | 1828742890991386624 |
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| author | N. Mollaei S.M. Fatemi M.R. Aboutalebi S.H. Razavi W. Bednarczyk |
| author_facet | N. Mollaei S.M. Fatemi M.R. Aboutalebi S.H. Razavi W. Bednarczyk |
| author_sort | N. Mollaei |
| collection | DOAJ |
| description | In this study, deformation behavior of a Zn alloy containing 0.2 wt. % magnesium was studied using compression tests. The compressive deformation was applied up to 1.6 true strain at a wide temperature range of −40 to 300 °C under strain rates of 0.003, 0.03 and 0.3 s−1. Microstructural observations indicated that dynamic recrystallization occurred at the all deformation conditions. Electron back scattered diffraction results implied that continuous dynamic recrystallization (CDRX) was operative during compression through progressive lattice rotation mechanism. Moreover, the new grains are rotated not only around the c-axis but also around the prismatic and pyramidal poles. The DRX progression was discussed considering the orientation factors provided for different slip systems. After compression, the initial extrusion texture was replaced by a new one including basal plane normal to the compression axis. Also, as the deformation temperature and the strain rate decreased, the volume fraction of DRX grains increased. The flow stress of the experimental alloy was successfully modeled based on an exponential constitute equation. An activation energy of 80.5 kJ/mol was obtained for deformation, which was justified according to the cooperation of limited grain boundary migration and dynamic dislocation recovery. |
| first_indexed | 2024-04-13T01:27:57Z |
| format | Article |
| id | doaj.art-b3abe6b66a724ca38ccbcbd4b99188b4 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-13T01:27:57Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-b3abe6b66a724ca38ccbcbd4b99188b42022-12-22T03:08:35ZengElsevierJournal of Materials Research and Technology2238-78542022-07-011949694985Dynamic recrystallization and deformation behavior of an extruded Zn-0.2 Mg biodegradable alloyN. Mollaei0S.M. Fatemi1M.R. Aboutalebi2S.H. Razavi3W. Bednarczyk4School of Metallurgy and Materials Science, Iran University of Science and Technology (IUST), Narmak, Tehran 16846-1311, IranDepartment of Metallurgy and Materials Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran; Corresponding author.School of Metallurgy and Materials Science, Iran University of Science and Technology (IUST), Narmak, Tehran 16846-1311, IranSchool of Metallurgy and Materials Science, Iran University of Science and Technology (IUST), Narmak, Tehran 16846-1311, IranAGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Krakow, Poland; Warsaw University of Technology, Faculty of Materials Science and Engineering, Wołoska 141, 02-507 Warsaw, PolandIn this study, deformation behavior of a Zn alloy containing 0.2 wt. % magnesium was studied using compression tests. The compressive deformation was applied up to 1.6 true strain at a wide temperature range of −40 to 300 °C under strain rates of 0.003, 0.03 and 0.3 s−1. Microstructural observations indicated that dynamic recrystallization occurred at the all deformation conditions. Electron back scattered diffraction results implied that continuous dynamic recrystallization (CDRX) was operative during compression through progressive lattice rotation mechanism. Moreover, the new grains are rotated not only around the c-axis but also around the prismatic and pyramidal poles. The DRX progression was discussed considering the orientation factors provided for different slip systems. After compression, the initial extrusion texture was replaced by a new one including basal plane normal to the compression axis. Also, as the deformation temperature and the strain rate decreased, the volume fraction of DRX grains increased. The flow stress of the experimental alloy was successfully modeled based on an exponential constitute equation. An activation energy of 80.5 kJ/mol was obtained for deformation, which was justified according to the cooperation of limited grain boundary migration and dynamic dislocation recovery.http://www.sciencedirect.com/science/article/pii/S2238785422010195Zinc based bioalloyCompressive deformationDynamic recrystallizationFlow curveEBSD map |
| spellingShingle | N. Mollaei S.M. Fatemi M.R. Aboutalebi S.H. Razavi W. Bednarczyk Dynamic recrystallization and deformation behavior of an extruded Zn-0.2 Mg biodegradable alloy Journal of Materials Research and Technology Zinc based bioalloy Compressive deformation Dynamic recrystallization Flow curve EBSD map |
| title | Dynamic recrystallization and deformation behavior of an extruded Zn-0.2 Mg biodegradable alloy |
| title_full | Dynamic recrystallization and deformation behavior of an extruded Zn-0.2 Mg biodegradable alloy |
| title_fullStr | Dynamic recrystallization and deformation behavior of an extruded Zn-0.2 Mg biodegradable alloy |
| title_full_unstemmed | Dynamic recrystallization and deformation behavior of an extruded Zn-0.2 Mg biodegradable alloy |
| title_short | Dynamic recrystallization and deformation behavior of an extruded Zn-0.2 Mg biodegradable alloy |
| title_sort | dynamic recrystallization and deformation behavior of an extruded zn 0 2 mg biodegradable alloy |
| topic | Zinc based bioalloy Compressive deformation Dynamic recrystallization Flow curve EBSD map |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422010195 |
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