An investigation of constitutive modeling and 3D processing maps of Mg/HA composites for orthopedic applications
The hydroxyapatite particles as reinforcement materials have been widely considered to produce magnesium biocomposites used in biodegradable implants. However, Mg/HA biocomposites, which show poor ductility at room temperature due to their intrinsic properties, must be deformed at elevated temperatu...
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| 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/S223878542200905X |
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| author | M. Kasaeian-Naeini M. Sedighi R. Hashemi H. Delavar |
| author_facet | M. Kasaeian-Naeini M. Sedighi R. Hashemi H. Delavar |
| author_sort | M. Kasaeian-Naeini |
| collection | DOAJ |
| description | The hydroxyapatite particles as reinforcement materials have been widely considered to produce magnesium biocomposites used in biodegradable implants. However, Mg/HA biocomposites, which show poor ductility at room temperature due to their intrinsic properties, must be deformed at elevated temperatures. Thus, optimum hot deformation conditions of Mg/HA biocomposites can improve the corrosion behavior of these materials in addition to their mechanical and microstructural properties. In the present study, the high-temperature deformation behavior of Mg/1wt.% HA and Mg/2.5 wt.% HA biocomposites have been scrutinized using compression tests in the temperature ranges of 523–673 K and strain rates between 0.005 and 0.1 s−1. The true stress-true strain diagrams, constitutive analysis, 3D processing map for power dissipation efficiency and instability in the strains from 0.1 to 0.6, and microstructural observations were assessed for both biocomposites. The results indicated that the proposed constitutive model could predict the Mg/HA biocomposites’ high-temperature deformation behavior with adequate accuracy. The activation energy which obtained from constitutive equations for both Mg/1wt.% HA and Mg/2.5wt.% HA biocomposites were identified to be 256.302 Kj/mol and 224.798 Kj/mol, respectively. According to 3D processing maps, the highest value of power dissipation efficiency for Mg/1wt.% HA has occurred in the strain of 0.2, strain rate of 0.005 s−1, and temperature of 573 K; however, for Mg/2.5wt.% HA, it has located at the strain, temperature, and strain rate of 0.3, 530 K, and 0.09 s−1, respectively. The microstructural characterizations showed more dynamic recrystallization occurrence in Mg/2.5wt.% HA than the Mg/1wt.% HA biocomposite. |
| first_indexed | 2024-04-13T01:28:42Z |
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| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-13T01:28:42Z |
| publishDate | 2022-07-01 |
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| spelling | doaj.art-81baad97b5e14e34a43d99fb1e7e32da2022-12-22T03:08:34ZengElsevierJournal of Materials Research and Technology2238-78542022-07-011938943915An investigation of constitutive modeling and 3D processing maps of Mg/HA composites for orthopedic applicationsM. Kasaeian-Naeini0M. Sedighi1R. Hashemi2H. Delavar3School of Mechanical Engineering, Iran University of Science and Technology, Tehran, IranCorresponding author.; School of Mechanical Engineering, Iran University of Science and Technology, Tehran, IranSchool of Mechanical Engineering, Iran University of Science and Technology, Tehran, IranSchool of Mechanical Engineering, Iran University of Science and Technology, Tehran, IranThe hydroxyapatite particles as reinforcement materials have been widely considered to produce magnesium biocomposites used in biodegradable implants. However, Mg/HA biocomposites, which show poor ductility at room temperature due to their intrinsic properties, must be deformed at elevated temperatures. Thus, optimum hot deformation conditions of Mg/HA biocomposites can improve the corrosion behavior of these materials in addition to their mechanical and microstructural properties. In the present study, the high-temperature deformation behavior of Mg/1wt.% HA and Mg/2.5 wt.% HA biocomposites have been scrutinized using compression tests in the temperature ranges of 523–673 K and strain rates between 0.005 and 0.1 s−1. The true stress-true strain diagrams, constitutive analysis, 3D processing map for power dissipation efficiency and instability in the strains from 0.1 to 0.6, and microstructural observations were assessed for both biocomposites. The results indicated that the proposed constitutive model could predict the Mg/HA biocomposites’ high-temperature deformation behavior with adequate accuracy. The activation energy which obtained from constitutive equations for both Mg/1wt.% HA and Mg/2.5wt.% HA biocomposites were identified to be 256.302 Kj/mol and 224.798 Kj/mol, respectively. According to 3D processing maps, the highest value of power dissipation efficiency for Mg/1wt.% HA has occurred in the strain of 0.2, strain rate of 0.005 s−1, and temperature of 573 K; however, for Mg/2.5wt.% HA, it has located at the strain, temperature, and strain rate of 0.3, 530 K, and 0.09 s−1, respectively. The microstructural characterizations showed more dynamic recrystallization occurrence in Mg/2.5wt.% HA than the Mg/1wt.% HA biocomposite.http://www.sciencedirect.com/science/article/pii/S223878542200905XMagnesium/hydroxyapatite biocompositeHot deformationConstitutive analysis3D processing mapMicrostructure evolution |
| spellingShingle | M. Kasaeian-Naeini M. Sedighi R. Hashemi H. Delavar An investigation of constitutive modeling and 3D processing maps of Mg/HA composites for orthopedic applications Journal of Materials Research and Technology Magnesium/hydroxyapatite biocomposite Hot deformation Constitutive analysis 3D processing map Microstructure evolution |
| title | An investigation of constitutive modeling and 3D processing maps of Mg/HA composites for orthopedic applications |
| title_full | An investigation of constitutive modeling and 3D processing maps of Mg/HA composites for orthopedic applications |
| title_fullStr | An investigation of constitutive modeling and 3D processing maps of Mg/HA composites for orthopedic applications |
| title_full_unstemmed | An investigation of constitutive modeling and 3D processing maps of Mg/HA composites for orthopedic applications |
| title_short | An investigation of constitutive modeling and 3D processing maps of Mg/HA composites for orthopedic applications |
| title_sort | investigation of constitutive modeling and 3d processing maps of mg ha composites for orthopedic applications |
| topic | Magnesium/hydroxyapatite biocomposite Hot deformation Constitutive analysis 3D processing map Microstructure evolution |
| url | http://www.sciencedirect.com/science/article/pii/S223878542200905X |
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