Influence of magnesium addition on microstructural and mechanical stability of hydrostatically extruded biodegradable zinc alloys
Pure and low-alloy zinc holds significant potential for use in biodegradable devices, such as coronary stents. However, its thermal stability has not yet been thoroughly characterized. This study focuses on the effect of magnesium addition on the mechanical and microstructural stability of zinc allo...
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| Language: | English |
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KeAi Communications Co., Ltd.
2025-02-01
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| Series: | Bioactive Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2452199X24004316 |
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| author | Magdalena Gieleciak Anna Jarzębska Łukasz Maj Paweł Petrzak Mariusz Kulczyk Łukasz Rogal Magdalena Bieda |
| author_facet | Magdalena Gieleciak Anna Jarzębska Łukasz Maj Paweł Petrzak Mariusz Kulczyk Łukasz Rogal Magdalena Bieda |
| author_sort | Magdalena Gieleciak |
| collection | DOAJ |
| description | Pure and low-alloy zinc holds significant potential for use in biodegradable devices, such as coronary stents. However, its thermal stability has not yet been thoroughly characterized. This study focuses on the effect of magnesium addition on the mechanical and microstructural stability of zinc alloys with 0.6 and 1.3 wt% Mg, subjected to hot extrusion and hydrostatic extrusion. Pure zinc was used as a reference material to provide a comprehensive comparison. Electron Backscatter Diffraction (EBSD) analysis revealed that the addition of magnesium enhanced thermal stability by forming intermetallic Mg2Zn11 phases, that hindered grain growth as compared with pure zinc. The Zn-0.6 Mg alloy exhibited faster static recrystallization compared to the Zn-1.3 Mg alloy, attributed to its lower initial average grain size and higher density of low-angle grain boundaries. These microstructural changes correlated with mechanical properties, as all materials showed increased strength after heating to 50 °C, which was attributed to dislocation annihilation and the formation of low-angle grain boundaries, as observed through transmission electron microscopy (TEM). Static compression tests demonstrated that the Zn-1.3 Mg alloy maintained a high compressive yield strength of ≈350 MPa, even after heating to 150 °C, highlighting its potential for safe future processing into stents. |
| format | Article |
| id | doaj-art-39b18ebb0e70472c9930041f9cd3fa68 |
| institution | Kabale University |
| issn | 2452-199X |
| language | English |
| publishDate | 2025-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Bioactive Materials |
| spelling | doaj-art-39b18ebb0e70472c9930041f9cd3fa682024-12-14T06:31:38ZengKeAi Communications Co., Ltd.Bioactive Materials2452-199X2025-02-0144114Influence of magnesium addition on microstructural and mechanical stability of hydrostatically extruded biodegradable zinc alloysMagdalena Gieleciak0Anna Jarzębska1Łukasz Maj2Paweł Petrzak3Mariusz Kulczyk4Łukasz Rogal5Magdalena Bieda6Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25, 30-059 Kraków, PolandInstitute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25, 30-059 Kraków, Poland; Corresponding author.Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25, 30-059 Kraków, PolandInstitute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25, 30-059 Kraków, PolandInstitute of High Pressure Physics, Polish Academy of Sciences, Warszawa, PolandInstitute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25, 30-059 Kraków, PolandInstitute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25, 30-059 Kraków, PolandPure and low-alloy zinc holds significant potential for use in biodegradable devices, such as coronary stents. However, its thermal stability has not yet been thoroughly characterized. This study focuses on the effect of magnesium addition on the mechanical and microstructural stability of zinc alloys with 0.6 and 1.3 wt% Mg, subjected to hot extrusion and hydrostatic extrusion. Pure zinc was used as a reference material to provide a comprehensive comparison. Electron Backscatter Diffraction (EBSD) analysis revealed that the addition of magnesium enhanced thermal stability by forming intermetallic Mg2Zn11 phases, that hindered grain growth as compared with pure zinc. The Zn-0.6 Mg alloy exhibited faster static recrystallization compared to the Zn-1.3 Mg alloy, attributed to its lower initial average grain size and higher density of low-angle grain boundaries. These microstructural changes correlated with mechanical properties, as all materials showed increased strength after heating to 50 °C, which was attributed to dislocation annihilation and the formation of low-angle grain boundaries, as observed through transmission electron microscopy (TEM). Static compression tests demonstrated that the Zn-1.3 Mg alloy maintained a high compressive yield strength of ≈350 MPa, even after heating to 150 °C, highlighting its potential for safe future processing into stents.http://www.sciencedirect.com/science/article/pii/S2452199X24004316Biodegradable metalsZincHydrostatic extrusionThermal stability |
| spellingShingle | Magdalena Gieleciak Anna Jarzębska Łukasz Maj Paweł Petrzak Mariusz Kulczyk Łukasz Rogal Magdalena Bieda Influence of magnesium addition on microstructural and mechanical stability of hydrostatically extruded biodegradable zinc alloys Bioactive Materials Biodegradable metals Zinc Hydrostatic extrusion Thermal stability |
| title | Influence of magnesium addition on microstructural and mechanical stability of hydrostatically extruded biodegradable zinc alloys |
| title_full | Influence of magnesium addition on microstructural and mechanical stability of hydrostatically extruded biodegradable zinc alloys |
| title_fullStr | Influence of magnesium addition on microstructural and mechanical stability of hydrostatically extruded biodegradable zinc alloys |
| title_full_unstemmed | Influence of magnesium addition on microstructural and mechanical stability of hydrostatically extruded biodegradable zinc alloys |
| title_short | Influence of magnesium addition on microstructural and mechanical stability of hydrostatically extruded biodegradable zinc alloys |
| title_sort | influence of magnesium addition on microstructural and mechanical stability of hydrostatically extruded biodegradable zinc alloys |
| topic | Biodegradable metals Zinc Hydrostatic extrusion Thermal stability |
| url | http://www.sciencedirect.com/science/article/pii/S2452199X24004316 |
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