Novel Mg-based alloys by selective laser melting for biomedical applications: microstructure evolution, microhardness and in vitro degradation behaviour
Laser-melted Mg-3Zn-xDy (x = 0, 1, 3, 5 wt. %) alloys were investigated as candidate materials for biodegradable metallic implant applications. The results showed that the α-Mg, MgZn2 and Mg-Zn-Dy phases were distributed in the Dy-containing alloys. Due to the addition of Dy, the grain size was sign...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-04-01
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| Series: | Virtual and Physical Prototyping |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17452759.2017.1411662 |
| _version_ | 1797678727982743552 |
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| author | Teng Long Xiaohong Zhang Qianli Huang Ling Liu Yong Liu Junye Ren Yong Yin Dengke Wu Hong Wu |
| author_facet | Teng Long Xiaohong Zhang Qianli Huang Ling Liu Yong Liu Junye Ren Yong Yin Dengke Wu Hong Wu |
| author_sort | Teng Long |
| collection | DOAJ |
| description | Laser-melted Mg-3Zn-xDy (x = 0, 1, 3, 5 wt. %) alloys were investigated as candidate materials for biodegradable metallic implant applications. The results showed that the α-Mg, MgZn2 and Mg-Zn-Dy phases were distributed in the Dy-containing alloys. Due to the addition of Dy, the grain size was significantly refined. As the grain size decreased and the second phase content increased, the hardness monotonously increased. The degradation characteristics analysis via immersion testing indicated that the degradation rate of the laser-melted Mg-3Zn-1Dy alloys was remarkably reduced, evidenced by the corresponding lower average hydrogen evolution rate. Consequently, the Mg-3Zn-1Dy was considered to be a promising candidate for implant applications, due to the appropriate rate of mechanical integrity loss during degradation. Overall, the mitigated degradation rate was attributed to the refined grains, the homogeneous microstructure as well as a certain amount of second phase produced during the process of selective laser melting. |
| first_indexed | 2024-03-11T23:04:08Z |
| format | Article |
| id | doaj.art-fef2025c8ea2470abb61ff3089b71f18 |
| institution | Directory Open Access Journal |
| issn | 1745-2759 1745-2767 |
| language | English |
| last_indexed | 2024-03-11T23:04:08Z |
| publishDate | 2018-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj.art-fef2025c8ea2470abb61ff3089b71f182023-09-21T13:56:59ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672018-04-01132718110.1080/17452759.2017.14116621411662Novel Mg-based alloys by selective laser melting for biomedical applications: microstructure evolution, microhardness and in vitro degradation behaviourTeng Long0Xiaohong Zhang1Qianli Huang2Ling Liu3Yong Liu4Junye Ren5Yong Yin6Dengke Wu7Hong Wu8Central South UniversityHunan Institute of Science and TechnologyCentral South UniversityCentral South UniversityCentral South UniversityCentral South UniversityCentral South UniversityCentral South UniversityCentral South UniversityLaser-melted Mg-3Zn-xDy (x = 0, 1, 3, 5 wt. %) alloys were investigated as candidate materials for biodegradable metallic implant applications. The results showed that the α-Mg, MgZn2 and Mg-Zn-Dy phases were distributed in the Dy-containing alloys. Due to the addition of Dy, the grain size was significantly refined. As the grain size decreased and the second phase content increased, the hardness monotonously increased. The degradation characteristics analysis via immersion testing indicated that the degradation rate of the laser-melted Mg-3Zn-1Dy alloys was remarkably reduced, evidenced by the corresponding lower average hydrogen evolution rate. Consequently, the Mg-3Zn-1Dy was considered to be a promising candidate for implant applications, due to the appropriate rate of mechanical integrity loss during degradation. Overall, the mitigated degradation rate was attributed to the refined grains, the homogeneous microstructure as well as a certain amount of second phase produced during the process of selective laser melting.http://dx.doi.org/10.1080/17452759.2017.1411662degradation behaviourmg-3zn-xdy alloysselective laser meltingmicrostructure evolutionmicrohardness |
| spellingShingle | Teng Long Xiaohong Zhang Qianli Huang Ling Liu Yong Liu Junye Ren Yong Yin Dengke Wu Hong Wu Novel Mg-based alloys by selective laser melting for biomedical applications: microstructure evolution, microhardness and in vitro degradation behaviour Virtual and Physical Prototyping degradation behaviour mg-3zn-xdy alloys selective laser melting microstructure evolution microhardness |
| title | Novel Mg-based alloys by selective laser melting for biomedical applications: microstructure evolution, microhardness and in vitro degradation behaviour |
| title_full | Novel Mg-based alloys by selective laser melting for biomedical applications: microstructure evolution, microhardness and in vitro degradation behaviour |
| title_fullStr | Novel Mg-based alloys by selective laser melting for biomedical applications: microstructure evolution, microhardness and in vitro degradation behaviour |
| title_full_unstemmed | Novel Mg-based alloys by selective laser melting for biomedical applications: microstructure evolution, microhardness and in vitro degradation behaviour |
| title_short | Novel Mg-based alloys by selective laser melting for biomedical applications: microstructure evolution, microhardness and in vitro degradation behaviour |
| title_sort | novel mg based alloys by selective laser melting for biomedical applications microstructure evolution microhardness and in vitro degradation behaviour |
| topic | degradation behaviour mg-3zn-xdy alloys selective laser melting microstructure evolution microhardness |
| url | http://dx.doi.org/10.1080/17452759.2017.1411662 |
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