Preparing high-strength and osteogenesis-induced Mg-Gd alloy with ultra-fine microstructure by equal channel angular pressing
Mechanical strength and corrosion resistance are needed for Mg based BMs in the application of biomedical fields. In the present study, a high-strength biodegradable Mg-Gd alloys with an ultrafine microstructure successfully were prepared by equal channel angular pressing (ECAP). The high tensile st...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/acc0e0 |
| _version_ | 1797746512884662272 |
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| author | Jiajun Wu Chao Shen Xiaoxiao Zhou Xiuhui Wang Linyuan Zhang |
| author_facet | Jiajun Wu Chao Shen Xiaoxiao Zhou Xiuhui Wang Linyuan Zhang |
| author_sort | Jiajun Wu |
| collection | DOAJ |
| description | Mechanical strength and corrosion resistance are needed for Mg based BMs in the application of biomedical fields. In the present study, a high-strength biodegradable Mg-Gd alloys with an ultrafine microstructure successfully were prepared by equal channel angular pressing (ECAP). The high tensile strength of ECAPed Mg-Gd alloys was attributed to ultrafine DRX grains and fragmented secondary phases. During ECAP, the grain structure was refined by dynamic recrystallization (DRX), and the size of the DRX grains was approximately 300 nm. The secondary phase with lamellar structures was fragmented into fine particles of submicrometer size after ECAP process. As the number of ECAP passes increased, the distribution of the fragmented secondary phase has been changed into a uniform distribution. The corrosion rates calculated from the hydrogen evolution test demonstrated that the 8p-ECAP Mg-Gd alloy with an ultrafine microstructure possessed better corrosion resistance. Cell and osteogenesis induction experiments confirmed that Mg-Gd alloys processed by ECAP exhibited good biocompatibility. This study provides a new method for preparing high-strength Mg alloys with good corrosion resistance and biocompatibility. |
| first_indexed | 2024-03-12T15:37:53Z |
| format | Article |
| id | doaj.art-05995b9396df48b08c4a881b4e26e032 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:37:53Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-05995b9396df48b08c4a881b4e26e0322023-08-09T16:06:02ZengIOP PublishingMaterials Research Express2053-15912023-01-0110303540210.1088/2053-1591/acc0e0Preparing high-strength and osteogenesis-induced Mg-Gd alloy with ultra-fine microstructure by equal channel angular pressingJiajun Wu0Chao Shen1Xiaoxiao Zhou2Xiuhui Wang3Linyuan Zhang4https://orcid.org/0000-0001-8594-370XDepartment of Orthopedics, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital , Shanghai, People’s Republic of ChinaDepartment of Orthopedics, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital , Shanghai, People’s Republic of ChinaDepartment of Orthopedics, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital , Shanghai, People’s Republic of ChinaDepartment of Orthopedics, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital , Shanghai, People’s Republic of ChinaDepartment of Orthopedics, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital , Shanghai, People’s Republic of ChinaMechanical strength and corrosion resistance are needed for Mg based BMs in the application of biomedical fields. In the present study, a high-strength biodegradable Mg-Gd alloys with an ultrafine microstructure successfully were prepared by equal channel angular pressing (ECAP). The high tensile strength of ECAPed Mg-Gd alloys was attributed to ultrafine DRX grains and fragmented secondary phases. During ECAP, the grain structure was refined by dynamic recrystallization (DRX), and the size of the DRX grains was approximately 300 nm. The secondary phase with lamellar structures was fragmented into fine particles of submicrometer size after ECAP process. As the number of ECAP passes increased, the distribution of the fragmented secondary phase has been changed into a uniform distribution. The corrosion rates calculated from the hydrogen evolution test demonstrated that the 8p-ECAP Mg-Gd alloy with an ultrafine microstructure possessed better corrosion resistance. Cell and osteogenesis induction experiments confirmed that Mg-Gd alloys processed by ECAP exhibited good biocompatibility. This study provides a new method for preparing high-strength Mg alloys with good corrosion resistance and biocompatibility.https://doi.org/10.1088/2053-1591/acc0e0biodegradable Mg alloysultra-fine microstructureECAPhigh strength |
| spellingShingle | Jiajun Wu Chao Shen Xiaoxiao Zhou Xiuhui Wang Linyuan Zhang Preparing high-strength and osteogenesis-induced Mg-Gd alloy with ultra-fine microstructure by equal channel angular pressing Materials Research Express biodegradable Mg alloys ultra-fine microstructure ECAP high strength |
| title | Preparing high-strength and osteogenesis-induced Mg-Gd alloy with ultra-fine microstructure by equal channel angular pressing |
| title_full | Preparing high-strength and osteogenesis-induced Mg-Gd alloy with ultra-fine microstructure by equal channel angular pressing |
| title_fullStr | Preparing high-strength and osteogenesis-induced Mg-Gd alloy with ultra-fine microstructure by equal channel angular pressing |
| title_full_unstemmed | Preparing high-strength and osteogenesis-induced Mg-Gd alloy with ultra-fine microstructure by equal channel angular pressing |
| title_short | Preparing high-strength and osteogenesis-induced Mg-Gd alloy with ultra-fine microstructure by equal channel angular pressing |
| title_sort | preparing high strength and osteogenesis induced mg gd alloy with ultra fine microstructure by equal channel angular pressing |
| topic | biodegradable Mg alloys ultra-fine microstructure ECAP high strength |
| url | https://doi.org/10.1088/2053-1591/acc0e0 |
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