Magnetostrictive bulk Fe-Ga alloys prepared by selective laser melting for biodegradable implant applications
Magnetostrictive Fe-Ga alloys have received extensive attention for their good mechanical properties and low saturation magnetization. However, the magnetostriction of bulk polycrystalline Fe-Ga alloys always suffers a major setback due to random grain orientation. In this study, selective laser mel...
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Elsevier
2022-08-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S026412752200483X |
| _version_ | 1811294980272029696 |
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| author | Chengde Gao Zihao Zeng Shuping Peng Cijun Shuai |
| author_facet | Chengde Gao Zihao Zeng Shuping Peng Cijun Shuai |
| author_sort | Chengde Gao |
| collection | DOAJ |
| description | Magnetostrictive Fe-Ga alloys have received extensive attention for their good mechanical properties and low saturation magnetization. However, the magnetostriction of bulk polycrystalline Fe-Ga alloys always suffers a major setback due to random grain orientation. In this study, selective laser melting (SLM) was used for the first time to manufacture bulk polycrystalline Fe81Ga19 alloys, and different scanning paths were determined for revealing the influences on grain orientation and magnetostrictive properties. The results showed that elongated columnar grains formed in the building direction due to the epitaxial growth during SLM. For zigzag scanning, grain orientation was parallel to the building direction while tilted by ∼17° for unidirectional scanning. And annular scanning resulted in mixed grain orientations in the alloys. Moreover, Fe81Ga19 alloy with zigzag scanning exhibited 〈100〉 preferred grain orientation. Consequently, the saturated magnetostriction of bulk Fe81Ga19 alloy with zigzag scanning reached ∼77.2 ppm, representing 23.9% and 25.1% increments compared with unidirectional and annular scanning, respectively. The Fe81Ga19 alloy with zigzag scanning also presented an ultimate compressive strength of 448.6 MPa and a degradation rate of 0.09 mm/y, as well as favorable biocompatibility. These results indicated that SLM might be a potential method for manufacturing magnetostrictive bulk Fe-Ga alloys for implant applications. |
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| id | doaj.art-3c528d022e494da9b6c1161852a01ea2 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-13T05:25:29Z |
| publishDate | 2022-08-01 |
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| spelling | doaj.art-3c528d022e494da9b6c1161852a01ea22022-12-22T03:00:36ZengElsevierMaterials & Design0264-12752022-08-01220110861Magnetostrictive bulk Fe-Ga alloys prepared by selective laser melting for biodegradable implant applicationsChengde Gao0Zihao Zeng1Shuping Peng2Cijun Shuai3State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaState Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaThe Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan 410078, China; Corresponding authors at: State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China (C. Shuai).State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; Institute of Additive Manufacturing, Jiangxi University of Science and Technology, Nanchang 330013, China; Corresponding authors at: State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China (C. Shuai).Magnetostrictive Fe-Ga alloys have received extensive attention for their good mechanical properties and low saturation magnetization. However, the magnetostriction of bulk polycrystalline Fe-Ga alloys always suffers a major setback due to random grain orientation. In this study, selective laser melting (SLM) was used for the first time to manufacture bulk polycrystalline Fe81Ga19 alloys, and different scanning paths were determined for revealing the influences on grain orientation and magnetostrictive properties. The results showed that elongated columnar grains formed in the building direction due to the epitaxial growth during SLM. For zigzag scanning, grain orientation was parallel to the building direction while tilted by ∼17° for unidirectional scanning. And annular scanning resulted in mixed grain orientations in the alloys. Moreover, Fe81Ga19 alloy with zigzag scanning exhibited 〈100〉 preferred grain orientation. Consequently, the saturated magnetostriction of bulk Fe81Ga19 alloy with zigzag scanning reached ∼77.2 ppm, representing 23.9% and 25.1% increments compared with unidirectional and annular scanning, respectively. The Fe81Ga19 alloy with zigzag scanning also presented an ultimate compressive strength of 448.6 MPa and a degradation rate of 0.09 mm/y, as well as favorable biocompatibility. These results indicated that SLM might be a potential method for manufacturing magnetostrictive bulk Fe-Ga alloys for implant applications.http://www.sciencedirect.com/science/article/pii/S026412752200483XFe-Ga alloysSelective laser meltingScanning pathsGrain orientationMagnetostriction |
| spellingShingle | Chengde Gao Zihao Zeng Shuping Peng Cijun Shuai Magnetostrictive bulk Fe-Ga alloys prepared by selective laser melting for biodegradable implant applications Materials & Design Fe-Ga alloys Selective laser melting Scanning paths Grain orientation Magnetostriction |
| title | Magnetostrictive bulk Fe-Ga alloys prepared by selective laser melting for biodegradable implant applications |
| title_full | Magnetostrictive bulk Fe-Ga alloys prepared by selective laser melting for biodegradable implant applications |
| title_fullStr | Magnetostrictive bulk Fe-Ga alloys prepared by selective laser melting for biodegradable implant applications |
| title_full_unstemmed | Magnetostrictive bulk Fe-Ga alloys prepared by selective laser melting for biodegradable implant applications |
| title_short | Magnetostrictive bulk Fe-Ga alloys prepared by selective laser melting for biodegradable implant applications |
| title_sort | magnetostrictive bulk fe ga alloys prepared by selective laser melting for biodegradable implant applications |
| topic | Fe-Ga alloys Selective laser melting Scanning paths Grain orientation Magnetostriction |
| url | http://www.sciencedirect.com/science/article/pii/S026412752200483X |
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