Breaking conventional limits of silicon content in Fe-xSi magnetic alloys through additive manufacturing
Silicon steels, e.g., Fe-3.2% Si alloys, are widely used in energy conversion and transmission. Increasing the Si content can enhance electrical resistivity and reduce magnetic hysteresis loss, improving the energy efficiency. However, high silicon content decreases ductility and workability, limiti...
| Main Authors: | , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/180183 |
| _version_ | 1826113239697588224 |
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| author | Teh, Wei Hock Tan, Li Ping Chen, Shilin Wei, Fengxia Lee, Jing Jun Padhy, Shakti P. Chaudhary, V. Tan, Cheng Cheh Ramanujan, Raju V. |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Teh, Wei Hock Tan, Li Ping Chen, Shilin Wei, Fengxia Lee, Jing Jun Padhy, Shakti P. Chaudhary, V. Tan, Cheng Cheh Ramanujan, Raju V. |
| author_sort | Teh, Wei Hock |
| collection | NTU |
| description | Silicon steels, e.g., Fe-3.2% Si alloys, are widely used in energy conversion and transmission. Increasing the Si content can enhance electrical resistivity and reduce magnetic hysteresis loss, improving the energy efficiency. However, high silicon content decreases ductility and workability, limiting the Si content of the alloys that can be produced by conventional manufacturing. Instead, we used additive manufacturing by the direct energy deposition technique to produce high Si content Fe-Si alloys. Dense samples with up to 20% Si were successfully fabricated for the first time. A substantial change in saturation magnetization (from 90 to 209 emu/g) and a three-fold increase in hardness was observed with higher Si content. The electrical resistivity values tripled, enhancing the attractiveness of these higher Si content alloys. The yield strength, ultimate tensile strength also increased, from 71 to 545 MPa, and 91 to 567 MPa, respectively. The coercivity remained relatively unchanged in the range of 9.1 to 10.8 Oe. Our results demonstrate the potential of fabrication of bulk high Si content Fe-Si alloys via additive manufacturing. |
| first_indexed | 2024-10-01T03:20:17Z |
| format | Journal Article |
| id | ntu-10356/180183 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:20:17Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1801832024-09-23T05:42:27Z Breaking conventional limits of silicon content in Fe-xSi magnetic alloys through additive manufacturing Teh, Wei Hock Tan, Li Ping Chen, Shilin Wei, Fengxia Lee, Jing Jun Padhy, Shakti P. Chaudhary, V. Tan, Cheng Cheh Ramanujan, Raju V. School of Materials Science and Engineering Engineering Additive manufacturing Magnetic materials Silicon steels, e.g., Fe-3.2% Si alloys, are widely used in energy conversion and transmission. Increasing the Si content can enhance electrical resistivity and reduce magnetic hysteresis loss, improving the energy efficiency. However, high silicon content decreases ductility and workability, limiting the Si content of the alloys that can be produced by conventional manufacturing. Instead, we used additive manufacturing by the direct energy deposition technique to produce high Si content Fe-Si alloys. Dense samples with up to 20% Si were successfully fabricated for the first time. A substantial change in saturation magnetization (from 90 to 209 emu/g) and a three-fold increase in hardness was observed with higher Si content. The electrical resistivity values tripled, enhancing the attractiveness of these higher Si content alloys. The yield strength, ultimate tensile strength also increased, from 71 to 545 MPa, and 91 to 567 MPa, respectively. The coercivity remained relatively unchanged in the range of 9.1 to 10.8 Oe. Our results demonstrate the potential of fabrication of bulk high Si content Fe-Si alloys via additive manufacturing. Agency for Science, Technology and Research (A*STAR) This work is supported by the AME Programmatic Fund by the Agency for Science, Technology and Research, Singapore [Grant No. A1898b0043]. 2024-09-23T05:42:27Z 2024-09-23T05:42:27Z 2024 Journal Article Teh, W. H., Tan, L. P., Chen, S., Wei, F., Lee, J. J., Padhy, S. P., Chaudhary, V., Tan, C. C. & Ramanujan, R. V. (2024). Breaking conventional limits of silicon content in Fe-xSi magnetic alloys through additive manufacturing. Journal of Alloys and Compounds, 983, 173829-. https://dx.doi.org/10.1016/j.jallcom.2024.173829 0925-8388 https://hdl.handle.net/10356/180183 10.1016/j.jallcom.2024.173829 2-s2.0-85185409934 983 173829 en A1898b0043 Journal of Alloys and Compounds © 2024 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering Additive manufacturing Magnetic materials Teh, Wei Hock Tan, Li Ping Chen, Shilin Wei, Fengxia Lee, Jing Jun Padhy, Shakti P. Chaudhary, V. Tan, Cheng Cheh Ramanujan, Raju V. Breaking conventional limits of silicon content in Fe-xSi magnetic alloys through additive manufacturing |
| title | Breaking conventional limits of silicon content in Fe-xSi magnetic alloys through additive manufacturing |
| title_full | Breaking conventional limits of silicon content in Fe-xSi magnetic alloys through additive manufacturing |
| title_fullStr | Breaking conventional limits of silicon content in Fe-xSi magnetic alloys through additive manufacturing |
| title_full_unstemmed | Breaking conventional limits of silicon content in Fe-xSi magnetic alloys through additive manufacturing |
| title_short | Breaking conventional limits of silicon content in Fe-xSi magnetic alloys through additive manufacturing |
| title_sort | breaking conventional limits of silicon content in fe xsi magnetic alloys through additive manufacturing |
| topic | Engineering Additive manufacturing Magnetic materials |
| url | https://hdl.handle.net/10356/180183 |
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