| Full text | |
| Author(s): |
Pinotti, Vitor E.
;
Andreoli, Angelo F.
;
Nakahashi, Mayumi A.
;
Boccalini Jr, Mario
;
Landgraf, Fernando J. G.
;
Gargarella, Piter
Total Authors: 6
|
| Document type: | Journal article |
| Source: | Powder Technology; v. 444, p. 14-pg., 2024-06-11. |
| Abstract | |
The Fe6.5Si soft magnetic alloy exhibits promising magnetic properties for energy applications, including nearzero magnetostriction, low magnetocrystalline anisotropy, and higher electrical resistivity than conventional electrical steels. However, its brittleness impedes industrial use. Recent advances in powder-based additive manufacturing show potential for processing high-silicon electrical steels. This study focuses on the production cycle and properties of feedstock powder, which are crucial for such applications. Fe6.5Si alloy powders were produced via closed-coupled gas atomization. Comprehensive analysis covered mass balance, particle size distribution, powder flow, morphology, density, rheological properties, and thermal and magnetic behavior. Results suggest the feasibility of producing suitable Fe6.5Si alloy powder via gas atomization, enabling additive manufacturing of the next generation of medium/high-frequency electrical motors. The powder exhibited desirable characteristics within the size ranges applicable to laser powder bed fusion (20-75 mu m) and direct energy deposition (75-106 mu m), showing excellent flow behavior and morphological suitability for additive manufacturing. (AU) | |
| FAPESP's process: | 21/12056-7 - Soft magnetic composites produced by additive manufacturing |
| Grantee: | Angelo Fernandes Andreoli |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 20/06984-6 - Development of the additive manufacturing production chain of metal components |
| Grantee: | Mário Boccalini Júnior |
| Support Opportunities: | Research Grants - Problem-Oriented Research Centers in São Paulo |
| FAPESP's process: | 22/12178-8 - Fabrication and characterization of Fe-Si6.5 soft magnetic alloy metallic powders produced via gas atomization |
| Grantee: | Mayumi Andrade Nakahashi |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 22/05528-2 - Additive Manufacturing of layered metal composites with soft magnetic properties |
| Grantee: | Vitor Eduardo Pinotti |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 17/27031-4 - Effect of process parameters on the metallurgical characteristics of additive-manufactured alloys |
| Grantee: | Piter Gargarella |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 16/11309-0 - The study, development and application of a hybrid process: Additive Manufacturing (AM) plus High Speed Machining/Grinding (HSM/G) |
| Grantee: | Reginaldo Teixeira Coelho |
| Support Opportunities: | Research Projects - Thematic Grants |