In-Situ Alloying of Fe-Si-Al Soft Magnetic Alloys Using Laser Powder Bed Fusion

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dc.contributor.authorShri Srinivas, Akshay
dc.contributor.departmentChalmers tekniska högskola / Institutionen för industri- och materialvetenskapsv
dc.contributor.departmentChalmers University of Technology / Department of Industrial and Materials Scienceen
dc.contributor.examinerChaudhary, Varun
dc.contributor.supervisorChaudhary, Varun
dc.date.accessioned2024-11-07T13:32:24Z
dc.date.available2024-11-07T13:32:24Z
dc.date.issued2024
dc.date.submitted
dc.description.abstractImproving efficiency and reducing power losses in electrical machines relies heavily on the development of advanced soft magnetic materials with optimized properties. To address this need, we employed in-situ alloying of 5.4% aluminum and 24.6% iron with Fe-6.5Si using the Laser Powder Bed Fusion (L-PBF) technique. This specific composition was designed to achieve a balanced set of multi-properties, including high saturation magnetization, low coercivity, high resistivity, and superior mechanical strength. The resulting Fe90.05Si4.55Al5.4 alloy was analyzed through various characterization techniques to gain insights into its microstructure, crystal structure, as well as its magnetic and mechanical properties. The analysis revealed a homogeneous alloy with a single-phase body-centered cubic (BCC) structure. Through microstructure analysis, it was found that the metal regions was dense with very few cracks whereas the elemental composition was found to be homogeneous and similar to the nominal composition in these regions. The alloy exhibited a saturation magnetization of 166 emu/g and a coercivity of 4.7 Oe and found to be magnetically stable upto a temperature of 900 K. Additionally, a Vickers hardness of 423 HV was measured, which is significantly higher than that of Fe-3.5Si and Fe-6.5Si.
dc.identifier.coursecodeIMSX30
dc.identifier.urihttp://hdl.handle.net/20.500.12380/308963
dc.language.isoeng
dc.setspec.uppsokTechnology
dc.subjectIn-situ alloying
dc.subjectCarbonyl Iron Powder
dc.subjectL-PBF
dc.subjectflowability
dc.subjectcharacterization
dc.titleIn-Situ Alloying of Fe-Si-Al Soft Magnetic Alloys Using Laser Powder Bed Fusion
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster's Thesisen
dc.type.uppsokH
local.programmeProduct development (MPPDE), MSc
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