Laser additive processing of Ni-Fe-V and Ni-Fe-Mo Permalloys: Microstructure and magnetic properties

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Abstract

Ni-Fe-Mo/V known as Permalloys are of great interest because of widespread applications in transformers, electric motors, and other electromagnetic devices. This letter focuses on the ability to utilize laser-based additive manufacturing, specifically the laser engineered net shaping (LENS™) process, to deposit soft magnetic Ni-Fe-V and Ni-Fe-Mo alloys. Though these alloys have been deposited from an elemental powder blend, they exhibit relatively uniform fcc solid solution microstructures. While the saturation magnetization (Ms) values for the LENS™ deposited alloys is comparable to those of their conventionally processed counterparts, the laser processed alloys exhibit higher coercivity (Hc) values, presumably due to microstructural defects.
Original languageEnglish
Pages (from-to)9-11
Number of pages3
JournalMaterials Letters
Volume192
DOIs
StatePublished - Apr 1 2017

Keywords

  • Additive manufacturing
  • Laser engineered net shaping (LENS™)
  • Magnetic materials
  • Microstructure
  • Permalloys

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