Effect of annealing on the microstructure and magnetic properties of soft magnetic Fe-Si produced via laser additive manufacturing

By M. Garibaldi, Ian Ashcroft, J. Lemke, M. Simonelli, Richard J. M. Hague. 2018

165 citations recorded by the source corpus.

Abstract We investigate the effect of annealing on the properties of Fe-6.9wt% Si produced by Selective Laser Melting (SLM), a powder-bed additive manufacturing technology. Results show that annealing at 1150 °C for 1 h produces a recrystallized microstructure characterised by predominantly equi-axed grains with sizes of up to 300 μm. Importantly, annealing retains the SLM-induced crystallographic 〈001〉 texture along the build direction of the sample. The quasi-static magnetic properties achieved upon annealing, with maximum relative permeability of 24,000 and coercivity of 16 A/m, compare favourably with those reported for commercial high-Si steel laminations.

Subfields: Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/855746f95082f30db8fbaf2bda3d7f13e1f71192

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Citations in the corpus

• Additive manufacturing of soft magnets for electrical machines—a review (2020, methodology): “5Si alloys has been attempted using SLM [15,100,104,105] and BJT [62].”