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

Garibaldi, M.; Ashcroft, I.; Lemke, J. N.; Simonelli, M.; Hague, R.

Abstract

© 2017 Acta Materialia Inc. 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.

Citation

Garibaldi, M., Ashcroft, I., Lemke, J. N., Simonelli, M., & Hague, R. (2018). Effect of annealing on the microstructure and magnetic properties of soft magnetic Fe-Si produced via laser additive manufacturing. Scripta Materialia, 142, 121-125. https://doi.org/10.1016/j.scriptamat.2017.08.042

• Journal Article Type: Article
• Acceptance Date: Aug 27, 2017
• Publication Date: Jan 1, 2018
• Deposit Date: Nov 14, 2019
• Journal: Scripta Materialia
• Print ISSN: 1359-6462
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 142
• Pages: 121-125
• DOI: https://doi.org/10.1016/j.scriptamat.2017.08.042
• Public URL: https://nottingham-repository.worktribe.com/output/3285540
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S1359646217305067
• Additional Information: This article is maintained by: Elsevier; Article Title: Effect of annealing on the microstructure and magnetic properties of soft magnetic Fe-Si produced via laser additive manufacturing; Journal Title: Scripta Materialia; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.scriptamat.2017.08.042; Content Type: article; Copyright: © 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.