Effect of annealing on the microstructure and magnetic properties of soft magnetic Fe-Si produced via laser additive manufacturing
Effect of annealing on the microstructure and magnetic properties of soft magnetic Fe-Si produced via laser additive manufacturing
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DOI：
10.1016/j.scriptamat.2017.08.042
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发表时间：
2018-01-01
影响因子：
6
通讯作者：
Hague, R.
中科院分区：
文献类型：
--
作者：
Garibaldi, M.;Ashcroft, I.;Hague, R.
我们研究了退火对采用粉末床增材制造技术选择性激光熔化 (SLM) 生产的 Fe-6.9wt% Si 性能的影响。结果表明，在 1150 摄氏度下退火 1 小时可产生再结晶显微组织，其特征主要是尺寸高达 300 μm 的等轴晶粒。重要的是，退火沿样品的构建方向保留了 SLM 诱导的晶体 <001> 织构。退火后获得的准静态磁性能，最大相对磁导率为 24,000，矫顽力为 16 A/m，与商业高硅钢叠片的报道相比毫不逊色。 (C) 2017 Acta Materialia Inc. 由 Elsevier Ltd 出版。保留所有权利。
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 degrees C for 1 h produces a recrystallized microstructure characterised by predominantly equi-axed grains with sizes of up to 300 mu m. 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. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.