Microstructure and magnetic properties of FeSiBCrC soft magnetic alloy manufactured by selective laser melting

To investigate the microstructure and magnetic properties, FeSiBCrC bulk soft magnetic alloy was prepared by selective laser melting (SLM) technology using amorphous feedstock powder in this work. The results show that amorphous structures and crystalline phases occur in the alloy. And this alloy is mainly composed of alpha-Fe(Si), Fe3Si, FeB and Fe2B. It is mainly composed of metastable grains, equiaxed grains and amorphous matrix. This alloy has high microhardness (nearly 900 HV0.1). The SLMed alloy exhibits good soft magnetic properties. The coercivity of the direction X and direction Z is almost the same, which is 78.8 Oe. And it has great saturation magnetization with 162 emu/g in both directions. This work reveals the potential of fabricating bulk Fe-Si based amorphous soft magnetic alloys via SLM. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

The study prepared FeSiBCrC bulk soft magnetic alloy using selective laser melting technology, with high microhardness and good soft magnetic properties. The alloy is mainly composed of several crystalline phases, demonstrating the potential of fabricating bulk Fe-Si based amorphous soft magnetic alloys.