磁致伸缩铁钴合金的增材制造

Additive Manufacturing of Magnetostrictive Fe-Co Alloys.

作者信息

Nakajima Kenya, Leparoux Marc, Kurita Hiroki, Lanfant Briac, Cui Di, Watanabe Masahito, Sato Takenobu, Narita Fumio

机构信息

Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan.

Swiss Federal Laboratories for Materials Science and Technology (Empa), CH-3602 Thun, Switzerland.

出版信息

Materials (Basel). 2022 Jan 18;15(3):709. doi: 10.3390/ma15030709.

DOI:10.3390/ma15030709

PMID:35160652

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8837020/

Abstract

Fe-Co alloys are attracting attention as magnetostrictive materials for energy harvesting and sensor applications. This work investigated the magnetostriction characteristics and crystal structure of additive-manufactured Fe-Co alloys using directed energy deposition. The additive-manufactured Fe-Co parts tended to exhibit better magnetostrictive performance than the hot-rolled Fe-Co alloy. The anisotropy energy Δ for the Fe-Co bulk, prepared under a power of 300 W (referred to as bulk-300 W), was larger than for the rolled sample. For the bulk-300 W sample in a particular plane, the piezomagnetic constant was large, irrespective of the direction of the magnetic field. Elongated voids that formed during additive manufacturing changed the magnetostrictive behavior in a direction perpendicular to these voids. Magnetic property measurements showed that the coercivity decreased. Since sensors should be highly responsive, Fe-Co three-dimensional parts produced via additive manufacturing can be applied as force sensors.

摘要

铁钴合金作为用于能量收集和传感器应用的磁致伸缩材料正受到关注。这项工作研究了使用定向能量沉积增材制造的铁钴合金的磁致伸缩特性和晶体结构。增材制造的铁钴零件往往比热轧铁钴合金表现出更好的磁致伸缩性能。在300W功率下制备的铁钴块体（称为块体-300W）的各向异性能量Δ大于轧制样品。对于特定平面中的块体-300W样品，无论磁场方向如何，压磁常数都很大。增材制造过程中形成的细长空隙改变了垂直于这些空隙方向的磁致伸缩行为。磁性测量表明矫顽力降低。由于传感器应具有高响应性，通过增材制造生产的铁钴三维零件可作为力传感器应用。