Influence of manufacture process on magnetic property of FeCoV alloy

Chen, Junquan; Wang, Dong; Cheng, Siwei; Wang, Jing

doi:10.1109/icems.2014.7014019

Cited by 8 publications

(3 citation statements)

References 5 publications

(6 reference statements)

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“…For that reason, a small amount of vanadium (<3 wt%) is typically added as an alloying element to improve the ductility of the alloy while still retaining good magnetic properties. The traditional manufacturing method of stacking insulated sheets to build up a component includes many processing steps, such as casting, rolling and heat treatment, which increase the manufacturing cost (Chen et al , 2015). Soft magnetic components are also manufactured by compacting the alloy powder into a tool cavity, followed by a sintering step, resulting in homogenous high-precision components.…”

Section: Introductionmentioning

confidence: 99%

Properties of soft magnetic Fe-Co-V alloy produced by laser powder bed fusion

Riipinen

Metsä-Kortelainen

Lindroos

et al. 2019

RPJ

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Purpose The purpose of this paper is to report on the developments in manufacturing soft magnetic materials using laser powder bed fusion (L-PBF). Design/methodology/approach Ternary soft magnetic Fe-49Co-2V powder was produced by gas atomization and used in an L-PBF machine to produce samples for material characterization. The L-PBF process parameters were optimized for the material, using a design of experiments approach. The printed samples were exposed to different heat treatment cycles to improve the magnetic properties. The magnetic properties were measured with quasi-static direct current and alternating current measurements at different frequencies and magnetic flux densities. The mechanical properties were characterized with tensile tests. Electrical resistivity of the material was measured. Findings The optimized L-PBF process parameters resulted in very low porosity. The magnetic properties improved greatly after the heat treatments because of changes in microstructure. Based on the quasi-static DC measurement results, one of the heat treatment cycles led to magnetic saturation, permeability and coercivity values comparable to a commercial Fe-Co-V alloy. The other heat treatments resulted in abnormal grain growth and poor magnetic performance. The AC measurement results showed that the magnetic losses were relatively high in the samples owing to formation of eddy currents. Research limitations/implications The influence of L-PBF process parameters on the microstructure was not investigated; hence, understanding the relationship between process parameters, heat treatments and magnetic properties would require more research. Originality/value The relationship between microstructure, chemical composition, heat treatments, resistivity and magnetic/mechanical properties of L-PBF processed Fe-Co-V alloy has not been reported previously.

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Section: Introductionmentioning

confidence: 99%

Properties of soft magnetic Fe-Co-V alloy produced by laser powder bed fusion

Riipinen

Metsä-Kortelainen

Lindroos

et al. 2019

RPJ

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“…To improve the power density, the material named 1J22 is used for the stator core because of the high saturated flux density. To the author's knowledge, there is less pre-existing datum about 1J22 iron loss [16] . To obtain more accurate data of 1J22 iron loss, a ring specimen shown in Fig.…”

Section: Iron Loss Measurementmentioning

confidence: 94%

No-load iron loss model for a fractional-slot surface-mounted permanent magnet motor based on magnetic field analytical calculation

Zhang

et al. 2018

Chin. J. Electr. Eng.

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The common analytical models for the no-load iron loss of permanent magnet(PM) motors usually neglect the iron loss caused by the rotating magnetic field in the tooth tips and the harmonics of the magnetic fields in the teeth and yokes. This paper presents an analytical model for no-load iron loss of a fractional-slot surface-mounted permanent magnet motor. According to the existing analytical model of the magnetic field distribution in the slotted air gap, the magnetic flux densities considering the harmonics of the stator tooth and yoke are both derived based on the continuity of magnetic flux. Due to the complexity of the magnetic field in the tooth tip, the tangential flux density of the tooth tip is approximated by an equivalent sine wave and the radial component is regarded to be the same as that of the corresponding tooth. After obtaining the magnetic fields in stator different regions, the analytical iron loss is calculated by using the Bertotti model and the orthogonal decomposition model. A 20-pole/24-slot PM synchronous motor is taken as an example. The maximum error between the analytical model and finite element model(FEM) is 5.46%, which verifies the validity of the proposed method.

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“…During the cutting process, a considerable amount of material is wasted. Further, these processes deteriorate the electromagnetic characteristics of the steel sheets, especially near the cut edges [1].…”

mentioning

confidence: 99%

The Mitigation of Eddy-Current Losses in Ferromagnetic Samples Produced by Laser Powder Bed Fusion

et al. 2022

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We study the use of topology optimization in the design of low-loss ferromagnetic core structures for additively manufactured electrical machines. The test case was a simple toroid core with a primary and a secondary winding. A 2D axisymmetric finite element method model was implemented for the toroid, and the core topology was optimized for minimum losses and maximum secondary flux linkage. The optimized core was then modified for additive manufacturing, and test samples were built via laser powder bed fusion. The B-H characteristics and losses of the core were measured in several operation points. The losses were compared against an additively manufactured solid core, a laminated core, and an additively manufactured core with evenly placed air gaps (i.e., grooves). The results show that the losses in the topologyoptimized core are on the same level as the losses in the laminated core and considerably smaller than those in the solid core, which is a considerable improvement to previous published works.

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Influence of manufacture process on magnetic property of FeCoV alloy

Cited by 8 publications

References 5 publications

Properties of soft magnetic Fe-Co-V alloy produced by laser powder bed fusion

Properties of soft magnetic Fe-Co-V alloy produced by laser powder bed fusion

No-load iron loss model for a fractional-slot surface-mounted permanent magnet motor based on magnetic field analytical calculation

The Mitigation of Eddy-Current Losses in Ferromagnetic Samples Produced by Laser Powder Bed Fusion

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