Effect of a small addition of Cr on soft magnetic and mechanical properties of Fe–49Co–2V alloy

Hou, Chongqiang; Shan, Yijiao; Wu, Haichen; Bi, Xiaojun

doi:10.1016/j.jallcom.2012.12.044

Cited by 15 publications

(5 citation statements)

References 17 publications

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“…The traditional FeCo alloys have been usually prepared by mechanical alloying or using methods of smelting with Fe, Co, Ni, and some adding elements under the protection of inert gas, and commonly put to use in bulk materials [5][6][7], while the bulk FeCo materials often show poor mechanical properties due to the brittleness of FeCo phase [8,9]. For fabricating the FeCo-based magnetic component with complicated shape, it is necessary to improve the mechanical performance of FeCo alloys by optimizing their composition and microstructure.…”

Section: Introductionmentioning

confidence: 99%

Controlled Morphologies and Intrinsic Magnetic Properties of Chemically Synthesized Large-Grain FeCo Particles

Cao

Yang

et al. 2015

J Supercond Nov Magn

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The high-purity FeCo particles with particle size ranging from 100 nm to 5 μm are fabricated using a direct chemical method. The controlled morphologies of the FeCo samples vary from nearly-spherical to urchin-like or cubic shape under optimal reaction conditions. Very slight surface oxidation is observed in these large-grain FeCo particles. It shows a low coercivity with 91 Oe for the nearly-spherical FeCo particles, while a much higher coercivity of 236 Oe is observed in the urchin-like samples, which can be mainly ascribed to their different morphologies and particle sizes. High saturation magnetization of 205-211 A/m 2 /kg can be achieved in these micron-level FeCo particles due to their high purity and single bodycentered cubic (bcc) phase structure. The compositioncontrolled FeCo particles with different Fe/Co atom ratios can be obtained by adjusting the reaction temperature, which results in their variable saturation magnetization. The relative simple and low-cost chemical synthesis of large-grain FeCo particles promise their potential use in complicated shape and miniaturized FeCo-based magnetic components.

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Section: Introductionmentioning

confidence: 99%

Controlled Morphologies and Intrinsic Magnetic Properties of Chemically Synthesized Large-Grain FeCo Particles

Cao

Yang

et al. 2015

J Supercond Nov Magn

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“…However, in the study of steel and metal, the qualified product can only be obtained when composition and process are well matched within a specific range. Property deterioration may result if these parameters are too high or too low [36,37]. Therefore, the qualified sample region is usually wrapped in the unqualified sample region.…”

Section: Discriminant Analysis Modelmentioning

confidence: 99%

Material Quality Filter Model: Machine Learning Integrated with Expert Experience for Process Optimization

Wang

Li²,

Pan

et al. 2023

Metals

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In the process of material production, the mismatch between raw material parameters and manufacturing processing parameters may lead to fluctuations in product properties and ultimately to unstable or unqualified product quality. In this paper, we propose the concept of the Quality Filter model for process optimization. The Quality Filter model uses the property prediction model as a surrogate model and integrates expert experience and process window constraints to construct a loss function. When raw material parameters are supplied, the suitable processing parameters can be automatically matched, and the processing fluctuation can be used to hedge the fluctuations in raw material, thus stabilizing the product quality and improving overall product properties. A trial production data set of 128 samples of wind power steel from a steel plant was used to test the model. We selected the ellipsoid discriminant analysis model with a classification accuracy rate of 82.81% as the surrogate model, which gives a highly interpretable visualization result. Finally, the results show that the properties of the samples that underwent the optimized process are improved.

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“…Lattice mismatch at the interface of precipitates and matrix was suggested to give rise to a repulsive elastic interaction which adds to the resistant force against dislocation movements even at high temperatures [9]. In our previous work, it has been also found that addition of a very small amount of Cr to FeCoe2V alloy combined with appropriate heat treatment leads to a remarkable improvement in tensile strength and ductility while maintaining their excellent soft magnetic properties [10,11], owing to a certain amount of fine bcc precipitates existing in the matrix of FeCoe2V alloy. It further reveals that the precipitates play a key role in hindering dislocation movement [10].…”

Section: Introductionmentioning

confidence: 98%

Effect of a small addition of Cr on soft magnetic and mechanical properties of Fe–49Co–2V alloy

Cited by 15 publications

References 17 publications

Controlled Morphologies and Intrinsic Magnetic Properties of Chemically Synthesized Large-Grain FeCo Particles

Controlled Morphologies and Intrinsic Magnetic Properties of Chemically Synthesized Large-Grain FeCo Particles

Material Quality Filter Model: Machine Learning Integrated with Expert Experience for Process Optimization

Improvement of the creep resistance of FeCo–2V alloy arising from a small addition of Cr

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