Effect of Fe-Ni Substitution in FeNiSiB Soft Magnetic Alloys Produced by Melt Spinning

Yılmaz, Yasin; Akgül, Bekir; Karataş, Hakan; Vurdu, Can Dogan

doi:10.2478/adms-2021-0026

Cited by 7 publications

(3 citation statements)

References 50 publications

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“…Thanks to the rapid solidification processes, the grain refinement can be effectively triggered by obtaining high-density nuclei in the microstructure of the alloys [4,42,43]. Melt spinning method, which is one of the rapid solidification methods, comes into prominence due to its relatively high cooling rates (10 5 -10 7 K/s) and mass production advantage [38,[42][43][44]. Spraying a homogeneous molten metal alloy onto a rotating copper wheel and rapidly solidifying into a thin ribbon are steps during the process.…”

Section: Introductionmentioning

confidence: 99%

Effects of B Addition on the Microstructure and Microhardness of Melt-Spun Al-7075 Alloy

Kılıçaslan

Elburni

Yılmaz

et al. 2022

Advances in Materials Science

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Main aim of this study is to examine change of microstructural and the mechanical properties of Al-7075 alloy depending on B content added with different proportions. Rapid solidification process used to produce the alloys was carried out with a single roll melt spinner via a wheel with a rotational speed of 25 m/s. For the microstructural characterization of the alloys, a scanning electron microscope and X-ray diffraction analyzes were used. According to obtained results, it can be said that B addition led to modification of dimensions and shapes of both α−Al and intermetallic phases occurred, it reduced average grain size from 0.45 μm to 0.34 μm in the microstructure. The B addition also led to dramatically increase in microhardness of the Al-7075 alloy. The microhardness of the alloy with 0.4 wt. % B is 0.19 GPa, this is clearly one times higher than that of the alloy without B addition. The microhardness of the alloy with 1 wt. % B is 0.21 GPa, this is also slightly higher than that of the alloy with 0.4 wt. % B.

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Section: Introductionmentioning

confidence: 99%

Effects of B Addition on the Microstructure and Microhardness of Melt-Spun Al-7075 Alloy

Kılıçaslan

Elburni

Yılmaz

et al. 2022

Advances in Materials Science

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“…It can be said that this situation increases the need for NdFeB magnets with high (BH)max and high Hc properties. Among the existing production methods, melt spinning method is a type of rapid solidification method using very high cooling rates (as high as 10 9 K/s), it provides amorphous and/or nanocrystalline structures [12,13] and thus superior magnetic properties such as high Hc and (BH)max unique to permanent magnets [1].…”

Section: Introductionmentioning

confidence: 99%

Effects of Heat Treatment and on Magnetic Properties of NdFeB Based Permanent Magnet Alloys

Yılmaz¹,

Akgül²

2022

EJOSAT

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In this study, the effect of flash annealing heat treatment applied at 680 oC for 5 minutes on the magnetic properties of NdFeB-based permanent magnet alloys produced by melt spinning method, which is one of the fast solidification methods, was investigated by using a very fast heating and cooling rate of 300 K/s. The obtained results showed that there was a remarkable improvement in the magnetic properties of the alloys with the applied heat treatment. Mainly, the hard magnetic properties were optimized by enhancing magnetic remanence from 21.64 emu/g to 55.76 emu/g, magnetic coercivity from 1184.15 Oe to 9146.30 Oe, and maximum energy product from 4.06 kJ/m3 to 62.02 kJ/m3 respectively.

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“…Uygun üretim yönteminin seçimi, ısıl işlem, tane sınırı difüzyonu prosesi (GBDP), alaşımlama bu prosesler arasında yer almaktadır [6][7][8][9][10]. Hızlı katılaştırma yöntemlerinden birisi olan ergiyik eğirme prosesi ile oldukça yüksek soğutma hızları kullanılarak amorf ve nispeten ince tane dağılımına sahip bir mikroyapı ve sonuç olarak, üstün manyetik özelliklere ulaşmak mümkündür [11][12][13][14]. NdFeB mıknatısların manyetik özelliklerinin, ısıl işlemle birlikte modifiye edildiği bilinmektedir [15].…”

Section: Introductionunclassified

Effect of heat treatment time on magnetic properties of NdFeB-based permanent magnetic alloys

Yılmaz¹,

Akgül²

2022

EJOSAT

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In our current study, NdFeB-based permanent magnet ribbon alloys were produced by using melt spinning method, which is one of the rapid solidification methods and very common in the production of ribbon-shaped, amorphous and/or semi-crystalline alloys. During the production of each NdFeB alloy, 15 wt.% of waste magnet was included in the composition of the alloys. The produced permanent magnet alloys were heat treated for 5 and 10 minutes by using a heat treatment temperature of 710 °C and very high heating and cooling rates of 285 K/s. The effect of the heat treatment time applied at the same temperature on the magnetic properties of the strip alloys was investigated. While the increase in heat treatment time resulted in a remarkable change in magnetic coercivity and maximum energy product properties, there was not much change in the properties such as saturation magnetization and magnetic remenance. As clearly seen, increasing heat treatment time resulted in a continuous decrease in magnetic coercivity from 5030.5 Oe to 2279.4 Oe, maximum energy product first showed a dramatic increase from 62.02 kJ/m3 to 103.73 kJ/m3, and then a dramatic decrease to 38.63 kJ/m3, indicating a decrease in the permanent magnetism of the alloy.

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Effect of Fe-Ni Substitution in FeNiSiB Soft Magnetic Alloys Produced by Melt Spinning

Cited by 7 publications

References 50 publications

Effects of B Addition on the Microstructure and Microhardness of Melt-Spun Al-7075 Alloy

Effects of B Addition on the Microstructure and Microhardness of Melt-Spun Al-7075 Alloy

Effects of Heat Treatment and on Magnetic Properties of NdFeB Based Permanent Magnet Alloys

Effect of heat treatment time on magnetic properties of NdFeB-based permanent magnetic alloys

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