“Steel and Iron Alloys.”

Hadfield, Robert

doi:10.1680/ec1897.45200.0030

Cited by 2 publications

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“…The two properties determine the energy conversion efficiency of SMMs within working frequency. As a result, metallic SMMs with high storage and loss of energy such as Si steel [12,13], are widely used in the Hz range, while metallic soft magnetic composites [14][15][16] and amorphous nanocrystals [17] can be used in the kHz range. With the development of sustainable and electrified world, none of SMMs can release full potential of efficient power conversion based on wide bandgap semiconductors [18,19].…”

Section: Introductionmentioning

confidence: 99%

New characteristic parameter of energy loss in permalloy

Li,

Yang,

Jin

et al. 2024

New J. Phys.

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Characteristic parameters of energy storage and loss in soft magnetic materials, product S of initial susceptibility χ_i and resonance frequency ω_r and product L of maximum χ_m^'' and half width ∆ω of imaginary part, were introduced in Permalloy films. Expressions of characteristic parameters were derived from Landau-Lifshits-Gilbert equation with a general anisotropic free energy model. It was found S= L equals to intrinsic quantity of soft magnetic materials Q=γM_s √(((H_∥+H_⊥ ))⁄H_∥ ), where γ is the gyromagnetic ratio, M_s is the saturation magnetization, and H_⊥ and H_∥ are mutually orthogonal effective magnetic fields. In the presence of eddy curent, it was found S remains equal to Q while L<Q results from inhomogeneity of microwave magnetic field caused by eddy current. Moreover, a linear scale of L/S versus Gilbert damping factor α was found in Permalloy films with different thicknesses. Hence, our findings provide a new perspective on energy storage and loss of soft magnetic materials.

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Section: Introductionmentioning

confidence: 99%

New characteristic parameter of energy loss in permalloy

Li,

Yang,

Jin

et al. 2024

New J. Phys.

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“…X120Mn12 (DIN 11.3401, A128) steel, invented by Sir R. A. Hadfield in the 19th century, is a well-known and the oldest predecessor of the advanced high-strength manganese steel grades currently being intensively improved. [1] Its excellent operational performances, particularly its high strength and toughness, have made it widely used in as-cast goods. However, a high level of strain hardening makes the steel impossible to deform even in a preheated state.…”

Section: Introductionmentioning

confidence: 99%

Features and Restrictions of Electroslag Remelting with Silica‐Bearing Slags for Lightweight High Manganese Steel

Medovar

Stovpchenko

Lisova

et al. 2023

steel research int.

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Experiments are conducted to investigate the electroslag remelting process of Fe‐(20‐30)Mn‐(10‐12.0)Al‐(1‐2)C (wt%) steel in a short collar mold using a characteristic silica‐bearing slag to improve nonmetallic inclusion morphology. The effect of the “one‐slag melt” with silica on the changes in the chemical composition of the ESR ingot along its height is studied. The observed silicon pick‐up in metal at ESR is caused by the interaction of silica‐bearing slag with aluminum from metal composition (10%), stipulated by the ESR process nature and cannot be avoided. CALPHAD prediction of phase formation at observed changes of metal chemistry is proved by microstructure and EDS investigations of as‐cast metal of remelted ingot. Silicon pick‐up in obtained limits does not change the morphology of the main phases in the remelted Fe–Mn–Al–Cr‐C‐(Si) steel, but the microhardness of the phases becomes higher. Due to the low speed of remelting provided by ESR TC, the as‐cast metal structure and nonmetallic inclusions are refined. Experiments show that high silica‐bearing slag is not convenient for remelting high aluminum steels because of silicon transfer into ESR ingot at slag's silica reduction by aluminum.

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“Steel and Iron Alloys.”

Cited by 2 publications

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New characteristic parameter of energy loss in permalloy

New characteristic parameter of energy loss in permalloy

Features and Restrictions of Electroslag Remelting with Silica‐Bearing Slags for Lightweight High Manganese Steel

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