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Metals
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Advances on the Metallurgy of Electrical Steels
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Advances on the Metallurgy of Electrical Steels

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 3441

Special Issue Editor

Prof. Dr. Armando Salinas Rodríguez

E-Mail Website1 Website2
Guest Editor
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Saltillo, Ramos Arizpe 25900, Coahuila, Mexico
Interests: deformation processing; heat treatments; microstructure evolution; mechanical properties; advanced high-strength steels; electrical steels; Ni and Co superalloys; Zn coatings

Special Issue Information

Dear Colleagues,

The fields of applications for electrical steels are rapidly widening as a result of the environmental concerns associated with the use of fossil fuels and the need for more efficient devices for the generation, transportation and use of electricity.  In particular, the increasing production of electrical and hybrid-electrical vehicles is now a very important driving force for the growth of these high-value-added materials. According to recent reports, the demand for electrical steel in the automotive sector will nearly double in the short term. Therefore, basic and applied scientific research strongly linked with industrial technological developments are expected to generate the underlying knowledge needed to materialize the growth forecast for the production and use of this high-end soft magnetic material. Industrially, the driving force is the ever-increasing need for higher quality and reduced processing costs. This Special Issue of Metals is aimed at putting together, in a single volume, a collection of articles dealing with the most recent advances in metallurgical research aimed at increasing our understanding of the processing–microstructure–property relationships of GO and GNO electrical steels. Contributions ranging from alloy chemistry development to novel processing procedures, including strip casting, hot rolling, hot band annealing, cold rolling and primary and secondary recrystallization heat treatments are welcome. In particular, contributions on the effects of processing conditions on the evolution of the microstructure (grain size and texture) and final properties, such as magnetic susceptibility and core losses, are encouraged.

Prof. Dr. Armando Salinas Rodríguez
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Electrical steel
  • Abnormal-grain-growth inhibitors
  • Hot band annealing
  • Hot and cold rolling
  • Primary and secondary recrystallization
  • Microstructure and texture evolution
  • Soft magnetic materials
  • Magnetic susceptibility
  • Core losses

Published Papers (1 paper)

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Research

13 pages, 3625 KiB  
Article
Effect of Cold Rolling Prior to Annealing on the Grain Size-Energy Losses Relationship in a Low Carbon Grain Non-Oriented Semi-Processed Electrical Steel
by Nancy Margarita López-Granados, Emmanuel José Gutiérrez-Castañeda and Armando Salinas-Rodríguez
Metals 2022, 12(7), 1211; https://doi.org/10.3390/met12071211 - 17 Jul 2022
Viewed by 2961
Abstract
In this work, the effect of cold deformation prior to annealing treatment on the microstructure and magnetic hysteresis energy losses in a low carbon grain non-oriented semi-processed electrical steel with 0.60 mm thickness was investigated. The samples were subjected to different percentages of [...] Read more.
In this work, the effect of cold deformation prior to annealing treatment on the microstructure and magnetic hysteresis energy losses in a low carbon grain non-oriented semi-processed electrical steel with 0.60 mm thickness was investigated. The samples were subjected to different percentages of deformation, in a range of 5–20% reduction and annealed at temperatures between 650 and 950 °C for 60 min, these were characterized by Optical Microscopy. Meanwhile the energy losses were calculated from the magnetic hysteresis loops using a Vibrating Sample Magnetometer. The experimental results showed that cold deformation increases energy losses by 50% when the steel is deformed 20%, due to microstructural defects that are introduced to the material during deformation. The presence of the microstructural defects was verified through measurements of Full Width at Half Maximum by means of X-ray diffraction. On the other hand, it was observed that annealing at temperatures below Ac1 causes only small changes in the microstructure of the steel, however, it promotes the recovery of magnetic properties by 50% with respect to the deformed material. In contrast, when the material is annealed between Ac1 and Ac3 (α+γ) magnetic properties are recovered ~33% with respect to the initial state and, at values higher than 65% compared to the state of greatest deformation (20%), as a result of both microstructural modification and the evolution of the grain size experienced by the material. Full article
(This article belongs to the Special Issue Advances on the Metallurgy of Electrical Steels)
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