## 1 Introduction
Focusing on microstructure and texture, these characteristics are mainly affected by the manufacturing process conditions, and particularly by the cold rolling step and subsequent recrystallization in continuous annealing treatment [20; 43; 44; 45]. Al and Si also show how to influence NGO steel britteness [46; 47; 48]. This introduces difficulties in the sheet's thickness reduction during cold rolling. For this specific purpose, in order to better homogenize the microstructure and the double stage cold rolling, the annealing of hot rolled coils represents a solution to solve this critical point. The introduction of intermediate annealing treatment allows to obtain further homogenization and reduces the risk of breakage during thickness reduction. [PERSON] et al. [39] demonstrated that a two-step cold rolling process allows to form coarse grain with a strong [110]\(<\)001\(>\) (Goss) and near Goss texture. In electrical steels, \(<\)001\(>\) is the easy magnetization direction, and both Goss and cubic orientation are ideal for magnetic properties [49; 50]. After the double-pass cold rolling, the recrystallization during continuous annealing is essential to obtain a strong \(<\)001\(>\) direction for superior magnetic properties. The parameters of continuous annealing significantly influence the final microstructure, and the thermal treatment strictly depends on how the hot rolled and cold rolled strips are produced. The aim of continuous annealing in NGO electrical steels at final thickness is to achieve a large grain size in the range of 100-150 \(\upmu\)m, a microstructure free of non-metallic inclusions, and a characteristic isotropic magnetic induction on the sheet plane (with optimization of texture and reduction of core losses) [51; 52; 53]. However, optimizing magnetic performance is not the only requirement for the class of these materials. For their application in electrical devices, the resistance to mechanical and vibration stresses is a crucial factor. Therefore, the ability to optimize the mechanical performance of NGO steels, without requiring excessive industrial effort, is currently a driving force for developing unconventional manufacturing processes [54; 55]. In recent years, the UFH treatment has gained much attention thanks to the possibility to optimize industrial production processes in terms of time, and consequently, productivity [56; 57; 58; 59]. The UFH passes through a rapidly alternating magnetic field and allows it to penetrate and generate eddy currents inside the metallic material, thereby providing an electrical heating [60; 61; 62; 63]. The UFH exploits an inductor used to heat-treat specific areas faster and with a lower consumption of energy compared with conventional heat treatment, and with several advantages such as shorter processing times, high flexibility, and localized annealing. The main parameters that characterize this rapid annealing are the heating rate (HR) (the temperature variation over time during the heating phase) and the peak temperature (the maximum temperature reached at the end of the heat treatment). The UFH process has been successfully adopted in stainless steels [64; 65; 66; 67; 68; 69; 70], showing results such as those of standard industrial production. This is also confirmed by results collected in the bibliography [71; 57] that showed the effect of UFH on mechanical properties in comparison with conventional annealing treatment. A thermal cycle without a holding time, in the case of ferritic stainless steels, resulted in a product that was quite comparable to the industrial standard in a range of heating rates of between 500 and 1000 \({}^{\circ}\)C/s. As the holding time increased, the yield strength and tensile strength values remained almost constant, while the total elongation increased. In the case of austenitic stainless steels without any holding time at a peak temperature of 700 \({}^{\circ}\)C and a heating rate of 2 and 20 \({}^{\circ}\)C/s, the yield strength (Ys) increased up to 870 MPa with an improvement in ductility and elongation.