Study of the texture influence at stress annealing effect (400°C) at power loss of grain-oriented electrical steel

• Grant number: 21/03604-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: June 01, 2021
• End date: January 31, 2022
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Mateus Botani de Souza Dias
• Grantee: Henrique Izukawa
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

A country's economic growth is related to its energy consumption. Hence, the development of new procedures that can reduce the power losses of grain-oriented electrical steels (GO) could result in more efficient transformers, decreasing the power loss in smart grids. Recently, it has been demonstrated that stress annealing could reduce the power losses of grain oriented electrical steel. However, there was a considerable variation of this stress annealing effect for the samples treated at the same condition. It could infer that another factor could modify the stress annealing effect. One of the hypotheses is related to the crystallographic texture intensity, which varies between the samples. In this work, the stress annealing efficiency will be measured, i.e., power loss variation, and the crystallographic texture intensity of the samples. Thus, the stress annealing condition will be held constant for all the samples (400°C, 40 MPa, and 20 minutes). Furthermore, to explain the power loss variation due to stress annealing, the coercive field and remanence will be evaluated too.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DIAS, M. B. S.; FULOP, G. O.; FARDIN, J. V. B.; NAKAMOTO, M.; IZUKAWA, H.; JABUR, A. A.; LANDGRAF, F. J. G.. Stress annealing effects on magnetic properties of grain oriented electrical steel under compressive stress. Journal of Magnetism and Magnetic Materials, v. 557, p. 7-pg., 2022-09-01. (21/03604-0, 21/04412-8, 21/03926-8, 17/11645-3)