Studies of Fe-Ti rolled alloys for use in electrical machines

• Grant number: 15/25461-6
• Support Opportunities: Scholarships in Brazil - Master
• Start date: May 01, 2016
• End date: February 28, 2018
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Cristina Bormio Nunes
• Grantee: Guilherme Origo Fulop
• Host Institution: Escola de Engenharia de Lorena (EEL). Universidade de São Paulo (USP). Lorena , SP, Brazil

Abstract

The zero magnetostriction is an interesting property for the development of magnetic devices, such as flux gate sensor in order to produce sensors with lower noise levels. In addition, plates used in power transformers cores also require to have low magnetostriction values, to reduce noise and consequent heating, which may ultimately reduce the lifetime of the equipment. Within applications involving power supplies, transformers are strategic and more than ever, depending on the location of these, the reduction of environmental noise has become crucially important. The limited spaces of cities and strict noise control laws require extra efforts to build power transformers.The most commonly used material in applications that require low magnetostriction is based on Fe-Si alloys. The Fe-Ti has magnetostrictive behavior very similar to that of Fe-Si, as in magnitude either the change with the composition. However, the maximum values of magnetostriction, even before saturation is the responsible for the noise generated in electrical machines. Further, it is important to know both the longitudinal magnetostriction as to cross depending on the configuration of the core of such machines. In this work we will produce Fe-Ti alloys containing 3.0% and 4.0 mass% of Ti in arc furnace and then proceed to the rolling of the material. The rolling is carried out in several steps. The early rolling steps will be hot, intermediate stages warm and one or two final steps cold (room temperature) with subsequent heat treatment after the last cold rolling step. The electrical and magnetic properties will be evaluated and compared with the commercial Fe-Si. (AU)

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)

FULOP, G. O.; DIAS, M. B. S.; SANDIM, H. R. Z.; BORMIO-NUNES, C.. High saturation magnetic induction and low magnetostriction of a novel ferritic Fe-Ti alloy compared to a non-oriented silicon steel. Journal of Magnetism and Magnetic Materials, v. 527, JUN 1 2021. (15/25461-6, 18/14939-0)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

FULOP, Guilherme Origo. Study of rolled Fe-Ti alloys for using in electric machines. 2018. Master's Dissertation - Universidade de São Paulo (USP). Escola de Engenharia de Lorena (EEL/ASDI) Lorena.