Detection of the magnetic easy direction in steels using induced magnetic fields

• Type: Article in International Scientific Journal
• Date: 2016-12

Authors

Edgard M. Silva (Author) Other; Alysson M. R. Paula (Author) Other; Josinaldo P. Leite (Author) Other; João P. Leite (Author) Other; Lucia S. S. Andrade (Author) Other; Victor Hugo C. de Albuquerque (Author) Other; João Manuel R. S. Tavares (Author) FEUP

Journal

Title: Metals

Vol. 6 No. 12

Initial page: 317

Publisher: MDPI

Indexing

ISI Web of Knowledge - 0 Citations

ISI Web of Science

Scopus - 6 Citations

INSPEC

Scientific classification

CORDIS: Technological sciences

FOS: Engineering and technology

Other information

Authenticus ID: P-00M-FVN

DOI: 10.3390/met6120317

Abstract (EN): Conventional manufacturing processes cause plastic deformation that leads to magnetic anisotropy in processed materials. A deeper understanding of materials characterization under rotational magnetization enables engineers to optimize the overall volume, mass, and performance of devices such as electrical machines in industry. Therefore, it is important to find the magnetic easy direction of the magnetic domains in a simple and straightforward manner. The Magnetic easy direction can be obtained through destructive tests such as the Epstein frame method and the Single Sheet Tester by taking measurements in regions of irreversible magnetization usually called domains. In the present work, samples of rolled SAE 1045 steel (formed by perlite and ferrite microstructures) were submitted to induced magnetic fields in the reversibility region of magnetic domains to detect the magnetic easy direction. The magnetic fields were applied to circular samples with different thicknesses and angles varying from 0¿ to 360¿ with steps of 45¿ . A square sample with a fixed thickness was also tested. The results showed that the proposed non-destructive approach is promising to evaluate the magnetic anisotropy in steels independently of the geometry of the sample. The region studied presented low induction losses and was affected by magnetic anisotropy, which did not occur in other works that only took into account regions of high induction losses.

Type (Professor's evaluation): Scientific

No. of pages: 11