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Magnetic Barkhausen emission in lightly deformed AISI 1070 steel |
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| Authors: | J Capó Sánchez MF de CamposLR Padovese |
| Institution: | a Departamento de Física, Facultad de Ciencias Naturales, Universidad de Oriente, Av. Patr?cio Lumumba s/n, 90500 Santiago de Cuba, Cuba b EEIMVR—Universidade Federal Fluminense, Av. dos Trabalhadores 420, Vila Santa Cecilia, 27255-125 Volta Redonda, RJ, Brazil c Departamento de Engenharia Mecânica, Escola Politécnica, Universidade de São Paulo, Av. Prof. Mello Moraes, 2231, 05508-900 São Paulo, Brazil |
| Abstract: | The Magnetic Barkhausen Noise (MBN) technique can evaluate both micro- and macro-residual stresses, and provides indication about the relevance of contribution of these different stress components. MBN measurements were performed in AISI 1070 steel sheet samples, where different strains were applied. The Barkhausen emission is also analyzed when two different sheets, deformed and non-deformed, are evaluated together. This study is useful to understand the effect of a deformed region near the surface on MBN. The low permeability of the deformed region affects MBN, and if the deformed region is below the surface the magnetic Barkhausen signal increases. |
| Keywords: | Magnetic Barkhausen emission Strain Residual stress X-ray diffraction |
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