Dependence of Damage-Induced Magnetization on the Plastic Deformation for X80 Steel

Abstract:

Metal magnetic memory (MMM) method is a novel, passive magnetic method for inspecting mechanical degradation of ferromagnetic components. In this paper, the correlation between plastic deformation and the deformation-induced magnetic field was experimentally investigated for the X80 steel. Various tensile plastic deformations are introduced into test pieces with different initial discontinuities. The surface strain distributions and normal natural magnetic fields component are measured after the tensile testings. The results show that the normal natural magnetic fields component are effective in capturing different deformation stages under tensions, the relationship between the intensity of damage-induced magnetization and the maximum plastic strain follows a simple formula proposed in this paper.

• Periodical: Applied Mechanics and Materials (Volume 330)
• Pages: 106-111
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.330.106
• Online since: June 2013
• Authors: Qiang Wan, Li Ming Wei, Zhen Kai Zhou, Yun Fei Li
• Keywords: Metal Magnetic Memory (MMM), Natural Magnetic Fields, Plastic Deformation, Simple Formul

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