Magnetic sensing for microstructural assessment of power station steels: Magnetic Barkhausen noise and minor loop measurements

7th Sensors & their Applications

Wilson, J.W.^1 ; Karimian, N.^1 ; Yin, W.^1 ; Liu, J.^2 ; Davis, C.L.^2 ; Peyton, A.J.^1

School of Electrical and Electronic Engineering, University of Manchester, Manchester M60 1QD, United Kingdom^1

School of Metallurgy and Materials, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom^2

关键词: Elevated temperature;    Inspection methods;    Magnetic Barkhausen-noise;    Magnetic sensing;    Microstructural assessments;    Microstructural conditions;    Microstructural state;    Properties and materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/450/1/012041/pdf
DOI  :  10.1088/1742-6596/450/1/012041

来源: IOP

【 摘 要 】

There are currently no techniques available to monitor the microstructural condition of power station steel components in-service (at elevated temperatures). Electromagnetic (EM) inspection methods have the potential to provide a solution to this problem. Tests have been carried out on power generation steel (P9 and T22) samples with different microstructural states using major and minor B-H loop measurements and correlations established between EM properties and material properties such as Vickers hardness. These correlations will be used to develop a field deployable tool for the quantification of degradation in power station steels.