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Magnetic Barkhausen Noise Transient Analysis for Microstructure Evolution Characterization with Tensile Stress in
Jia Liu1, GuiYun Tian1,2, Bin Gao1
1School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.
Sensors (Basel, Switzerland)
|December 28, 2021
Summary
This study quantifies stress-induced microstructural changes using magnetic Barkhausen noise (MBN) transient analysis. The method effectively distinguishes between elastic and plastic deformation, offering potential for industrial stress evaluation.
Area of Science:
- Materials Science
- Physics
- Engineering
Background:
- Stress significantly impacts material microstructure, affecting component durability and service life.
- Previous stress measurement techniques lack quantification of time and spatial variations in micromagnetic properties and microstructure evolution across elastic and plastic ranges.
Purpose of the Study:
- To evaluate microstructure evolution under stress in elastic and plastic ranges using magnetic Barkhausen noise (MBN) transient analysis.
- To quantify transient size and number of Barkhausen events under stress using duration and intensity as eigenvalues based on a J-A model.
- To investigate the correlation between material microstructure and MBN transient eigenvalues for microscopic material status evaluation.
Main Methods:
- Magnetic Barkhausen noise (MBN) transient analysis.
- Application of a J-A model to define duration and intensity as eigenvalues.
- Observation of domain wall (DW) distribution and microstructure.
- Evaluation of microstructure evolution in silicon steel sheet and Q235 steel sheet.
Main Results:
- Duration and intensity exhibit distinct change trends in elastic versus plastic stress ranges.
- Fusion of duration and intensity eigenvalues differentiates microstructural changes under elastic and plastic deformation.
- Grain boundary migration and dislocation in the plastic range increase duration and intensity at grain boundaries compared to grain interiors.
Conclusions:
- The proposed MBN transient analysis method effectively correlates microstructure with transient micromagnetic properties.
- The method demonstrates potential for evaluating stress in both elastic and plastic ranges for industrial materials.
- Reproducibility was confirmed through evaluations on silicon steel and Q235 steel.
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