This study proposes the application of low-field magnetic analysis (LFMA) as an alternative nondestructive evaluation method for the detection of microstructural changes of duplex stainless steel due to spinodal decomposition mechanism in a process known as “475°C embrittlement.” Structural, morphological, chemical, mechanical, and magnetic characterizations were performed. Two magnetic methods were used: magnetization versus field measurements at 300 K using a commercial magneto of meter and LFMA testing. The results showed a convergent behavior in agreement with the literature. Experimental results conclusively indicated that the new methodology is consistent and sensitive to the 475°C embrittlement process.
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This research was supported by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brazil (CAPES) – Finance Code 001.
General financial support received from CAPES. No interference with study design and data analysis.
Conflicts of interest
The authors declare that there are no known conflicts of interest.
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Silva, D.D.S., Raimundo, R.A., Morales, M.A. et al. Evaluation of the spinodal decomposition mechanism in 22Cr–5Ni duplex stainless steel using low-field magnetic analysis. MRS Communications (2021). https://doi.org/10.1557/s43579-021-00057-5
- Phase transformation
- Second phases
- Magnetic properties
- Hall effect