Evaluation of Microstructure and Mechanical Properties of High-Strength Bainitic Cast Iron Using an Electromagnetic Sensor

High-strength bainitic cast iron is studied after isothermal hardening at 340°C for from 0.5 to 5 h with the use of a non-destructive eddy-current method for monitoring the microstructure and mechanical properties. Iron microstructure is studied by optical microscopy and x-ray diffraction analysis....

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Veröffentlicht in:Metal science and heat treatment 2017-09, Vol.59 (5-6), p.341-345
Hauptverfasser: Kashefi, M., Nateq, M. H., Kahrobaee, S.
Format: Artikel
Sprache:eng
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Zusammenfassung:High-strength bainitic cast iron is studied after isothermal hardening at 340°C for from 0.5 to 5 h with the use of a non-destructive eddy-current method for monitoring the microstructure and mechanical properties. Iron microstructure is studied by optical microscopy and x-ray diffraction analysis. Brinell hardness and the impact energy are determined. Correlation is established between electromagnetic sensor signal, microstructure, and mechanical properties. It is shown that induced voltage and normalized impedance may be used for non-destructive monitoring of the production process and cast iron quality.
ISSN:0026-0673
1573-8973
DOI:10.1007/s11041-017-0153-6