Ordering phenomena in Fe-Si alloys with variable Si-content (0.2-11.7 wt.%) and thermomechanical processing

Authors

  • D. Ruiz Ghent University, Dpt. Metallurgy and Materials Science; Ghent University, Dpt. Subatomic and Radiation Physics
  • T. Ros-Yáñez Ghent University, Dpt. Metallurgy and Materials Science
  • R. E. Vandenberghe Ghent university, Dpt. Subatomic and Radiation Physics
  • E. De Grave Ghent university, Dpt. Subatomic and Radiation Physics
  • Y. Houbaert Ghent University, Dpt. Metallurgy and Materials Science

DOI:

https://doi.org/10.3989/revmetalm.2004.v40.i5.291

Keywords:

High Si-steel, electrical steel, Mössbauer spectroscopy, order-disorder.

Abstract


Fe-Si electrical steel around 6.5 wt. % Si is an optimum material for soft magnetic applications. Nevertheless, the brittleness appearing above 3.5 wt. % Si makes the cold processing very difficult to carry out. It is generally believed that the embrittlement is caused by order/disorder phenomena. Mössbauer spectroscopy was used to investigate the ordering processes in several Fe-Si-alloys with up to 11.7 wt. % Si. Type and degree of ordering were determined and results show that the alloys are never random solid solutions and their order degree increases with the silicon content. In addition, the effect of the thermomechanical processing was analysed. It is shown that slow cooling promotes B2 ordering while fast cooling does the opposite. On the other hand, cold rolling tends to cause disordering on the alloys.

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Published

2004-10-30

How to Cite

Ruiz, D., Ros-Yáñez, T., Vandenberghe, R. E., Grave, E. D., & Houbaert, Y. (2004). Ordering phenomena in Fe-Si alloys with variable Si-content (0.2-11.7 wt.%) and thermomechanical processing. Revista De Metalurgia, 40(5), 374–379. https://doi.org/10.3989/revmetalm.2004.v40.i5.291

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