Nondestructive characterization of recovery and recrystallization in cold rolled low carbon steel by magnetic hysteresis loops
Keywords: 
Nondestructive characterization
Magnetic hysteresis loop.
Recovery.
Recrystallization.
Low carbon steel.
Issue Date: 
Sep-2007
Publisher: 
Elsevier
ISSN: 
0304-8853
Citation: 
Martinez-de-Guerenu, A., Gurruchaga, K., & Arizti, F. (2007). Nondestructive characterization of recovery and recrystallization in cold rolled low carbon steel by magnetic hysteresis loops. Journal of Magnetism and Magnetic Materials, 316(2), e842-e845.
Abstract
How structure sensitive parameters derived from hysteresis loops can provide nondestructive information about the evolution of the microstructure of cold rolled low carbon steel as a result of recovery and recrystallization processes during the annealing is shown. The coercive field, remanent induction and hysteresis losses can be used to monitor the decrease in the dislocation density during recovery. These parameters are also influenced by the average grain refinement that takes place during recrystallization, which compensates the variation produced by the annihilation of dislocations during recrystallization. The maximum of the induction and of the relative differential permeability are shown to be very sensitive to the onset and to the monitoring of the recrystallization, respectively. The correlations between coercive field and remanent induction and hysteresis losses can also be used to distinguish between recovery and recrystallization.

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