Effect of isothermal annealing on the magnetic properties of cold-rolled low-carbon steel with magnetic hysteresis-loop measurements
Vpliv izotermnega žarjenja na magnetne lastnosti hladno valjanega maloogljičnega jekla z meritvami magnetne histerezne zanke

english

2014

volume 48, issue 3

low-carbon steel    non-destructive testing    annealing    magnetic hysteresis 

Inštitut za kovinske materiale in tehnologije
(Obvezni izvod spletne publikacije)

The magnetic properties of ferritic steels including the coercive field and the remanent induction are sensitive to microstructural features such as the grain size and the dislocation density. In this paper the effect of isothermal-annealing treatments at different temperatures on the coercive field and the remanent induction of industrially cold-rolled low-carbon steel samples was investigated. The specimens were annealed at low (500 °C) and high temperatures (640 °C) in order to promote the recovery and recrystallization, respectively. A hysteresis-loop measuring apparatus, specifically designed and assembled for plate samples was used under different annealing conditions. Furthermore, microstructural changes were investigated using light microscopy and hardness measurement and were compared with the data extracted from the device. The result showed that the variation in measured Hc is an appropriate magnetic parameter for following the microstructural evolutions such as recovery and recrystallization.

06.11.2015