Abstract
Magnetic properties of boron-silicon-iron alloys with various amounts of carbon have been investigated by the measurement of magnetic induction at a magnetizing force of 800 Am−1. The amount of carbon was varied before and after hot rolling by adding carbon to the melts and by decarburization of hot bands at 700‡ C. Results show that high magnetic inductions are obtained from heats with 0.043 to 0.070 wt% carbon but that the heat with 0.024 wt% carbon does not result in high induction. Results also show that complete secondary recrystallization and high induction are obtained from heats whose hot bands have been decarburized to a level of 30 p.p.m. provided that the heat contained 0.043 to 0.070 wt% carbon during heating for hot rolling. From these results it can be said that carbon plays a significant role during heating for hot rolling in determining the texture and magnetic induction of boron-silicon-iron alloys.
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