The effects of nitrogen content in low-temperature Hi-B steel and heating rate during high-temperature annealing on magnetic properties
During the experiment,it was found that when only the nitrogen content was changed,the mag-netic properties gradually increased with the increase of nitrogen content,and the magnetic properties deteriorated when the nitrogen content increased to a certain extent,and gradually improved with the continuous increase of ni-trogen content.In the temperature range of 650～1 190℃ for high-temperature annealing,the magnetic proper-ties show a trend of first increasing and then stabilizing with the increase of heating rate.When the heating rate of 1 000～1 190℃ is appropriately reduced during the heating process,the magnetic properties are further improved.It is concluded that the influence of nitrogen content and heating rate on magnetic properties is mainly due to the in-fluence of the inhibition force on two-phase particles.In the temperature range of 1 000～1 190℃,the heating rate can be appropriately reduced,and the two-phase particles can be gradually coarsened in the process of second-ary recrystallization,maintaining the advantage of Goss grain growth at a small deviation angle and improving the magnetic properties.
Hi-Bhigh temperature annealingnitrogenheating ratetwo-phase particlesAlN
NETL
NSTL
万方数据
