低温Hi-B钢氮含量和高温退火时升温速度对磁性能的影响  

The effects of nitrogen content in low-temperature Hi-B steel and heating rate during high-temperature annealing on magnetic properties

作　　者：孔德南[1] Kong Denan(Anyang Iron&SteelGroupCo.,Ltd.,Anayng 455000,Henan,China)

机构地区：[1]安阳钢铁集团有限责任公司,河南安阳455000

出　　处：《特钢技术》2024年第2期1-4,共4页Special Steel Technology

摘　　要：试验过程中发现,当只改变氮含量时,随着氮含量的增加磁性能逐步升高,当氮含量增加到一定程度后磁性能变差,随着氮含量的继续增加,磁性能又逐步得到改善。高温退火650~1190℃温度区间,随着升温速度的增加,磁性能呈现先升高后趋稳的趋势。当升温过程中,适当降低1000~1190℃的升温速度时,磁性能得到了进一步改善。分析认为,氮含量和升温速度对磁性能的影响,主要是因为对二相粒子的抑制力产生了影响。在650~1000℃采用较高的升温速度可有效减小二相粒子的粗化程度,在1000~1190℃二次再结晶温度区间,适当降低升温速度,可在二次再结晶过程中,使二相粒子逐步粗化,保持小偏差角Goss晶粒长大优势,提高磁性能。During the experiment,it was found that when only the nitrogen content was changed,the magnetic 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 nitrogen content.In the temperature range of 650~1190℃for high-temperature annealing,the magnetic properties show a trend of first increasing and then stabilizing with the increase of heating rate.When the heating rate of 1000~1190℃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 influence of the inhibition force on two-phase particles.In the temperature range of 1000~1190℃,the heating rate can be appropriately reduced,and the two-phase particles can be gradually coarsened in the process of secondary recrystallization,maintaining the advantage of Goss grain growth at a small deviation angle and improving the magnetic properties.

关 键 词：Hi-B 高温退火 氮 升温速度 二相粒子 ALN 

分 类 号：TM275[一般工业技术—材料科学与工程]