低牌号无取向电工钢磁时效行为分析  

Analysis of magnetic aging behaviors in low grade non-oriented electrical steels

作　　者：吴凌康[1] 毛卫民[1] 杨平[1] 孟利[1] 

机构地区：[1]北京科技大学新金属材料国家重点实验室材料学系,北京100083

出　　处：《金属热处理》2011年第8期46-50,共5页Heat Treatment of Metals

基　　金：国家自然科学基金(50871015);北京科技大学冶金工程研究院基础理论研究基金(YJ2010-005)

摘　　要：选取了三种50W 800无取向电工钢,分析了化学成分、晶粒尺寸、织构、以及200℃时效处理48 h前后的磁性能和第二相粒子析出状态的变化。结果表明,钢板中第二相粒子的分布密度对钢板铁损有最重要的影响。降低钢中C、N元素含量,或改进钢板热加工参数以降低成品钢板中第二相粒子形成元素的过饱和度均有利于明显降低钢板磁时效过程中的铁损增幅。钢板中对磁性能有利的织构也有利于降低钢板铁损的时效幅度。The evolution of chemical composition,grain size,texture,as well as magnetic property after aging treatment at 200 ℃ for 48 h and distribution of second phase particles precipitation in three selected 50W800 non-oriented electrical steels were analyzed.The results show that the distribution density of second phase particles has great influence on core loss.Reducing C and N content,or improving hot-working parameters to reduce the supersaturation of elements forming second phase particles in production sheets are conducive to decrease the increment of core loss during magnetic aging process.The favorable texture for magnetic property in steel also helps reduce the core loss increment during aging.

关 键 词：无取向电工钢 磁时效 第二相粒子 析出 铁损 

分 类 号：TG142.77[一般工业技术—材料科学与工程]