摘要
通过对3种不同成分的无取向硅钢退火板进行微观组织观察以及分别使用XRD和EBSD进行宏观织构和微观织构观察,研究了3种典型元素对无取向硅钢组织和再结晶织构的影响。结果表明:无取向硅钢再结晶组织对其磁性能有影响,晶粒尺寸越大,无取向硅钢的磁性能越好,1.35Si-0.25Mn-0.28Al的再结晶平均晶粒尺寸达51.6μm,铁损值达3.577 W/kg。Si和Al元素有利于平均晶粒尺寸的增大,Mn含量的提高有利于减少夹杂物对晶粒长大的限制。无取向硅钢再结晶织构主要由强的γ织构(特别是{111}<112>织构)和弱的立方织构以及高斯织构等组成。有利织构中,立方{100}<001>织构和旋转{100}<011>立方织构含量较高,1.35Si-0.25Mn-0.28Al钢中立方织构含量达8.2%,1.33Si-0.17Mn钢中旋转立方含量达7.8%,有利织构含量越高,磁感应强度值越大,1.35Si-0.25Mn-0.28Al钢的磁感应强度达1.739 T。铜型{112}<111>织构和黄铜{110}<112>织构组分含量较低,1.33Si-0.17Mn钢在退火样品中黄铜织构最多,其比例仅为1.4%。无取向硅钢的化学成分对织构组成有影响,Al和Si含量的增加有利于{111}<121>织构和立方织构组分的增加、不利于{111}<110>组分和高斯织构增加,在1.35Si-0.25Mn-0.28Al钢中{111}<121>织构的含量达44.3%而{111}<110>织构含量为17.2%,高斯织构含量仅为1.2%。Mn的含量一定程度上有利于增加无取向硅钢中旋转立方织构的含量。
Microstructure of three non-oriented electrical steels with different compositions was observed by metallographic analysis. The microtexture and macro-texture of the steels were analyzed by EBSD technique and XRD. The effect of three typical elements on texture and microstructure of the non-oriented electrical steels was studied. The results indicate that recrystallized microstructure in the non-oriented electrical steels has a significant effect on the magnetic properties. The iron loss is decreased by the increasing average grain size. The average grain size is 51. 6 μm and the iron loss is 3. 577 W / kg in 1. 35Si-0. 25Mn-0. 28 Al steel. Effect of the elements on the microstructure of the steels was analyzed. Si and Al eloments promote the growth of grains and increasing Mn content reduces the effect of inclusions on impeding the growth of grains. Recrystallized textures are comprised of strong γ-fiber textures,weak cube texture and weak Goss texture. Among favorable components,the large amount of cube texture and rotated texture are observed while almost no copper and brass textures exist in the annealed steel samples. The cube texture in 1. 35Si-0. 25Mn-0. 28 Al steel and the rotated cube texture in 1. 33Si-0. 17 Mn steel reach 8. 2% and 7. 8%,respectively. The more favorable textures exist,the larger the flux density is in the annealed sheets. The flux density of 1. 35Si-0. 25Mn-0. 28 Al steel attains to 1. 739 T. The amount of cupper texture is only 1. 4% in 1. 33Si-0. 17 Mn steel. Increasing contents of Al and Si can increase the proportions of { 111} 121 texture and cube texture but decrease the contents of { 111} 110 texture and Goss texture. In 1. 35Si-0. 25Mn-0. 28 Al steel,the { 111} 121 component occupies 44. 3% while the { 111} 110 component accounts for 17. 2% and Goss texture only takes up 1. 2%. The amount of { 100} plane textures,especially rotated cube texture,is affected by the Mn content.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2016年第1期87-92,共6页
Transactions of Materials and Heat Treatment
基金
中央高校基本科研业务费专项资金资助项目(新教师基金TP-A3类
编号:FRF-TP-15-063A3)
关键词
无取向硅钢
织构
组织
磁性能
non-oriented silicon steel
microstructure
texture
magnetic property
