摘要
借助Gleeble 3500热模拟试验机和HAADF-STEM＋EDX对比研究了Sb在无取向硅钢热变形组织中晶界偏析行为以及Sb对钢热塑性的影响,利用XRD技术分析了Sb对再结晶织构的作用。结果表明,Sb在700℃时发生最强烈晶界偏析,使得钢热塑性谷底加深和塑性凹槽增宽,恶化钢的高温热塑性;利用Sb晶界偏析,抑制不利织构γ纤维组分的形核和长大,立方织构与Goss织构组分明显增加,有效改善无取向硅钢的磁性能。因此,含Sb无取向硅钢热变形温度应避开700℃,将热变形温度选择稍高于750℃为宜,以改善其磁性能。
Grain boundary segregation behavior of Sb in hot deformation microstructure of non-oriented silicon steel and effect of Sn on hot ductility were studied by means of Gleeble 3800 thermal simulation tester and HAADF-STEM ＋ EDX analysis methods. Effect of Sb on recrystallization texture of non-oriented silicon steel was investigated by using X-Ray diffraction ODF. The results show that the maximum Sb grain boundary segregation about 700 ℃ and the worst hot ductility occur,which deepen and widen the ductility trough. The element Sb segregated at grain boundaries in non-oriented silicon steel can restrain { 111} texture development in the stage of nucleation and growth during recrystallization annealing treatment. The increasing cubic texture and Goss texture components are beneficial to the increase of magnetic induction and decrease of core loss. Therefore,the hot deformation temperature of non-oriented silicon steel containing Sb should be avoided at 700 ℃,and the hot deformation temperature should be selected slightly above 750 ℃ to improve the magnetic properties.
作者
李德超
董俊慧
陈海鹏
王海燕
Li Dechao;Dong Junhui;Chen Haipeng;Wang Haiyan(School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot Inner Mongolia 010051,China;School of Material and Metallurgy,Inner Mongolia University of Science and Technology,Baotou Inner Mongolia 014010,China;Inner Mongolia First Machinery Group Corporation,Baotou Inner Mongolia 014000_ Chin~＇~)
出处
《金属热处理》
CAS
CSCD
北大核心
2018年第11期1-5,共5页
Heat Treatment of Metals
基金
国家自然科学基金(51101083)
内蒙古自然科学基金(2017MS0518)
关键词
无取向硅钢
热变形
晶界偏析
织构
non-oriented silicon steel
hot deformation
grain boundary segregation
texture
