Effect of Typical Elements on the Heredity of Hot-rolled and Annealed Texture in Non-oriented Electrical Steel
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2017年第6期
论文作者：孙强 李志超 MI Zhenli DANG Ning
文章页码：1446 - 1452
摘 要：Macroscopic texture and microscopic orientation in hot-rolled and annealed sheets of nonoriented electrical steel were studied by XRD and EBSD techniques. The microstructure of hot-rolled and annealed samples was studied by OM. Experimental results indicate that a strong heredity is observed in texture evolution between hot-rolled texture and annealed texture. Typical elements have a large effect on the recrystallization microstructure and texture distribution. The texture distribution through thickness is highly affected by recrystallization in hot rolled sheets. The recrystallization is boosted by Si and Al. Goss grains originate from cracked initial <100> columnar grains. {110}<112>, {112}<111> and {111}<112> grains are related to Goss grains. In subsurface lay of hot rolled sheets, Al can strengthen Goss texture and weaken copper-type texture. {112}<111> texture and {110}<112> texture are strengthened by Si. In the central layers, {100}<001> texture and {111}<121> texture are weakened by Al. {100}<011> texture is increased by Al. Si can increase the proportion of γ-fiber texture and decrease that of {100}<011> texture. In annealed texture, {100}<001> texture and Goss texture are decreased by Al and Si. γ-fiber texture is increased by Si and {111}<121> texture is preferentially increased by Al. The recrystallized grain size is increased and iron loss of annealed sheets is reduced by Al and Si, which means that the magnetic properties are optimized by the Al and Si content.
孙强1，李志超2，MI Zhenli1，DANG Ning1
1. Institute of Engineering Technology, University of Science and Technology Beijing2. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing
摘 要：Macroscopic texture and microscopic orientation in hot-rolled and annealed sheets of nonoriented electrical steel were studied by XRD and EBSD techniques. The microstructure of hot-rolled and annealed samples was studied by OM. Experimental results indicate that a strong heredity is observed in texture evolution between hot-rolled texture and annealed texture. Typical elements have a large effect on the recrystallization microstructure and texture distribution. The texture distribution through thickness is highly affected by recrystallization in hot rolled sheets. The recrystallization is boosted by Si and Al. Goss grains originate from cracked initial <100> columnar grains. {110}<112>, {112}<111> and {111}<112> grains are related to Goss grains. In subsurface lay of hot rolled sheets, Al can strengthen Goss texture and weaken copper-type texture. {112}<111> texture and {110}<112> texture are strengthened by Si. In the central layers, {100}<001> texture and {111}<121> texture are weakened by Al. {100}<011> texture is increased by Al. Si can increase the proportion of γ-fiber texture and decrease that of {100}<011> texture. In annealed texture, {100}<001> texture and Goss texture are decreased by Al and Si. γ-fiber texture is increased by Si and {111}<121> texture is preferentially increased by Al. The recrystallized grain size is increased and iron loss of annealed sheets is reduced by Al and Si, which means that the magnetic properties are optimized by the Al and Si content.
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