常化工艺对W470无取向硅钢组织和织构的影响

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中图分类号：TM275 文献标识码：A DOI：10.7535/hbkd.2026yx01001

Abstract：Toaddress the isue of significant deformed microstructures andundesirable textures inas-hot-rolled W470 nonoriented silicon steelshetsproduced without mold electromagneticstiring，electronbackscatered difraction（EBSD）was employedtosystematicallyinvestigatetheefectsofnormalizationprocessparametersontherecrystallzationbehavior，grain size，and texture evolution. The results reveal that the center layer of the W470 as-hot-rolled sheet retainsa substantial fraction of non-recrystallzedmicrostructure.Fordiferentnormalizingtemperatures，therecrystallzationfractioninthecenterlayer increases progressively with rising normalization temperature from 840°C to 960∘C ，achieving completenessat 930∘C .For different normalizing temperatures，at a constant temperature of 900∘C ，extending the holding time from1 to 9min leads to gradual recrystallization，with full recrystallization attainedafter 7min .The normalizedsheets exhibit a surface layer dominatedby{110）<110>and{114}<110>textures.Incontrast，thecenterlayer is characterized byacombinationof γ -fiber texture，copper texture （{112}⟨111⟩） ，and rotated cube texture. Both increasing the normalization temperature and prolonging theholding timeenhancetherecrystallzationfractionandconcurrently weaken theintensityof themagnetically unfavorable γ -fiber texture.This work elucidates the synergistic influenceof normalization temperature and holding time on the microstrctureandtexturedevelopmentof W47O non-oriented silicon steelproducedunderconditionsof lacking mold electromagnetic stirring，which provides some reference for achieving optimized microstructures and textures.

Keywords：physical metallrgy；non-oriented siliconstel；normalizationprocess；recrystalization；microstructure；texture

无取向硅钢是电机和变压器铁芯的核心制造材料，随着新能源产业对高能效材料需求的激增，优化无取向硅钢的磁性能成为研究热点[1]。（剩余13684字）