常化冷却工艺对低温取向硅钢组织及析出相的影响.pdf

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1、TransactionsofNonfe!rrousMetals爨Avai：lableonSlinecaitewnww~．secieDnceidrierect．ctomSocietyofChinaPressTrans．NonferrousMet．Soc．China24(2014)77O一776WWW．tnmsc．errEffectofnormalizingcoolingprocessonmicrostructureandprecipitatesinlow-temperaturesiliconsteelHuiLI，Yun．1iFENG，MengSONG，Jing．1o

2、ngLIANG，Da．qiangCANG1．CollegeofMetallurgyandEnergy,HebeiUnitedUniversity,Tangshan063009，China；2．SchoolofMetallurgicalandEcologicalEngineering，UniversityofScienceandTechnologyBeijing，Beijing100083，ChinaReceived6March2013；accepted22October2013Abstract：Microstructure．precipitateandmagnet

3、iccharacteristicoffinalproductswithdiferentnormalizingcoolingprocessesforFe一3．2％Si1ow．temperaturehot．rolledgrain．orientedsiliconstee1wereanalyzedandcomparedwiththehot—rolledplatebyopticalmicroscopy(OM)，transmissionelectronmicroscopy(TEM)，andenergydispersivespectrometry(EDS)．Theresults

4、showthat，thesurfacemicrostructureisuniform。theproportionofrecrystallizationinmatrixincreases，andthebandingtexturesarenarrowed；theprecipitates．whosequantityinnormalizedplateismorethanthatinhot．rolledplategreatly,aremainlyA1N，MnS，compositeprecipitates(Cu．Mn)Sandsoon．Normalizingtechnolog

5、ywithatemperatureofl120。C，holdingfor3min，andatwo—stagecoolingisamostadvantagedmethodtoobtainorientedsiliconsteelwithsharperGosstextureandhighermagneticproperties，owingtotheuniformsurfacemicrostructuresandtheobviousinhomogeneityofmicrostructuresalongthethickness．Thenormalizingtechnolog

6、ywiththetwo．stagecoolingistheoptimumprocess．whichcangeneratemorefineprecipitatesdispersedoverthematrix，andbebeneficialforfinishedproductstogethighermagneticproperties．Keywords：1owtemperaturegrain—orientedsiliconsteel；normalizingcoolingprocess；microstmcture；precipitate；magneticproperty

7、normalizingprocess，asignificantstepforproducing1IntrOducti0nlow．temperaturegrain．orientedsiliconsteel，isneededforhot．rolledplate．InRefs．『12，13】，theeffectsofControllingtheinhibit0rpreciselyisakeydiferentnormalizingtemperaturesonmicrostructureandtechnologyfortheproductionoforientedsilic

8、onste