Analysis of edge microstructural characteristics and stamping formability of low carbon pickled steel sheets-中国期刊网

摘要 Themicrostructuralcharacteristicsandformabilityattheedgesoflowcarbonpickledsteelsheetshavebeeninvestigatedbasedonthegenerationofearingandcrackingdefectswhiledrawing.Themicrostructureoftheedgefeaturescoarsegrainsandmixedsizedgrains.Thestrengthofthesheetedgeisslightlylowerthanthatatthecenter.Besides,theformabilityisobviouslyworsened.Theplasticstrainratiosalongthelongitudinalandtransverseorientationsare0.31and0.6,respectively,withdistinctanisotropy.Theplasticstrainratioattheedgeisobviouslylowerthanthatatthemiddleofthesteelsheet.Theobservedmicrostructuralcharacteristicsandmechanicalpropertiesattheedgeofthesteelsheetcanbeattributedtothelowerrollingtemperatureinthetwo-phaseregionofpro-eutectoidferriteandaustenite.Thesedifferencesinmicrostructureandmechanicalpropertiesattheedgeofthesteelsheetleadtothegenerationofearingandcrackingdefectswhiledrawing.Themicrostructureandmechanicalpropertiesattheedgeoflowcarbonpickledsteelsheetscanbeimprovedviatheoptimizationoftherollingprocessandtheadjustmentofchemicalcomposition.

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Analysis of edge microstructural characteristics and stamping formability of low carbon pickled steel sheets

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Analysis of edge microstructural characteristics and stamping formability of low carbon pickled steel sheets

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