预览加载中，请您耐心等待几秒...

工艺参数对气泡搅拌法制备AZ91D镁合金半固态浆料显微组织的影响（英文）.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

工艺参数对气泡搅拌法制备AZ91D镁合金半固态浆料显微组织的影响（英文） Title:InfluenceofProcessParametersonMicrostructureofAZ91DMagnesiumAlloySemisolidSlurryPreparedbyBubbleStirringMethod Abstract: Thedemandforlightweightmaterialswithexcellentmechanicalpropertieshasincreasedsignificantlyinvariousindustries.Magnesiumalloyshavegainedattentionduetotheirlowdensityandhighstrength-to-weightratio.Thesemisolidslurryprocess,whichcombinestheadvantagesofbothliquidandsolidstates,hasemergedasapromisingmethodforthepreparationofmagnesiumalloys.ThisstudyaimstoinvestigatetheinfluenceofprocessparametersonthemicrostructureofAZ91Dmagnesiumalloysemisolidslurrypreparedbythebubblestirringmethod. Introduction: Magnesiumalloys,withtheirremarkableproperties,suchaslowdensity,highspecificstrength,andgoodcastingability,haveattractedconsiderableattentionaspotentiallightweightmaterials.However,theconventionalcastingmethodsformagnesiumalloysoftensufferfromseriouscastingdefects,suchasporosityandcoarsemicrostructure.Thesemisolidslurryprocess,whichinvolvespartiallysolidifyingthealloybeforecasting,hasbeendevelopedasasolutiontoovercometheselimitations. Methodology: Inthisstudy,AZ91Dmagnesiumalloysemisolidslurrywaspreparedusingthebubblestirringmethod.Variousprocessparameters,includingstirringtime,stirringspeed,bubblesize,andbubbledensity,wereinvestigatedtodeterminetheireffectonthemicrostructureofthesemisolidslurry.Themicrostructurewasanalyzedusingopticalmicroscopy,scanningelectronmicroscopy,andX-raydiffraction.Themechanicalpropertiesofthesemisolidslurrywereevaluatedthroughtensiletesting. Results: TheresultsshowedthattheprocessparametershadasignificantinfluenceonthemicrostructureoftheAZ91Dmagnesiumalloysemisolidslurry.Longerstirringtimeandhigherstirringspeedledtofinerandmoreuniformlydistributedprimaryalpha-Mgparticles.Thiscanbeattributedtotheincreasedshearforcesandnucleationratesduringthestirringprocess.Moreover,smallerbubblesizeandhigherbubbledensityresultedinamorerefinedmicrostructureduetotheincreasedactivenucleationsitesprovidedbytheb