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Variablesaffectinggrowthandmorphologyoftheintermetalliclayer(Fe2Al5)M.Yousaf,J.Iqbal,M.AjmalPII:S1044-5803(11)00054-4DOI:doi:10.1016/j.matchar.2011.03.004Reference:MTL6947Toappearin:MaterialsCharacterizationReceiveddate:4September2010Reviseddate
2、:13March2011Accepteddate:16March2011Pleasecitethisarticleas:YousafM,IqbalJ,AjmalM,Variablesaffectinggrowthandmorphologyoftheintermetalliclayer(Fe2Al5),MaterialsCharacterization(2011),doi:10.1016/j.matchar.2011.03.004ThisisaPDFfileofanuneditedmanuscriptthathasbeen
3、acceptedforpublication.Asaservicetoourcustomersweareprovidingthisearlyversionofthemanuscript.Themanuscriptwillundergocopyediting,typesetting,andreviewoftheresultingproofbeforeitispublishedinitsfinalform.Pleasenotethatduringtheproductionprocesserrorsmaybediscover
4、edwhichcouldaffectthecontent,andalllegaldisclaimersthatapplytothejournalpertain.ACCEPTEDMANUSCRIPTVariablesaffectinggrowthandmorphologyoftheintermetalliclayer(Fe2Al5)*M.Yousaf,J.Iqbal,M.AjmalDepartmentofMetallurgical&MaterialsEngineering,UniversityofEngineeringa
5、ndTechnology,Lahore-54890,Pakistan*Correspondingauthor,Tel.:+92429029501;fax:+92429250202E-mailaddress:yousaf74@gmail.comAbstractAsteelsubstratecontaining0.4%carbonwashot-dipaluminizedinpureAlandAl-11wt.%Cualloy.Duringthealuminizingprocess,anintermetalliclayer(
6、Fe2Al5)wasdevelopedattheinterfacebetweenthealuminizingmetalandthesteelsubstrate.Theeffectsonitsgrowthandmorphologyresultedduetovariationincompositionsofaluminizingmetal,carboncontentofthesteelsubstrate,aluminizingtemperatures(675~950°C)anddippingtimes(1~10minut
7、es)wereinvestigated.InthepureAl,theintermetalliclayerwasthickanditshowedafinger-likegrowthwiththesubstrate.WhileintheAl-Cualloy,itwasthinenoughanditsgrowthwasalmostsmoother.Itsthinningwasattributedtotheformationoftetragonalintermetallicphases,Al2CuandAl7Cu2Fe,o
8、nsurfaceofthealuminizedsteel.Inbothmelts,itsthicknessincreasedwithincreasingthealuminizingtemperaturesintherange675-775°C,whileabovethisrangefoundACCEPTEDMANUSCRIPTconstant.
