资源描述：
《A Comparison of the High-Temperature Oxidation of 17Cr-2Ni and 18Cr-8Ni Austenitic Stainless Steels at 973 K》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、OxidationofMetals,Vol.49,Nos.3/4,1998AComparisonoftheHigh-TemperatureOxidationof17Cr±2Niand18Cr±8NiAusteniticStainlessSteelsat973KJ.Botella,*C.Merino,²andE.Otero²ReceivedJanuary27,1997;revisedJune20,1997Theoxidationbehaviorinairat973Koftheausteniticstainlesssteels18Cr±8Niand17Cr±2.5Ni±10.5Mn
2、±2Cu±0.17N(low-nickelcontent),wasstudiedinathermobalance.Thesteelswereheatedfromroomtemperatureupto973K-1at10Kmin,oxidizedfor80hrandthencooledtoroomtemperatureat-1-280Kmin.Thetwosteelshadthesameweightgains,0.18mgcm,whichisequivalenttooxidationlayersabout1.15mmtheoreticalthickness.Inboth-1-2c
3、ases,thegeneralshapesoftheDWS(mgcm)curvesvs.t(hours)wereparabolic,butX-raydiffractionoftheoxidizedsurfaces,surfaceandcross-sectionopticalmicroscopyandSEMobservationsandEDSmicroanalysisshowimportantdifferencesbetweenthem.KEYWORDS:AISI304;low-nickelausteniticstainlesssteel;hightemperature;high
4、manga-nese;isothermalairoxidation.INTRODUCTION1±10AISI304formsCr2O3scalesathightemperaturesinoxidizingatmos-pheres.DuetoitsCrcontent,thetemperaturebetweengoodandbadoxi-5,11dationbehaviorforthissteelisabout1023K.Astainlesssteelwithabout2%Nihasbeendeveloped,usingrelativelyhighMnconcentrationst
5、oreplacesomeofthenickel.Thenewsteeliscompetitivewithtype304formostapplications,duetoitsmechanicalproperties,deformability,stability,*CentrodeInvestigacioÂnyEnsayos,Acerinox,11379Cadiz,Spain.²DepartamentodeCienciadeMateriales,FacultaddeQuimica,UniversidadComplutense,28040Madrid,Spain.2970030-
6、770Xy98y0400-0297$15.00y0Ó1998PlenumPublishingCorporation298Botella,Merino,andOtero12,13weldability,corrosionresistance,etc.However,therearenoreferencestotheoxidationofthissteel,althoughthein¯uenceofMnintheoxidation14,15processofno-nickelorlow-nickelstainlesssteelshasbeenstudied.EXPERIMENTAL
7、PROCEDURESThecompositionsofthematerialsusedforthisstudyappearinTableI.MechanicaltestresultsappearinTableII.Bothmaterialswerecoldrolled,annealed,andpickled.Testspecimensof20mm310mm3thicknesswereprepared.Afterward,theywerepolishedwithSiC#1000,cleaned
