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1、41?10?Vol暢41No暢102016?10?HEATTREATMENTOFMETALSOctober2016Nb元素對低碳Stellite合金激光熔覆層顯微組織和磨損性能的影響1,21,2344任方成,姚建華,劉蓉,陳新超,毛偉(1.浙江工業(yè)大學(xué)激光加工技術(shù)工程研究中心,浙江杭州310014;2.浙江省高端激光制造裝備協(xié)同創(chuàng)新中心,浙江杭州310014;3.卡爾頓大學(xué)機械與航空航天工程系,加拿大渥太華K1S5B6;4.博雷(中國)控制系統(tǒng)有限公司,浙江杭州311231)摘要:??????、???、X??????????????????
2、?Nb????Stellite???????????、???、???????????????。????,??Nb???????????,??????Nb????????б??????????????1П。???????????γ-Co?????Co3Mo、NbC??。????????,????bN?,??CbN????????,?????℃400?。??????????????bN??б????????????1П。????????????????、??????。關(guān)鍵詞:?Stellite??;????;Nb??;??中圖分類號:TG146
3、.1;TG174.44文獻標志碼:A文章編號:0254-6051(2016)10-0015-06EfefctofNbonmicrostructureandwearresistanceoflow-carbonStellitealloylasercladdingcoating1,21,2344RenFangcheng,YaoJianhua,LiuRong,ChenXinchao,MaoWei(1.ResearchCenterofLaserProcessingTechnologyandEngineering,ZhejiangUniversityo
4、fTechnology,HangzhouZhejiang310014,China;2.ZhejiangProvincialCollaborativeInnovationCenterofHigh-endLaser,HangzhouZhejiang310014,China;3.DepartmentofMechanicalandAerospaceEngineeringCarletonUniversity,OttawaOntarioK1S5B6,Canada;4.Bray(China)ControlsSystemCo.,Ltd.,HangzhouZ
5、hejiang311231,China)Abstract:EffectofNbadditiononmicrostructure,elementsandphasesdistribution,roomandhightemperaturewearpropertiesoflow-CStellitealloylasercladdingspecimenswasinvestigatedbySEM,EDS,XRDandpin-on-disctribometer.TheresultsshowthatadditionofNbrefinesthemicrostr
6、uctureofthecladdinglayerandalsoapproximatelydoublesthevolumefractionofstrengtheningphasescomparedwithoriginalalloyduetoformationofNbCwithslightlyincreasedCcontent.Themainphasesinthemicrostructureconsistofγ-CoandstrengtheningphasesCo3Mo,NbC.Adhesivewearisthemainwearmechanis
7、msforthealloywhichcontainsNbatroomtemperature.ThepresenceofNbCcarbidephaseenhancestwicethewearresistanceofthecladdinglayerat400℃.Themainwearmechanismsofthecladdinglayerincludeoxidativewearandadhesivewear.Keywords:low-carbonStellitealloys;lasercladding;Nbelement;wear?Stelli
8、te?????????,????????????????ь???????????????,??????????。????。?????????????,?????????Nb???