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时间:2020-06-01
《钛含量对新型钨钛合金微观组织及力学性能的影响(英文).pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、RareMetalMaterialsandEngineeringAvailableonlineatwww.sciencedirect.cornVolume42,Issue6,June2013∞一OnlineEnglisheditionoftheChineselanguagejournaScienceDirectCitethisarticleas:RareMetalMaterialsandEngineering,2013,42(6):1108—1112E仟ectofTitaniumContentontheMiCrOS
2、trUCtUreandMechanicalPropertiesofTunten-TitaniumAlloyWangXing,DuanDongping,GuoYunshuInstituteofProcessEngineering,ChineseAcademyofSciences,Beijing100190,ChinaAbstract:Tungstenheavyalloys(WHAs)withfourdiferenttitaniumcontents(O.5%,1.O%,1.5%,2.0%,wt.%)wereprepar
3、edbypowdermetallurgy.Theinfluenceoftitaniumcontentonthemicrostructureandmechanicalpropertiesunderhighstrainrateswereinvestigated.Theresultsshowthatthetitaniumparticlesdisperseinthematrixwithdifferentmorphologyandthemaineffectiveelementisthediameterofthetitaniu
4、mparticles.Therearelotsofmicroholesinthetitaniumparticleswhenthediameteroftitaniumparticlesislargerthan20岫.Thetitaniumparticlesdonotdissolveinthematrixduringthesinteringprocessandtheinterfacesbetweentitaniumandtungsten,titaniumandmatrixaregood.TheresultsofHopk
5、insonStrikerBarindicatethatthedynamiccompressivestrengthishighestwhenthecontentoftitaniumis0.5%andthestrengthhaslittlechangeasthecontentoftitaniumincreasesfrom1.0%to2.0%under3700s~strainrate.IntheWHAwith2.0%titaniumcontent,theadiabaticshearbanding(ASB)isthemai
6、ndeformationmodeandthetitaniumintheASBisfragile,thetemperatureofthermalsofteningareaishigherthanthatofthetraditionalWHAsbecauseoftheexistenceoftitaniumparticles.TheadditionoftitaniumintheⅥsimprovestheadiabaticshearbandmgsusceptivity.Keywords:powdermetallurgy;t
7、itaniumcontent;tungstenheavyalloy;dynamicmechanicalproperty;adiabaticshearbandingTungstenheavyalloys(WHAs)havedrawnmuchattentionoftimelyalongtheadiabaticshearbandduringtheinrecentyearswithregardtotheirpotentialapplicationasanpenetratingprocess.However,theappli
8、cationofDUhasanti—armormaterialduetogoodmechanicalproperties.WHAs,raisedserious.1ong.termenvironmentalandhealthconcelTlS.bi—phasedcompositesmadeupoftungsten(bcc)particlesandPreciou
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