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

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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