简介：Inthepresentwork,anovelhybridcompositecomposedofTi-aluminidemulti-layeredpartandcontin-uous-SiCf-reinforcedTi-matrixpartusingavacuumhotpressing/hotisostaticpressure（VHP/HIP）sinteringprocesswassynthesized.Then,thedamagetolerancebehaviorofthishybridcompositewasstudiedbytensiletestsandinsituscanningelectronmicroscopy（SEM）three-pointbendingtests.Theresultsindicatethatthemechanicalpropertiesandcrackpropagationofthehybridcompositearestronglyinfluencedbytheextrinsictoughnessmecha-nism.Indetail,thecrackdeflectionofmulti-layeredcompositeandstrengtheningeffectofSiCf-reinforcedmatrixcompositeareobservedinthehybridcomposite.Owingtothestrengtheningeffectofcontinuous-SiCrre-inforcedTi-matrixpart,thetensilestrengthofhybridcompositeismuchhigherthanthatofneatTi-aluminidemulti-layeredcomposite.Furthermore,itisfoundthattheoptimaldamagetoleranceabilityisoptimizedwhenthenotchpositionislocatedattheTi-aluminidemulti-layeredpartduetothecrackdeflectionofmulti-layeredstructure.

简介：以便获得两高电镀物品迁居(他们)在高周波的表面的可靠性和罚款维的控制声学的波浪(锯)设备，4-layeredTi/Al-Mo/Ti/Al-Mo电极电影在128°Y-XLiNbO3上被调查由劈啪作响的底层免职。结果显示4-layered电影与常规Al-0.5wt.%Cu电影相比有改进他们可靠性。他们的一生比在5×的当前的密度测试的Al-0.5wt.%Cu电影的长约三倍107A/厘米2和200°C的温度。而且，4-layered电影容易在反应离子蚀刻被蚀刻，罚款维的控制为高周波的锯设备在模式复制期间被认识到。为4-layered电影，最佳瞬间数量和劈啪作响的参数为高他们可靠性是很重要的。

简介：ＣａｔｈｏｄｉｃＰｒｏｃｅｓｓｏｆＴｉ（Ⅳ）ｉｎＭｏｌｔｅｎＬｉＦ－ＮａＦＳｈｉＱｉｎｇｒｏｎｇａｎｄＤｕａｎＳｈｕｚｈｅｎ石青荣，段淑贞（ＵｎｉｖｅｒｓｉｔｙｏｆＳｃｉｅｎｃｅａｎｄＴｅｃｈｎｏｌｏｇｙＢｅｉｊｉｎｇ，Ｂｅｉｊｉｎｇ１０００８３，Ｃ...

简介：TheeffectofAl-3Ti-0.2C-5Sr(wt%)grainrefinerontherefiningperformanceandmodificationofA356alloywasinvestigatedusingopticalmicroscope(OM).ThemorphologyandcrystalstructureofternaryAl-Ti-SrphasesinAl-3Ti-0.2C-5Srrefinerwereanalyzedbyscanningelectronmicroscopy(SEM)andtransmissionelectronmicroscopy(TEM).TheresultsshowthattheternaryAl-TiSrphasesinAl-3Ti-0.2C-5SrrefinercanpromotethegrainrefiningefficiencyofA356alloy.TheternaryAl-Ti-Srphasesco-existintwomorphologies,i.e.,blocky-likephaseandsurround-likephase,besides,whichbothhavethesamechemicalcompositionofAl_(34)Ti_3Sr.ThecrystalstructureofAl_(34)Ti_3Srisface-centeredcubic,andthelatticeparameterisdeterminedtobeabout1.52nm.

简介：Extractionoftitanium(Ⅳ)fromrealchlorideleachliquorofilmenitewascarriedoutwith0.1molL~(-1)di-(2-ethylhexyl)phosphoricacid(HDEHP)inkerosene.EquilibriumandkineticsstudiesforTi(Ⅳ)werecarriedoutinthepresenceofimpuritiesthatwereleachedwithTi(Ⅳ).ParametersaffectingextractionrateofTi(Ⅳ)fromchloridemediainthepresenceofFe(Ⅲ),Mg(Ⅱ),andAl(Ⅲ)werestudiedtoevaluatethestoichiometryofextractedTi(Ⅳ)species.ItisfoundthattheextractionrateofTi(Ⅳ)isdependentontheextractantconcentrationandpHofsolution.Undertheoptimumconditions,morethan95%Ti(Ⅳ)canbeextracted.Onthebasisofslopeanalysismethod,theextractedspeciesofTi(Ⅳ)appearstobe[TiO(H_2A_2)_2]_(org),whereH_2A_2referstoHDEHP.Further,thekineticstudiesoftheextractionprocessofTi(Ⅳ)andothermetalionimpuritieswerecarriedoutbyaLewiscellwithaconstantinterfacialareaof16.7cm~2.AnalysisoftheexperimentalresultssuggeststhatTiO~(2+)extractionratebyHDEHPisthefirstwithrespecttohydrogenionconcentrationandHDEHPconcentration.Theresultsareinterpretedbyareactionmechanismwheretheextractionprocessiscontrolledbyadiffusionprocessattheinterfaceratherthaninthebulkphase.

简介：微观结构和Ti-63烤饼的机械性质在不同热处理模式下面被调查。平降号码1，与一个同样伪造的双性人一起形式的结构，β为1h在930°C被退火。它的结构与连续谷物边界α阶段和长薄片状的α阶段被改变到Widmanstatten结构。平降显示出力量，韧性和破裂坚韧的好联合。平降号码2，与一个同样伪造的双性人一起形式的结构，在为1h在930°C退火以后为8h在540°C被变老。除罚款以外，第二等的α猛抛，它显示出类似的微观结构到平降号码的1。罚款猛抛当减少韧性和破裂坚韧时，能提高平降的力量。与同样伪造的篮子编织结构，平降号码3为1h在750°C被退火。它的结构是将近未改变的，它完成了更好的韧性但是稍微更低的破裂坚韧比平降号码1。

简介：Al-5Ti-0.5C-8Sr(集体部分，%)主人合金用一个melt反应方法被准备。微观结构和主人合金的合成过程被光显微镜学，X光检查衍射，扫描电子显微镜学和X光检查调查精力散的光谱。结果证明主人合金由组成一(艾尔)，TiAl3，TiC，Al4Sr和Al-Ti-Sr分阶段执行。主人合金的合成机制如下：TiAl3通过在K2TiF6和艾尔之间的反应被形成在基础材料的部分融化层融化在850个C粒子与同类地分布式的加强在超声的行动和一张契约下面被变成液体filler在团结以后被获得。体积部分原文如此，在契约的粒子能被改变以铜锌金焊接的温度改变。最大值原文如此，契约材料的粒子体积部分在brazi到达了37%？

简介：ThesubmicronpowdermixturesofTiC-TiN-WC-Mo-C-Nisinteredat1400℃orbelowinvacuumwerestudiedbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM)andtransmissionelectronmicroscopy(TEM)analyses.TheresultsshowedthatMo2Cformedat800℃orbelow.BothWCandMo2Cdisappearedat1200℃,andTiNdisappearedat1250℃.Inaddition,thevariationsoflatticeconstantsofthetitaniumcarbonitrideandnickelbinderphasewithsinteringtemperaturewereexperimentallyobtained,andthereasonwasanalyzed.

简介：以二不同纯净的Zr开始，基于Ti的体积有Ti40Zr25Cu12Ni320被准备。在形成合金的能力(GFA)的玻璃上的0.2at.%，0.4at.%，0.5at.%，0.6at.%，和1at.%的层次的钇的增加的效果借助于金属组织学，X光检查衍射，和微分扫描热量测定被调查了。试验性的数据显示高杂质内容戏剧性地减少形成能力的玻璃。有0.5at.%Y的Microalloying在压制水晶的阶段形成并且在低纯净的合金减轻氧的有害效果是有效的。相反在包含高纯净的元素的合金，有效的钇增加是不到0.4at.%。结果显示最佳掺杂物的有益的效果主要由于清除是经由无害的阶段的形成的氧杂质。

简介：Precipitationresponseofarecentlydevelopedb-typeTi–25Nb–2Mo–4Snalloy(wt%)duringagingwasinvestigatedindetail.Experimentalresultsindicatethatthemetastableωorequilibriumαphasecanformalternativelyevenunderthesameagingcondition,dependingontheconditionpriortotheaging,i.e.,solutiontreatmentorseverecoldrolling.Thisprovides,forthefirsttime,thedirectevidenceforthecompetitionbetweenωandαinagedβ-typeTialloys.Thispeculiaragingresponseisfoundtobecloselyrelatedtohigh-densitydislocationsandgrainboundarieswhichsuppresstheformationofωbutfavortheprecipitationoffineaphase.

简介：ArapidlysolidifiedAl-2.5Ti-2.5Fe-2.5Cr(massfractionin%)alloywaspreparedbymeltspinning.Asquenchedandas-annealedmicrostructureswerestudiedbyX-raydiffractometry(XRD),transmissionelectronmicroscopy(TEM),high-resolutiontransmissionelectronmicroscopy(HREM)andenergydispersivespectrum(EDS)analysis.Themicrohardnessofthealloyatdifferentannealingtemperatureswasmeasured.TheresultsobtainedindicatethatthemicrohardnessoftherapidlysolidifiedAl-2.5Ti-2.5Fe-2.5Cralloydoesnotvarywithdifferentannealingtemperatures.Theas-quenchedmicrostructureofthealloyincludestwokindsofdispersedprimaryphases:Al3TiandAl13(Cr,Fe)2.Afterannealingat400℃for10h,thestablephaseAl13Fe4appearsinthemicrostructure.

简介：ThehydrogenstoragepropertiesofTi1.2Fe+xCa(x=1%,3%and5%inmassfraction)alloyswasinvestigated.ResultsshowthatthemodifiedalloyscanbeactivatedwithoutanythermaltreatmentatroomtemperatureduetotheadditionofCaandexcessTiinthealloys.HydrogenstoragepropertiesofthesemodifiedalloysvarywithCaamountandreactiontemperature.Inaddition,theinfluencemechanismoftheadditionofCaandexcessiveTiontheactivationbehaviorandhydrogenstoragecapacityofthealloyswasdiscussed.

简介：MicrostructureandtextureofTi-Nb-Sibasedalloys,preparedbywaterquenchingfromβ-phasefield,coldrollingandrecrystallizationheattreatmentfollowedbywaterquenching,wereinvestigatedintermsofopticalmicrostructureandanalysisofX-raypolefigureresult.Inas-quenchedsample,relativelyrandomdistributionofpolefigurewasdetectedwithoutshowingaspecifictexturecomponent.Inas-coldrolledsample,however,itisfoundwell-developedseveraltexturecomponentsconsistingofrotatedcube,α-fiberandγ-fibertexturecomponentswhicharefrequentlyobservedinbcc-structuredmetalsandalloyswerefound.Therefore,texturecomponentsdevelopedinthepresentalloysarecloselyrelatedtothedeformationofβ-phaseeventhoughsmallamountofα″phaseco-existinthemicrostructure.Inrecrystallizedsample,α-fibertexturecomponentisweaklydetectedwhiletheothertexturecomponents,rotatedcubeandγ-fibercomponents,appearstoberelativelyunchanged.Noadditionaltexturecomponentsweredetectedbesidesthosetexturecomponentsobservedinthecoldrolledsamples.

简介：TheeffectsofheattreatmentsonthephasetransformationbehaviorofTi49Ni49.5Fe1V0.5andTi48Ni48.5Fe1V2.5alloyswereinvestigated.TheresultsindicatethatthealloyssubjectedtodifferentheattreatmentshaveB2structureatroomtemperature.AllthespecimensexhibitatwostageB2→R→B190martensitictransformationoncooling,butaB190→B2one-stagereversemartensitictransformationonheatingexceptagedA1alloy,whichundergoesanabnormaltwo-stagetransformationuponheating.ThephasetransformationtemperaturesareaffectedbyheattreatmentsandVcontent,whichcanbeattributedtothevariationofthesecond-phaseparticlescontentinthematrix.

简介：陶器的涂层被微等离子区氧化(军邮局)在NaAlO2答案在Ti-6A14V合金上准备。涂的样品和底层的盐水花测试在一台盐水花测试机器被执行。涂层的阶段作文和表面形态学被XRD和SEM调查。严重腐蚀发生在底层表面上，当涂的样品上没有明显的腐蚀现象时。涂层由Al2TiO5和小-Al2O3和金红石TiO2组成，并且盐水花测试没改变涂层的作文。涂层的重量损失率与因为涂层的密度和厚度的增加，增加军邮局时间减少了。涂层的表面形态学被盐水花腐蚀测试影响。在涂的样品之中，为2h作好准备的涂层在盐水花测试下面有最好的腐蚀抵抗。

简介：Ti44Zr32Ni22Cu2和Ti41Zr29Ni28Cu2合金被融化旋转方法准备。阶段结构被X光检查衍射分析，并且融化旋转合金的电气化学的表演被调查。结果显示Ti44Zr32Ni22Cu2合金由icosahedralquasicrystals和非结晶的阶段组成，并且Ti41Zr29Ni28Cu2合金包括了icosahedralquasicrystals，非结晶，并且洗阶段。最大的分泌物能力分别地为Ti41Zr29Ni28Cu2合金是为Ti44Zr32Ni22Cu2合金和181mAh/g的141mAh/g。Ti41Zr29Ni28Cu2合金也显示出更好高率的dischargeability和骑车的稳定性。更好电气化学的性质应该被归功于到Ni的高内容，它对电气化学的运动性质有益并且在Ti41Zr29Ni28Cu2合金使合金更抵抗到氧化，以及到洗阶段，它能作为电镀物品催化剂和微水流的收集者工作。

简介：

简介：微观结构和Al-Cu-Mg-Ag合金的机械性质上的Ce和Ti增加的效果被学习了。Ce或Ti能减少，这被显示出Al-Cu-Mg-Ag合金的当演员组谷物尺寸，为Ω的成核比率作为异构的成核中心分阶段执行，在老化期间禁止Ω阶段的生长，并且因此增加Ω的间距分阶段执行的体积部分和减少的增加。这些微观结构增加收益力量和张力的力量。然而，如果Ce和Ti被加到合金，他们形成(Ce，Ti)包含的混合物和增加谷物在扔期间缩放，但是没在老化期间在成核和Ω阶段的生长上有效果。包含Ce和Ti的合金与包含Ce或Ti的合金相比有相对更低的Vicks坚硬和力量。

简介：镁合金在工业有大量应用；然而，他们的腐蚀电阻，穿电阻，和坚硬是相当差的，它限制他们的应用。Ti离子被金属蒸汽真空弧(MEVVA)植入进AZ31镁合金表面implanter。这金属弧离子来源有一根宽广横梁和高当前的能力。Theimplantation精力在45keV被修理，剂量在9x10~(17)cm~(-2)。通过离子培植，有在厚度的约900nm的Ti离子培植层直接在AZ31镁合金，它的表面性质极大地由改善了的表面上被形成。化学药品一些声明离子培植层的典型元素借助于X-rayphotoelectron光谱学(XPS)被分析，当离子培植层和阶段结构的生气部分形态学借助于扫描电子显微镜学(SEM)和X-raydiffraction(XRD)被观察时。Ti离子的腐蚀电阻的性质植入层被CS300P电气化学腐蚀工作站在3.5%NaCl答案学习。结果证明腐蚀电阻的性质显著地被提高，当腐蚀速度显然被减慢时。

简介：热变丑行为借助于扫描电子显微镜学(SEM)和单轴的热紧张被学习。流动应力上的变丑温度和紧张率的效果被评估，并且变丑机制被分析。压力紧张Ti-6Al-4V(TC4)合金表和TC4合金酒吧弄弯在的结果表演提高了温度有不同形式和规则。TC4的流动应力被紧张率和变丑温度控制。流动压力随高温度的增加减少。变丑机制在高温度区域和谷物边界以内展出动态恢复和再结晶特征在低温度滑动行为。