简介：Itiswellknownthatvanadiumalloywillfacetostrongneutronirradiationandhydrogenenvironmentsasastructuralmaterialinafusionreactor.Someresearcheshavereportedthatvanadiumalloytookstronglyhardeningafteranexposuretohydrogenenvironmentandirradiationbyneutronatatemperaturelowerthan400℃.Theductilityofthealloywaslostlargely,evenentirelybrittlefractureoccurredsometimesintensionloadingofthealloy.Therefore,it'stogettheknowledgeofthehardeningmechanismandthefracturemechanicalforthepurposetoimprovetheperformancesofthealloyunderthecircumstances.

简介：张力爬精细的Fe-Mn二进制合金containing0.42-1.21wt.%Mn的行为从房间温度在温度范围被调查了到475Kunder10-50MPa。张力的测试以紧张率在uniaxail负担下面以经常的小标题速度被执行10(-4)s(-1)。压力代表和激活精力决心澄清变丑机制。稳定的状态的获得的变化爬关于为Fe-Mn二进制合金的应用压力的率在大约20MPa展出二不同政体，显示一个可能的变化在爬机制。平均压力代表是约2.2，它是在合金滑动的谷物boundry的一个特征。为塑料流动的激活精力从135～92kJ/mol变化，取决于Mn内容。

简介：Vanadiumalloyisoneofthemostimportantcandidatestructuralmaterialsforafusionreactor.Itsmainadvantagesoverothercandidatesareitslowactivityfeatureandfeasiblepropertiesathightemperature.However,vanadiumiseasilyoxidizedathightemperaturetoformanon-protectivesurfacefilmofV2O5.Oxygenconcentrationwouldthusgethighandthepropertiesgetworseinnotonlythelossoftheductilitybutalsotheenhancedhydrogenembrittlementbytheoxidation.

简介：客栈和In0.46Ga0.54N电影在蓝宝石上被种与一轧了缓冲区bymetalorganic化学药品蒸汽免职(MOCVD)。两高分辨率X光衍射和高分辨率传播电子显微镜学结果表明这些电影有单个水晶的六角形的结构。薄客栈电影有475厘米(2)的高活动性V(-1)s(-1)和In0.46Ga0.54N的是163厘米(2)V(-1)s(-1)。InNfilm的房间温度光致发光测量在0.72eV显示出一座山峰，证实一部高质量的客栈电影为到完整的光谱房间的应用被制作。

简介：TheatomicandelectronicstructurestogetherwiththeopticalpropertiesofTiAuinthelow-temperatureB19andB11phasesarecalculatedbyusingfirstprincipleslocaldensityfunctionalapproaches.OurresultsshowthattheB11structureismorestablethanB19fortheTiAualloyinorderedequiatomiccomposition(Ti:Au=50:50).Atlowtemperatures,theB11structureshouldexistasabinaryalloyfromtheenergeticconsideration.Theaccurateatomicpositionsintheunitcellhavebeengivenbyfullyforcerelaxedcalculations.ThecalculatedopticalconductivitiesofB19andB11phasesshowadrasticchangeintheregionof1.5to3.5eV.

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简介：Vanadiumalloys,especiallythatofV4Cr4Ti,aresupposedasthepromisingcandidatestructuralmaterialforfusionapplicationsfortheirgoodthermalproperties,hightemperaturestrengthandtheinherentlowactivationcharacteristics.However,inrecent

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简介：ThisworkstudiesTedopingeffectsonthedirectbandgapphotoluminescence（PL）ofindirectGaxIn1-xPalloys（0.72≤x≤0.74）.Thetemperature-dependentPLshowsthattheenergydifferencebetweendirectΓvalleyandindirectXvalleysisreducedduetothebandgapnarrowing（BGN）effect,andthedirectbandtransitiongraduallydominatesthePLspectraastemperatureincreases.CarrierthermalizationhasbeenobservedforTe-dopedGaxIn1-xPsamples,asintegratedPLintensityincreaseswithincreasingtemperaturefrom175to300K.Theactivationenergyforcarrierthermalizationisreducedasdopingconcentrationincreases.BothBGNeffectandcarrierthermalizationcontributetothecarrierinjectionintotheΓvalley.Asaresult,thedirectbandtransitionisenhancedintheTe-dopedindirectGaxIn1-xPalloys.Therefore,thePLintensityoftheGa0.74In0.26Psamplewithactivedopingconcentrationof9×1017cm-3isincreasedbyfivetimescomparedwiththatofanominallyundopedsample.ItisalsofoundthatthePLintensityisdegradedsignificantlywhenthedopingconcentrationisincreasedto5×1018cm-3.Fromcross-sectiontransmissionelectronmicroscopy,nolargedopantclustersorotherextendeddefectswerefoundcontributingtothisdegradation.

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简介：在不同温度的非结晶的CuHf合金的结构的因素由使用高温度X光衍射计的redetermined。theshort范围顺序结构而且中等范围的顺序结构在非结晶的CuHfalloys存在，这被发现不仅。合金融化的CuHf的动态粘性被扭力的摆动粘度计测量。脆弱过热CuHf合金融化基于粘性数据被计算。形成CuHf的能力的玻璃是的试验性的结果表演仔细与脆弱有关他们的超级加热融化。在中等范围顺序结构和脆弱之间的关系过热融化也在非结晶的CuHfalloys被建立了。与supercooled液体的脆弱相对照，过热的液体的脆弱答应一条更好的途径到反映形成液体的玻璃的动力学。

简介：ThispaperinvestigatesthesolidificationbehaviouroftheAg—Cueutecticalloymeltundercooledupto100K.ItisrevealedthatlamellareutecticsgrowinadendriticformintheAg-Cueutecticmeltwithundercoolingequaltoorgreaterthan76K.Asundercoolingincreases,theremeltedfractionoftheprimaryeutecticsduringrecalescencerises.Thesevereremeltingandthesubsequentripeningoftheprimaryeutecticdendritesleadtotheformationofanomalouseutectics.

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简介：用第一原则的乐队结构，方法和特殊quasirandom结构(平方)来临，我们系统地计算了弯系数和SnxZn1xTe合金的自然乐队偏移量的合金。我们证明鞠躬的系数和这些合金的乐队差距是易感知地作文依赖者。由于完整的重叠和Sn最外面的p轨道和Zns的delocalization转的波浪功能，在这些状态之间联合是很强壮的，导致有Sn集中x的增加的传导乐队边的重要换至较低排挡，当原子价乐队边与二进制ZnTe的相比保持几乎未改变时，因此改进可能性为双极性做。

简介：第三的Ni-5%Cu-5%Sn和Ni-10%Cu-10%Sn合金的液体状态undercoolability和水晶生长动力学被玻璃fluxing方法调查。在这二合金，304K的试验性的最大的undercoolings(0.18TL)和286K(0.17TL)被完成，树枝状的生长速度分别地达到39.8和25.1m/s。从进equiaxed结构的粗糙的树突的形态学的转变发生并且谷物尺寸(Ni)当undercooling增加时，显著地分阶段执行减少。格子常数和microhardness与undercooling的改进显然增加。Cu和Sn溶质内容的丰富减少树枝状的生长速度，当时提高格子常数和microhardness(Ni)阶段。

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简介：Zr1-xTixCo(x=0,0.1,0.2,0.3)alloyswerepreparedbyarc-meltingmethodandtheeffectofTisubstitutiononhydrogenstoragepropertieswasstudiedsystematically.Hydrogendesorptionpressure-composition-temperature(PCT)measurementswerecarriedoutusingSievert’stypevolumetricapparatusforZrCo(at473K,573Kand673K)andZr1-xTixCoalloys(at673K),respectively.ProductsafterdehydrogenationwerecharacterizedbyX-raydiffraction(XRD).Inaddition,thekineticsofZr1-xTixCohydridewasinvestigatedat473Kand673K,respectively,underhydrogenpressureof5MPa.ResultsshowedthatTisubstitutionforZrdidnotchangethecrystalstructureofZrCophase.Withtheincreaseoftemperaturefrom473Kto673K,theextentofdisproportionationforZrCoalloyincreased.WithTicontentincreasingat673K,thedesorptionequilibriumpressureofZr1-xTixCo-H2systemselevatedandthedisproportionationreactionofZr1-xTixCoalloyswasinhibitedeffectively.TisubstitutiondecreasedthekineticsrateandtheeffectivehydrogenstoragecapacityofZr1-xTixCoalloysslightly.Generallyspeaking,itwasfoundthatZr0.8Ti0.2Coalloyhadbetteranti-disproportionationpropertywithlessdecreaseofeffectivehydrogenstoragecapacitywhichwasbeneficialtotritiumapplicationintheInternationalThermonuclearExperimentalReactor(ITER).