简介：JointlydevelopedbyGeneralResearchInstituteofNonferrousMetalsinBeijing,NortheastUni-versityofTechnology,ZhuzhouHardAlloyFactoryandZigong-HardAlloyFactory,fournewmarksofRE-bearinghardalloy,YG6R,YG8R,YT5RandYT15R,havereachedcommercialproductionrecently.ThealloysresultfromthetechniquewherebyasmallamountofREmetalsisadded.Asteel

简介：ＬａｓｅｒＴｒｅａｔｍｅｎｔｏｆＯｘｉｄｅＤｉｓｐｅｒｓｉｏｎＳｔｒｅｎｇｔｈｅｎｅｄＡｌｌｏｙｓＳｈａＷｅｉ（沙维）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｉｅｒｉａｌｓＳｃｉｃｎｃｅａｎｄＭｅｔａｌｌｕｒｇｙ，ＵｎｉｖｅｒｓｉｔｙｏｆＣａｍｂｒｉｄｇｅ，Ｕ...

简介：I.StatusofChineseREHydrogenStorageAlloys1.R&DofREHydrogenStorageAlloysinChinaAB5hydrogenstoragematerials,takingrareearthmischmetalsasrawmaterials,developedrapidlyinChinainrecentyears.Today,differentcountriesattachimportancetothedevelopmentandapplicationofthenewenvironmental

简介：Inordertoresearchsurfacecharacteristicsofliquidmetalwhichbasedonhydrodynamicstheoryandinteractionprinciplebetweenlaserwaveandsurfacetensionstationarywaveofliquidmetal,itisfinishedtoprovideanentirelytheoreticalequation,apparatusandtechniquesofthemeasuringthesurfacetensionforliquidmetalathightemperature.Thisapparatusisanautomaticmeasuringsystemforinformationcollectingandprocessing,inwhichacomputerisattachedtochargecoupleddevice,drivingcircuitsandA/Dconverter.ApplyingthenewapparatusthesurfacetensionvaluesofSn-Pbbasedbinaryandternaryalloysoldershavebeenobtainedonthebasisoftheabovework.TheexperimentalresultsindicatethatthesurfacetensionvaluesofliquidmetalSn-Pbbasedsoldersaredecreasedby37.3%and31.9%respectively.When1%ofBiorInisaddedinthesolders,theelementsBiandInhaveevidentsurfaceactivityinSn-Pbbasedsoldersandthewettabilityofthesoldersinincreasedwithincreasingsurfaceactivity.

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

简介：ＡＮｅｗＭｅｔｈｏｄｏｆＳｔｕｄｙｉｎｇＳｕｒｆａｃｅＡｃｔｉｖｉｔｙｆｏｒＬｉｑｕｉｄＡｌｏｙｓ①②ＹＡＮＧＹｏｎｇｚｈｅｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌｉｅｄｐｈｙｓｉｃｓ，ＮｏｒｔｈｗｅｓｔｅｒｎＰｏｌｙｔｅｃｈｎｉｃａｌＵｎｉｖｅｒｓｉ...

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：ＩｎｔｒｏｄｕｃｔｉｏｎＩＭＩ８２９ｔｉｔａｎｉｕｍａｌｏｙｉｓａｋｉｎｄｏｆｈｉｇｈｔｅｍｐｅｒａｔｕｒｅｎｅａｒαａｌｏｙ．Ｉｔｓｓｅｒｖｉｃｅｔｅｍｐｅｒａｔｕｒｅｉｓｕｐｔｏ５８０℃．ＩｔｈａｓｂｅｅｎｕｓｅｄｉｎＲＢ２１１５２５Ｅ４ｅｎ...

简介：Solidificationstructurevariationofsinglephasealloywithundercoolingpriortonucleationhasbeenwidelystudied.Theprogress,especiallyduringthelastdecade,isreviewedsoastogiveacomprehensiveknowledgeforit,inwhichtheemphasesarelaidonthestructureevolutionmechanismandthepotentialapplication.Lastly,thefutureinterestingsubjectsarepresented.

简介：DensityofmoltenNiandNi-Walloyswasmeasuredinthetemperaturerangeof1773～1873Kwithasessiledropmethod.ThedensityofmoltenNiandNi-Walloystrendstodecreasewithincreasingtemperature.ThedensityandmolarvolumeofthealloystrendtoincreasewithincreasingWconcentrationinthealloys.ThecalculationresultshowsanidealmixingofNi-Walloys.

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：1.IntroductionLightrareearthadditioncanremarkablyenhancetheservicelifeofFe-Cr-Alalloyforelectricalheatingelement,butitscontentinthealloymustbecontrolledbelowthelevelof0.1wt-%.Whenthecontentexceedsthat,theperformance

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

简介：MoleculardynamicssimulationwascarriedouttoinvestigatetheliquidandamorphousmicrostructuresofbinaryAgx-Rh(100-x)(x=25,50,75inatomfraction)alloys.SegregationfeatureofhomogeneousinteratomicbindingofAg-Rhliquidwasfoundandprobed,whichcanberetainedintoamorphoussolidsuponrapidcooling.Homogeneousbindingmayoccurwhenthedifferenceintheelementalatomicsizesislessthan10%.Theicosahedrainliquidbeforetheformationofamorphousstateexistinastablestateandthenetworkformedby1551-clustersinmoltenalloyswouldinhibitthecrystallizationanddiffusionofatoms.Ahigherdegreeof1551-clusterswillbefavorabletoformmetallicglasses.

简介：ThearealdistributionofsomeelementsintherareearthbearingspheroidalphasesinpurealuminiumandAl-MnalloyswasstudiedbySIMS(secondaryionmassspectrometry).Theresultsshowthatcerium,iron.siliconandhydrogenaresignificantlysegregatedinthephases.Thustheexistenceofhydrogen-richrareearthbearingeompoundsisconfirmed.Itindicatesthattherareearthshaveahydrogenfixationeffectinaluminiumandaluminiumalloys.

简介：X－raydiffraction(XRD)anddifferentialscanningcalorimetry(DSC)wereemployedtoinvestigatetheinfluenceofNicontentonthecrystallizationofamorphousZr70Cu30-xNix(atomfrationin%)alloys,ExperimentalresultsshowthatwiththeNicontentincreasingtheactivationenergiesforcrystallizationofamorphousZr70Cu30-xNixalloysincreasecorrespondingly,indicatingthatthethermalstabilityisgreatlyimproved.AlltheDSCtracesofamorphousZr70Cu30-xNixalloysexhibittwoexothermicpeaks,suggestingthatthecrystallizationprocessviaadouble-stageticles,whilethesecondonecorrespondstotheprecipitaionofnano-scaleZr2Niphaseandcrystallizationofresidualamporphousphase,ThemechanismonthecrystallizationofamorphousZr70Cu30-xNixalloyswasdiscussed.

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