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

简介：NiTialloyisproducedbymechanicalalloying(MA).Itbecomesamorphousaftermillingforenoughtime,suchas100hinthispaper.DSCmeasurementshowsthatthecrystallizationtemperatureis676Kfortheamorphouspowder.Activationenergyofcrystallizationis199.98kJ/molforMApowder,whichislowerthanthatofamorphouspreparedbymagnetronsputtering.Avramiparameterofcrystallizationis1.07.

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简介：Thepurposeofthisresearchistoquantifytheeffectsofcompositionalandprocessingparametersonthemicrostructureandpropertiesofdualphasesteelproduceddirectlybyhotrollingandrapidcooling.Steelswiththebasecompositionof0.1%C,1.4%Si,and1.0%Mnwithadditionsof0.5%Crtoinfluencehardenability,0.04%Nbtoretardrecrystallizationinthelatterstagesofrolling,or0.02%Titoinhibitgraingrowthduringandafterreheatingwereinvestigated.Investigationwasmadetopredictmicrostructureevolutionandtocorrelatemicrostructurewithprocessingparameters.Theeffectsoftheimportantmicrostructureparameterssuchasferritegrainsize,martensitevolumefraction(VM)andmorphology(polygonalorfibrous)onthetensileandimpactpropertiesarediscussed.Multiplelinearregressionanalysisoftheultimatetensilestrengthhasshownthat,increasingVMandmartensitemicrohardnessandgrainrefinementofferritearethemajorcontributionstoincreasethestrengthofthesteel.Itwasfoundthatthedual-phasesteelproducedbycontrolledrollingprocess,withamicrostructurewhichconsistedoffinegrainedferrite(4μm)and35%～40%fibrousmartensite,presentedoptimumtensileandimpactpropertiesbecauseofenhancedresistancetocrackpropagation.

简介：Theinfluenceofthevolumefractionoftemperedmartensiteonmagnetomechanicaldampingoftheferriticmatrixindual-phasealloyswasstudied.Theexperimentalresultsshowedthat（1）dual-phasedampingalloyisofgoodcombinationofstrengthandtoughness:（2）gooddampingca-pacity(Q-1≥5.0×10-3)canbeobtainedindual-phasealloysonlywhenthevolumefractionoftemperedmartensitewascontrolledproperly.Theeffectofmartensiteonmagnetomechanicaldamp-ingoftheferriticmatrixwasanalysed.Thedampingcapacityofdual-phasealloyswasrelatedtothevolumefractionVmoftemperedmartensitebyQ^{-1=Q-1（1-Vm/1+BVm）atsmallvibrationstrainamplitudesεA≤5.0×10-6.}

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简介：Byasimplephasefieldmodel,aseriesofnumericalsimulationsofsolidificationmicrostructurewasperformedtoshowarichvarietyofdendriticpatterns.Atthesametime,therelationbetweenthemorphologyofgraingrowthandsomeparametersincludingthestrengthofanisotropy,dimensionlesslatentheatandthesizeofinitialsolidzonewasstudied.Itisforthefirsttimethatpatternsofgraingrowthwereassociatedwiththesizeofinitialsolidzone,whichisaninterestingissue.Thepossiblereasonforthismaybethatvariationinthesizeofinitialsolidzonemaybringaboutfluctuationoftheinterfaceenergy,makingtheinterfaceunstable.

简介：为stoichiometric作文的nanocrystallineNd-Fe-B磁铁的demangetization曲线被使用微磁力的有限元素技术计算。曲线，特别iHc随N.The很小的iHc的增加变得更小从一系列沿着不同的地方向的曲线为N=∞接近那。iHc随L的增加增加，并且是什么的靠近的cr一些比小试验性的价值应该是。

简介：HighperformanceliquidchromatographywithaC18reverse-phasecolumnwasusedtoseparatethefivecomponentsincoughsyrup,includingacetaminophen,p-aminophenol,caffeine,chlorphenaminemaleateandguaifenesin.Themobilephaseconsistsof15wi%acetonitrile,0.004mol/Lsodiumheptylsulfonate,0.03mole/Lpotassiumdi-hydrogenphosphateandtriethylamine(volumeratio13:40:44:3),thepHofwhichisadjustedto3.0byphosphoricacid.Thecontentsofthefivecomponentsareanalyzedonanultravioletspectropho-tometerat254nm,withaflowrateof0.4mL/min.Theresultsshowthatthecalibrationcurvesarelinearinacertainrange.Theaveragerecoveryoffivecomponentsisbetween96.31%and102.3%.

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简介：Microstructureandsubsequentphasetransformationsonheatingofthemelt-spunNd85Al15alloyhavebeenstudiedbyX-raydiffraction,transmissionelectronmicroscopyanddifferentialscanningcalorimetry.Themelt-spunNd85Al15alloyshowstwo-stagetransformationprocessesasfollows:amorphous+72nmsupersaturatedbcc-Nd(Al)solidsolution→7nmomega-likephase→AlNd3+hexagonalNd.Theactivationenergiesforthefirstandsecondtransformationwerefoundtobe100kJ/moland188kJ/mol,respectively.Theformationmechanismofnanoscaleomega-likephaseisdiscussed.

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简介：有双阶段的结构(alpha+beta)的alpha钛和它的合金在大约10~的紧张率下面动态地被使变形4s~(-1)。形成和微结构进化局部性砍乐队们被扫描电子显微镜学(SEM)和传播电子显微镜学(TEM)描绘。结果表明紧张和紧张率应该同时被看作机械条件为砍乐队形成，和twinning是变丑的一个重要模式。试验性并且在乐队以内的材料经历了的计算表演超高频率的紧张率(9X10~5s~(-1))变丑，它是平均紧张率的二大小要求了为砍乐队形成；在乐队的脱臼能被压缩并且发展成房间结构；到在乐队以内的alpha_2的阶段转变fromalpha被观察，并且转变产品(alpha_2)与他们的父母一起有某个结晶的取向关系；有在在乐队以内观察的直径的10亩m的一种平均尺寸的equiaxed谷物被建议是再结晶的结果。

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简介：TheRamanspectraof3%(molefraction)Y2O3-ZrO2(3Y)areobtainedatdifferenttemperaturefrom77Kto853K.Theresultsshowthat260cm-1Egand460cm-1Egmodesonthespectrashifttowardlowerwavenumberwiththeincreaseoftemperature;meanwhile,thecontinuityoftheHalfWidthatHalfMaximum(HWHM)andwavenumber(frequency)ofRamanbandsarebrokenandt-phaseonlypartiallytransformstom-phaseat523K.Basedontheexperimentalresults,thispaperdiscussesthet-phaselatticevibrationof3YandpresentstheimagesofvibrationdisplacementofsixRaman-activemodesfort-phaseofZrO2.TheanalysisindicatesthattherearediversitiesexistinginthedisplacementoftheatomicvibrationofRaman-activemodesbecauseoftheirdifferentsymmetriesatvarioustemperature,whichleadstothedifferentchangetendenciesofRamanbands.Furthermore,theabruptchangesofsomeRaman-activemodesindicatingtheatomicdisplacementareassumedtobethecondensationsofphononmodesinthet→mphasetransition.

简介：SiCp/AI金属矩阵的表面上的紧缩的氧化物合成(SiCp/AIMMC)极大地取决于关节的性质。镶嵌的劈啪作响的目标被使用由血浆侵蚀在SiCp/AIMMC的结合的表面上完全蚀刻氧化物。在厚度的5妈妈的Cu/Ni/Cu电影被磁控管劈啪作响方法在一样的真空房间在干净结合表面上准备，它在结合的短暂液相(TLP)作为夹层被扮演过程。与单个Cu陪衬和Ni陪衬夹层的一样的厚度相比，200MPa的shear力量在TLP结合期间用Cu/Ni/Cu电影夹层被获得，它是89.7%碱金属的。另外，结合的区域的

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