简介：

简介：Puretungsten（PW）andW-1wt%La2O3（WL10）werepreparedbypowdermetallurgicalroutefollowedbytheswaging+rollingprocess.Thelogarithmicstrainsare0,0.37,0.58,and0.98forWL10and0,0.58forPW.Heattreatmentswereperformedattemperaturesvariedfrom1,573to2,173Ktodeterminetherecrystallizationtemperature.Recrystallizationtemperaturesare1,973and2,173KforWL1（logarithmicstrainof0.37）andWL3（logarithmicstrainof0.98）,respectively.ButinthecaseofWL2（logarithmicstrainof0.58）,fullrecrystallizationisnotachievedattemperatureofabove2,173K.Furthermore,therecrystallizationtemperatureofPWwithlogarithmicstrainof0.58isatleast300KlowerthanthatoftheequivalentWL10sample.Moreover,theincreaseofrecrystallizationtemperatureinhibitsthestrengthdegradationofWL2:sampleslose4%and22%strengthwhenannealedat1,573and1,973Kcomparedwithroomtemperature（RT）sample.Finally,thetextureevolutionfortheswaged+rolledWL10issignificantlyrelatedtothedeformationdegree:thedominatedorientationis<001>forWL2while<110>forWL3.

简介：Electropulsing-inducedrecrystallizationanditseffectonmechanicalpropertiesoforientedsiliconsteelstrips(Fe-3.0%Si)werestudiedbyopticalmicroscopy,scanningelectronmicroscopyandelectronback-scatterdiffraction.Theresultsindicatedthatelectropulsingacceleratedrecrystallization,anddecreasedthetemperatureofrecrystallization.Electropulsingfavorsrefinementofthegrainstructureofthealloy.Effectsofelectropulsingonstrengthandelongationofthealloywerediscussedfromthepointviewofdislocationdynamics,microstructuralchanges,andelectropulsingkinetics.

简介：成核参数的精确性在动态再结晶(DRX)期间是在微结构进化的模拟的一个关键因素。在热变丑条件下面基于流动压力曲线，一条新途径被建议在DRX期间识别成核参数。在这条途径，一个细胞的自动机(CA)模型被用于份量上在热变丑期间模仿微结构进化和流动应力；并且适应反应表面方法(ARSM)作为优化模型被使用提供输入参数给CA模型并且评估后者的产量。由拿一没有氧高传导性(OFHC)铜作为一个例子，在模拟结果之间的好协议和试验性的观察表明建议方法的可获得性。

简介：Thedynamicandstaticrecrystallizationbehaviorsoftwinrollcastlowcarbonsteelstripwereinvestigatedwithanattempttoprovideguidingdeformationparametersfortheonlinehotrolling.Inordertoinvestigatedynamicrecrystallizationbehavior,ascaststripwasreheatedandsoakedwithaustenitegrainsizesimilartothewidthleveloftheascastcolumnarstructure.Tensiletestwasusedandthedeformationtemperatureisintherangeof900℃to1100℃andstrainratesare0.01s-1,0.1s-1,1s-1.Theactivationenergyandstressexponentweredeterminedas306kJ/moland4.69respectively.Theratioofcriticalstraintothepeakstrainis0.65,andthatofcriticalstresstothepeakstressis0.92.ThedependenceofthepeakstrainontheinitialgrainsizeandZener-HollomonparametersZisεp=9.1×10-4×D00.48Z0.13.Thekineticsofthedynamicrecrystallizationandrecrystallizedgrainsizewaspredictedusingmodelspublished.Theascastcoarseausteniteweredramaticallyrefinedaftercompletedynamicrecrystallization.Forstaticrecrystallization,thetensiletestwascarriedoutonGleeble-3500thermo-mechanicalsimulator.Thedeformationtemperatureisintherangeof800℃to1200℃withstrainrate0.01s-1to1s-1.Theprestrainisfixedat0.04to0.12andtheinter-hitdelaytimevariesfrom1sto3000s.TheactivationenergyandAvramiexponentofstaticrecrystallizationweredeterminedas241kJ/moland0.54respectively.Akineticsmodelwasproposedtodescribethestaticrecrystallizationkinetics.Thepredictedresultswereingoodagreementwiththeexperimentalresults.

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

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简介：低碳Nb-Timicroalloyed钢受到热扭转在温度范围上测试8501100?楷桴吗？

简介：Recrystallizationtextureofsteelplateisaffectedbysubstitutionsolidsolutionandinterstitialsolidsolution.Thisarticlefinishedtexturetestandstampingtestaboutlowcarbonaluminiumkilledsteel,IFsteel,phosphorusstrengthensteel,Si-Mn-Pstrengthensteel.Itcanbefoundthatallkindsofsteelhassimilarintensity{111}textureinpermanentφ=45°aboutlevel10.Interstitialsolidsolutionsteelhad{101}textureandsubstitutionsolidsolutionsteelhad{112}texture.Basedonrecysstallizationprincipleandstampingtest,theeffectofsolutiononrecrystallizationtextureisdiscussed.Itpointoutthatinterstitialsolidsolutionimpediment{111}textureformingandcausedto{101}textureremainedinsteel.Thephenomenonstrengthenanisotropicpropertyandreductionstampingproperty.Similartosubstitutionsolidsolution,itwouldimpediment{111}texturetoo,but{101}texturechangedto{112}texture.

简介：Inthepresentwork,themicrostructure,texture,andmechanicalpropertiesofacold-rolledTi-IFsteel,afterannealingatdifferentheatingrates,havebeeninvestigated.Theresultsrevealthatthemeangrainsizeisgraduallyrefinedfrom19.2to16.3μmastheheatingrateincreasesfrom4to50℃/s,butrefinedonlyslightlyatheatingratesofover50℃/s.Therecrystallizationmicrostructurehasastrongtexture,whichisaresultofthesharpeningofthefavorable{111}//ND(normaldirection)texturecomponentsorγ-fiber.Withincreasingheatingrates,thepeakvalueoff(g)ofγ-fiberdecreasesfrom17to9.Theyieldandtensilestrengthsincreasegraduallyastheheatingrateincreasesfrom4to50℃/s,butremainalmostunchangedatheatingratesofmorethan50℃/s.Thetotalelongationanduniformelongationincreasegraduallyastheheatingrateincreasesfrom4to100℃/s,butdecreasesslowlyforheatingrateshigherthan100℃/s.Astheheatingrateincreasesfrom4to100℃/s,theplasticstrainratioofthesteeldecreasesfrom2.8to2.2;however,itincreasesto2.9forheatingratesabove100℃/s.Thestrainhardeningexponentremainsunchangedat0.27inallannealingcycles.

简介：在退火期间形成的再结晶谷物的取向分发，以及他们到在冷卷的FeCo合金的变丑矩阵的错误取向关系被调查了。大多数再结晶原子核与到变丑矩阵的角度很高通常是的相当随机的取向，和他们的错误取向在边界区域附近被定位，这被发现。然而，一些原子核也在变丑谷物，他们有很类似的取向到内被观察。因此在原子核和变丑矩阵之间的错误取向角度通常是很低的。取向和原子核的错误取向分布在能导致一块很弱的再结晶质地的再结晶过程上有很强烈的影响。相应机制被讨论。

简介：Reerystallizafionofcold-roUeddiscontinuousprecipitationmicrostructurewhichhasfinelaminarstructureinanAl-40%7m(atomfraction)binaryalloyisinvestigatedbyopticalmicroscopy,SEMandTEM.Itisfoundthattherearetwokindsofrecrystallizationmechanisms:continuouscoarsening(CC)anddiscontinuouscoarsening(DC).Thelattercanbedividedintocoarseningmainlydrivenbystoreddeformationenergyatcolonyboundariesandslipbandsandtheonemainlydrivenbyboundaryenergyintheareawithlittledeformation.ItisshownthattheadditionofCucanretardthenucleationofcoarseningcellsandtheirgrowth.X-RaydiffractionanalysisindicatedthemetastablephaseCuZn4transformedintoequilibriumphaseAl4Cu3Znduringtheheatingprocess.

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简介：Abstract:TheeffectofTiandNbontherecrystallizationandtherecrystallizedgrainsizeofthehot-rolledplatesandcold-rolledsheetsofultralowcarbonandnitrogen(ULCN)Cr18ferriticstainlesssteel(FSS)isinvestigated.Theresultsshowthattherecrystallizationofhot-rolledplatesandcold-rolledsheetswith0.29%Nbisdelayed,andtherecrystallizedgrainsaresignificantlyrefined.

简介：ItisfundamentallyimportanttounderstandtheinfluenceofstrainonthedensityofdeformationtwinsinTWIPsteelbecausetwinningisitsdominantdeformationmechanism.ThedeformationbehaviorofaFe-30Mn-4Si-3Al-0.097CsteelhasbeeninvestigatedbyX-raydiffraction(XRD),electronbackscatterdiffraction(EBSD)andtransmissionelectronmicroscopy(TEM)techniques.Samplewithanaveragegrainsizeof10μmwasdeformedincold-rollingwithareductionof10%,20%,30%,40%,50%,60%and70%,respectively.Themechanicalpropertiesofthecold-rolledsampleswerefurtherinvestigatedbytensiletests.Theyieldstrength(σy)andultimate-tensile-strength(σUTS)oftheas-preparedsampleis480MPaand850MPa,respectively.However,undercoldrollingdeformation,thetensilestrengthobviouslyincreaseswithanincreaseinrollingreduction.Thesamplewitharollingreductionof10%exhibitsσyof610MPaandσUTSof-1000MPa.Theyieldstrengthandtensilestrengtharefurtherenhancedupto1320MPaand1378MPaforthespecimenwitharollingreductionof70%,regardlessofthepoorductilityof6.7%.ThedeformationmicrostructureswerestudiedbyEBSDandTEMobservations.Itisfoundthat,withincreasingrollingreduction,theaveragedistancebetweendeformationtwinsdecreasesgraduallywhilethedensityofdeformationtwins(thelengthoftwinboundaryinunitarea)exhibitamaximumvalueat40%cold-rolling+tension.Carefullystatisticsanalysisrevealsgrainorientationiscloselyrelatedtothedeformationtwinsandtheunderlyingmechanismgoverningthetwinningisdiscussed.

简介：微分扫描热量测定(DSC)广泛地被使用了学习结晶化并且材料融化。为聚合薄片状的晶体，然而，融化的thermogram通常在加热过程期间展出一座宽广吸热的山峰或甚至多重的温血动物，它可以经由再结晶过程源于metastability的变化。有时，再结晶exotherm不能由于它与融化的温血动物重叠被观察。在这个工作，我们采用了加热过程由测量metastability的连续加热和温度成立阶段组成的步等温地poly结晶(丁烯succinate)(PBS)晶体。与我们能获得的这条途径，晶体的部分在范围和份量上检测的不同温度融化了融化再结晶行为。融化再结晶行为取决于聚合物链结构和结晶化温度。例如，当PBSoligomer和高分子的重量PBShomopolymer表明显著融化再结晶现象时，PBS块共聚物几乎不显示出再结晶行为。当等温地在提高的温度使结晶的那些不展出看得见的再结晶行为时，等温地在低温度范围使结晶的高分子的重量PBS显示出多重融化再结晶。而且，融化的温血动物经由融化的动力学方程被适合。原来的等温地使结晶的lamellae从融化在最高的温度范围的重新使结晶的薄片状的晶体表明相当不同的融化的动力学，它被归因于稳定的不同学位。最后，融化再结晶的机制简短被讨论。我们建议当更厚的lamellae的薄片状的晶体和再结晶有的preformed融化类似的免费精力障碍时，那明显的融化再结晶现象被观察。

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。

简介：AlN降水和再结晶质地上的一个电场的效果被调查。滚动寒冷的08Al杀死了钢表根据二拍子的圆舞过程在550degC被退火，在各种各样的维持的时间，有或没有使用一个电场。电场支持第二个阶段(AINparticles)的降水，这被发现，加强7纤维并且削弱在recrystallizedspecimens的cc纤维质地部件。对由电场的7纤维质地的加强的可能的解释是第二个阶段艾因河粒子在损坏不同地面向的谷物的情况下支持7纤维的生长。