简介：利用喷射沉积工艺制备Al-3．3Fe-10．7Si合金坯，经挤压制成试样。研究了合金组织、韧性及内耗行为，得出该合金在60-250℃温度范围产生的内耗峰，是由于晶界滑动弛豫引起的，弛豫过程激活能为172．2kJ／mol。在内耗峰位置晶界滑动消耗部分振动能，合金韧性在此处出现极大值。

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简介：TheX-raydiffractionpeak-shiftmethodwasintroducedintothedeterminationofdeformationfaultprobability(α)ofFe-Mn-SialloyswithvariousMncontentsandthermomechanicalcyclingnumbers.Thepreciselatticeconstantsrequiredwereobtainedbynumericalcalculationinsteadofusingstandardsamplewithoutanyfault.Theinfluenceofinternalstressonthedeterminedαhasbeenevaluated,andthecausedrelativeerrorwasdeterminedasabout4%andthusnegligible.TheresultsshowthatthedeformationfaultprobabilityincreaseswithdecreasingMn-contentandincreasingcyclenumber,whicharequalitativelyconsistentwiththoseresultsofPsfdeterminedbypeak-broadeningmethod.

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简介：TheevolutionofmicrostructureandmechanicalpropertiesofAl-0.4Cu-0.14Si-0.05Mg-0.2Fe(wt.%)alloys,micro-alloyedwithZr,TiandSc,wereinvestigated.Theadditionof0.2%ZrtobasealloyacceleratestheprecipitationofSi-richnano-phaseinα-Almatrix,whichplaysanimportantroleinimprovingthemechanicalpropertiesofanalloy.Thetensilestrengthincreasesfrom102MPaforthebasealloyto113MPafortheZr-modifiedalloy.Adding0.2%Zr+0.2%Titobasealloyeffectivelyrefinesa-AlgrainsizeandacceleratestheprecipitationofSiandCuelements,leadingtoheavysegregationatgrainboundary.Byfurtheradding0.2%SctoZr+Timodifiedalloy,thesegregationofSiandCuelementsissuppressedandmoreSiandCuprecipitatesappearedinα-Almatrix.AccompaniedwiththeformationofcoherentAl3Scphase,thetensilestrengthincreasesfrom108MPafortheZr+Timodifiedalloyto152MPafortheSc-modifiedalloy.DuetoexcellentthermalstabilityofAl3Scphase,theSc-modifiedalloyexhibitsobviousprecipitationhardeningbehaviorat350℃,andthetensilestrengthincreasesto203MPaafterholdingat350℃for200h.

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简介：Aneffectivedispersion-strengtheningphaseinAl-8Fe-2Mo-2Zr-2Nd-0.7Ti-1.6SialloywasidentifiedtobeanagedprecipitatephasewithpossiblechemicalstoichiometryofAl20（Ti,Mo）2Ndandfcccrystalstructurewithao=1.455nm.ThestructurewasdeterminedtobeFm3mspacegroup.

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

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简介：介绍了Fe3Si的一些基本特性及Fe3Si薄膜的几种主要制备方法,重点介绍了分子束外延法中不同类型衬底、温度对Fe3Si薄膜形成的影响,并且分析了各种制备方法中的一些重要参数对薄膜结构及性质的影响。随着Fe3Si薄膜制备工艺的不断完善,Fe3Si薄膜将会成为一种性能优秀的自旋电子器件。

简介：采用单辊法制备了宽20mm、厚25μm的Fe78Si9B13合金带材，用绕带机将其绕制成环型磁芯，然后将磁芯进行退火处理，结果表明，随着退火温度的升高，Fe78Si9B13非晶磁芯的初始磁导率m、饱磁感应强度Bs和矫顽力Hc呈先增大后减小的趋势，当退火温度达到450℃时，磁化曲线呈现出一定的线性关系，即恒导磁特性。将经4500（=／100min退火的Fe78Si9B13非晶磁芯用环氧树脂进行封装后，环氧封装后μi和Bs减小，而Hc和损耗Ps增大，磁化曲线和损耗曲线的形状与封装前相同。

简介：Al-inducedlateralcrystallizationofamorphoussiliconthinfilmsbymicrowaveannealingisinvestigated.ThecrystallizedSifilmsareexaminedbyopticalmicroscopy,Ramanspectroscopy,transmissionelectronmicroscopyandtransmissionelectrondiffractionmicrography.Aftermicrowaveannealingat480℃for50min,theamorphousSiiscompletelycrystallizedwithlargegrainsofmain(111)orientation.Therateoflateralcrystallizationis0.04μm/min.Thisprocess,labeledMILC-MA,notonlylowersthetemperaturebutalsoreducesthetimeofcrystallization.ThecrystallizationmechanismduringmicrowaveannealingandtheelectricalpropertiesofpolycrystallineSithinfilmsareanalyzed.ThisMILC-MAprocesshaspotentialapplicationsinlargeareaelectronics.

简介：Fe-Ni-Almixturesashot-pressingsinteringadditivetoTitaniumdiboride(TiB2)werestudied.ItisfoundthatliquidalloyformedunderhightemperaturehardlyhaseffectsonthedensificationbehaviorsofTiB2-independent.Fe-Ni-AladditivejustworksasfillerbetweenTiB2particlesanddoesnotchangetheTiB2-independentsinteringbehaviors.PressingmodehasagreateffectontheliquidflowingbetweenTiB2particles.Multiple-stepspressingmodewillgivemoretimeandspacefortheliquidflowingandimprovetherelativedensityofTiB2-Fe-Ni-Alcermet.

简介：AhypereutecticAl-Sialloypowderwaspreparedbyultrasonicgasatomizationprocess.Themorphologies,microstructureandphaseconstituentofthealloypowderwerestudied.TheresultsshowedthatpowderofthealloywasveryfineanditsrnicrostructurewasmainlyconsistedofSicrystalsplusintermetalliccompoundAl9FeSi3,whichwere.veryfineanduniformlydistributed.

简介：由微观结构和机械性质上的艾尔的Si的部分或完整的替换的效果是广泛地与多角形的铁酸盐矩阵在多相的导致转变的粘性(旅行)学习了钢，但是很少在bainitic旅行钢学习了。当为第三代的进程参数的一个函数预付高力量钢(AHSS)，现在的学习的目的是适当地在bainitic钢在bainite转变，微观结构和机械性质上调查艾尔和Si的效果以便为alloying设计提供指南。而Si增加在bainite转变动力学导致延迟，它从dilatometry学习，微结构调查和艾尔增加导致加速的张力的性质大小被显示出。艾尔的增加延迟进在使温度保持比450高的珠泽铁和碳化物的奥氏体的分解?敲牣獹慴汬穩瑡潩?湡敮污湩?慷?灡汰敩?潴愠???┶楓猠整汥琠?浩牰癯?桴?慭湧瑥捩瀠潲数瑲敩?吠敨椠灭捡?景愠?慣瑳猠牴灩瀠敲愭湮慥楬杮漠?桴?業牣獯牴'壮肭?整瑸牵?瀠敲楣楰慴楴湯愠摮洠条敮楴?牰灯牥楴獥眠牥?湩敶瑳杩瑡摥戠?汥'虪箿珵u潲敢洠捩潲愭慮祬楳?琠慲獮業獳潩?汥'虪箿珱＾驿麙盏?愠摮堠爭祡搠晩牦捡楴湯愠慮祬楳?攠'?瑉眠獡映畯摮琠慨?桴?牰'虨宫摤嫕?景猠'虦?桰獡?慰瑲捩敬?...

简介：Theimplantedionrange,thedepthprofileandthefilmsttuctureoftheimplantedlayerwerestudied;thecarrierconcentrationandthemobilityweremeasured;theconductivitymechanismofthefilmimplantedFeintoAl2O3ceramicwasdiscussed.TheconclusionisthattheimplantedFe2+ionsmoveintoAl2O3latticeandreplaceAl3+toformsubs-titutionimpuritiessothattheionimplantedlat-tice,ascomparedwiththeoriginalone,presentsaneffectivenegativechargewhichformsanegativechargecenter.Avacancyisboundarroundit,andanacceptorisintroducedintheforbiddenband.

简介：用x射线衍射、光学显微镜、扫描电镜和能谱等分析Al-10Ce中间合金的相组成和微观形貌，研究Al-10Ce中间合金对α-铝的变质处理效果及对α-铝的长效性变质和重熔稳定性变质，并与钠盐变质进行了对比。结果表明：Al-10Ce中间合金用量对变质效果的影响很大，Al-10Ce中间合金用量为0．30％左右时达到最佳变质效果，用量少变质效果差，用量过多则形成过变质。用Al-10Ce中间合金对α-铝进行变质，可取得极好的变质效果，变质持续时间比钠盐变质剂更长久且具有更好的重熔稳定性。

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