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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.

简介：X6创新触屏操控技术让跑步回归纯粹而不失智感。宽大智慧触屏搭配自有平板浑然一体,指尖触启心舞动。X6无需手持,解放双手,无线监测心率,专注跑步,快意畅跑聆听内心声音。驭跑无界,以专注者心境奔驰天地。X6宽大跑台搭载全跑台专利减震技术并可智能传感体重数据。驰动宽阔坦荡,如舞台之上绽放人生华彩。扫码连接微信,步数同步计入微信运动,建立加入跑步群,乐享跑趣;采集身体数据,定制选择运动健身处方,科学趣味便捷。

简介：Thisstudywasconductedtodiscusstheeffectofrollingstrainonmicrostructureandtensilepropertiesofdual-phaseMg-8Li-3Al-2Zn-0.5Y(wt%)alloy,whichwaspreparedbycasting,andthenhomogenizedandrolledat200℃.Therollingprocesswasconductedwith10%reductionperpassandfivedifferentaccumulatedstrains,varyingfrom10%to70%.Theresultsindicatethattheas-castandas-rolledMg-8Li-3Al-2Zn-0.5Yalloysarecomposedofα-Mg,β-Li,AlLiandAl2Yphases.Afterrollingprocess,anisotropicmicrostructurewasobserved.a-Mgphasegotelongatedinbothrollingdirectionandtransversedirectionwiththeadditionofrollingstrain.Consequently,thestrengthofthealloyinbothdirectionswasnotablyimprovedwhereastheelongationdeclined,mainlycausedbystrainhardeninganddispersionstrengthening.Thetensilepropertiesoftheas-rolledalloysintheRD,nomattertheYS,UTSortheelongation,arehigherthanthoseoftheTDduetotheirlargerdeformationstrainandsignificantanisotropyinthehcpα-Mgphase.Inaddition,thefractureandstrengtheningmechanismofthetestedalloyswerealsoinvestigatedsystematically.

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简介：Bismuth-basedSillen-Aurivilliuscompoundsarebeingexploredasefficientphotocatalystmaterialsforthedegradationoforganicpollutantsduetotheiruniquelayeredstructurethatfavourseffectiveseparationofelectron-holepairs.Inthiswork,wesynthesizedSillen-Aurivillius-relatedBi2YO4CIwiththebandgapof2.5eVbyasimplesolid-statereactionandsensitizedwithrhodiumnickel(RhNi)nanoparticles(NPs)toformtheRhNi/Bi2YO4CIheterostructure.PhotocatalyticactivitiesofBiOCI,Bi2YO4CIandtheRhNi/Bi2YO4CIheterostructurewereexaminedforthedegradationofrhodamine-6Gundervisible-lightillumination.ResultsdemonstratedthatthephotocatalyticdyedegradationefficiencyofRhNi/Bi2YO4CIheterostructuresishigherthanthoseofBiOCIandBi2YO4CI,attributedtothesynergisticmolecular-scalealloyingeffectofbimetallicRhNiNPs.Theplausiblemechanismforthedegradationofrhodamine-6Gandtheeffectiveelectron-holepairutilizationmechanismwerediscussed.

简介：许多职场人士往往会遇到这样的问题，每天忙忙碌碌，最终却一无所获：每天披星载月，任劳任怨地工作，却得不到加薪和重用。类似的问题总是困扰着多数人，他们的辛苦劳作有时不但没有得到相应的回报，反而却引起别人的猜忌、指责，那问题究竟出在哪里？在职场上，你是千里马还是头驴？让我们一起来看看华为内部的故事。

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简介：Aone-pot,solvent-thermalprocesswasusedtocreatetheultrafineZnFe2O4nanoparticlesphotocatalyst.Duringthesolvent-thermalprocess,theinsituself-formingNaClnotonlyservedasa"cage"toconfinetheiondiffusion,butalsoactedasamicroreactorfornanocrystallitegrowth.Anaverageparticlesizeof~10nmandahigh-specificsurfaceareaof~112.9m2/gwereobservedfortheultrafineZnFe2O4nanoparticlesOwingtothesynergisticeffectofultrafineparticlesize,thefullutilizationofthevisiblelightregionandhighconductionband(CB)position,ultrafineZnFe2O4photocatalystdisplayedanefficientphotocatalyticCO2reductionundervisiblelightillumination.Besides,theultrafineZnFe2O4photocatalystshowedhighproductionselectivityforCH3CHOandC2H5OHgenerationinaqueousCO2/NaHCO3solution.Thisworkmayprovideanewideaforthesynthesisofnewhigh-efficiencyphotocatalysts.

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