简介：Thetensile-shearfailurezoneofthelaminateddampingsteelsheetwasinvestigatedbyscanningelectronmicroscopyandX-rayphotoelectronspectroscopy.Itisfoundthatthereexistscohesivefailureinpolymersandwichandsub-boundaryfailurebetweenthesteelsheetandthepolymer.Thesub-boundarylayerisdominantlypolymermaterial.Thetensile-shearfailureofthelaminateddampingsteelsheetisaprocessduringwhichthecrazesform,growupandmergeintocracks.

简介：分层的钢纤维增强了橡胶水泥(LSFRRC)，基于国家标准的要求具体的人行道的一种新类型试验性地被研究。从平凡水泥(PC)的曲折张力的力量的不同性质，橡胶水泥(RC)，分层的钢纤维增强了水泥(LSFRC)，LSFRRC被介绍。试验性的结果与RC相比证明LSFRRC的张力的力量被4.12%与PC相比改进，在13.75%。曲折张力的性质上的负担偏转曲线被提出。LSFRRC的曲折张力的坚韧索引I10与PC相比被改进10.32次。

简介：微观结构和Ni//3艾尔的机械性质基于拥有低杂质内容的Ni-Al-Mosuperalloy-IC6，由水花免职技术的高密度被学习了。结果显示IC6合金在空间和中间的温度两个都有好张力的力量和延伸。(编辑作者摘要)6个裁判员。

简介：Theeffectofcathodichydrogenchargingonthetensileandconstantloadpropertieswasdeterminedforanausteniticstainlesssteelweldmentcomprisinga304Lsteelinthesolutiontreatedconditionasabasemetalanda308Lfillersteelasaweldmetal.Partofthe304Lsolutiontreatedsteelwasseparatelygivenadditionalsensitizationtreatmenttosimulatethemicrostructurethatwoulddevelopintheheataffectedzone.Testswereperformedatroomtemperatureonnotchedroundbarspecimens.Hydrogenchargingresultedinapronouncedembrittlementofthetestedmaterials.Thiswasmanifestedmainlyasaconsiderablelossinthedluctilityoftensilespecimensandadecreaseinthetimetofailureandthresholdstressofconstantloadspecimens.The308Lweldmetalexhibitedthehighest,andthe304Lsolutiontreatedsteelthelowest,resistancetohydrogenembrittlement.Hydrogenembrittlementwasassociatedwiththeformationofstraininducedmartensiteaswellasatransitionfrombrittletoductilefracturemorphologyonwardsthecentreofthespecimens.

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简介：疲劳行为在期间高测试的周期疲劳和5A06铝的张力的行为就anisotropy而言的合金被学习。标本的二种类型包括的纵的标本(与滚动平行方向)并且横向的标本(对滚动方向垂直)被准备。红外线的thermography被采用到监视温度进化在疲劳和张力的测试期间。在二个方向的温度进化曲线对比地被分析。它被发现温度进化在疲劳过程期间拥有四阶段：起始的温度上升舞台，慢温度衰落阶段，快速的温度上升阶段，和物件顶端的装饰物温度衰落舞台。产生四个阶段的机制的热被讨论。明显的差别罐头在疲劳力量在纵的标本和横向的标本之间被发现并且使生活疲劳。纵的标本的疲劳力量和疲劳生活比横向的标本的那些高。在期间张力并且疲劳测试过程，在横向的方向的破裂温度在纵的方向比那高。借助于红外线的thermography的疲劳力量预言由传统的方法与那有好一致性。

简介：纵的张力的性质原文如此有不同纤维体积部分的f/Ti-6Al-4Vcomposites被蒙特卡罗2-D模仿有限元素模型。纤维力量的随机的分发被二参数的Weibull功能表示。同时，接触元素和出生死亡元素被用来在debonding和纤维破裂以后描述界面的滑动过程(或矩阵裂开)分别地，它被子程序认识到在ANSYS-APDL(ANSYS参量的设计语言)应允了。试验性的结果证明收益应力和最终的张力的强度原文如此有增加的f/Ti-6Al-4Vcomposites增加纤维体积部分，当他们的相应紧张只是时相反。另外，几乎，一样的失败模式被获得在原文如此有各种各样的纤维体积部分的f/Ti-6Al-4Vcomposites什么时候界面砍力量被修理。最后，张力的力量由有限元素预言了分析与由全球分享负担的模型，预言了那相比本地人分享负担的模型和混合物的常规统治，因此画结论那个本地分享负担的模型为最终的张力的力量的预言是很完美的。

简介：Thispaperreportstheeffectoffrictionstirwelding(FSW)processparametersontensilestrengthofcastLM6aluminiumalloy.Jointsweremadebyusingdierentcombinationsoftoolrotationspeed,weldingspeedandaxialforceeachatfourlevels.Thequalityofweldzonewasinvestigatedusingmacrostructureandmicrostructureanalysis.Tensilestrengthofthejointswereevaluatedandcorrelatedwiththeweldzonehardnessandmicrostructure.Thejointfabricatedusingarotationalspeedof900r/min,aweldingspeedof75mm/minandanaxialforceof3kNshowedsuperiortensilestrengthcomparedwithotherjoints.Thetensilestrengthandmicrohardnessoftheweldedjointsfortheoptimumconditionswere166MPaand64.8Hvrespectively.

简介：Thepresentstudyisconcernedwiththeeffectoffillermetalssuchasausteniticstainlesssteel,ferriticstainlesssteelandduplexstainlesssteelontensileandimpactpropertiesoftheferriticstainlesssteelconformingtoAISI409Mgrade.Rolledplatesof4mmthicknesswereusedasthebasematerialforpreparingsinglepassbuttweldedjoints.Tensileandimpactproperties,microhardness,microstructureandfracturesurfacemorphologyofthejointsfabricatedbyausteniticstainlesssteel,ferriticstainlesssteelandduplexstainlesssteelfillermetalswereevaluatedandtheresultswerereported.Fromthisinvestigation,itisfoundthatthejointsfabricatedbyduplexstainlesssteelfillermetalshowedhighertensilestrengthandhardnesscomparedtothejointsfabricatedbyausteniticandferriticstainlesssteelfillermetals.Jointsfabricatedbyausteniticstainlesssteelfillermetalexhibitedhigherductilityandimpacttoughnesscomparedwiththejointsfabricatedbyferriticstainlesssteelandduplexstainlesssteelfillermetals.

简介：Althoughin-situgrowingcarbonnanotubes(CNTs)oncarbonfiberscouldgreatlyincreasethematrix-dominatedmechanicalpropertiesofcarbon/carboncomposites(C/Cs),italwaysdecreasedthetensilestrengthofcarbonfibers.Inthiswork,CNTswereintroducedintounidirectionalcarbonfiber(CF)preformsbyelectrophoreticdeposition(EPD)andtheywereusedtoreinforceC/Cs.EffectsofthecontentofCNTsintroducedbyEPDontensilepropertyofunidirectionalC/Cswereinvestigated.ResultsdemonstratedthatEPDcouldbeusedasasimpleandefficientmethodtofabricatecarbonnanotubereinforcedC/Cs(CNT—C/Cs)withexcellenttensilestrength,whichpaysameaningfulwaytomaximizetheglobalperformanceofCNT—C/Cs.

简介：Thelargesize,crack-freeZr55Cu30Al10Ni5bulkmetallicglass(BMGs)withthediameterof54mmandtheheightof15mmwasbuiltbylasersolidformingadditivemanufacturingtechnology,whosesizeislargerthanthecriticaldiameterbycasting.Themicrostructure,tensileandcompressivedeformationbehaviorsandfracturemorphologyoflasersolidformedZr55Cu30Al10Ni5BMGswereinvestigated.Itisfoundthatthecrystallizationmainlyoccursintheheat-affectedzonesofdepositionlayers,whichconsistofAl5Ni3Zr2,NiZr2,ZrCu,CuZr2phases.Thecontentofamorphousphaseinthedepositisabout63%.Underthecompressiveloading,thedepositpresentsnoplasticitybeforefractureoccurs.Thefractureprocessismainlycontrolledbytheshearstressandthecompressiveshearfractureanglesofabout39.Thecompressivestrengthreaches1452MPa,whichisequivalenttothatofas-CastZr55Cu30Al10Ni5BMGs,andthereexistvein-likepatterns,river-likepatternsandsmoothregionsatthecompressivefractography.Underthetensileloading,thedepositpresentsthebrittlefracturepatternwithoutplasticdeformation.Thefractureprocessexhibitsnormalfracturemodel,andthetensileshearfractureangleofabout90°.Thetensilestrengthisonlyabout609MPa,andthetensilefractographymainlyconsistsofmicro-scaledcoresandvein-likepatterns,dimple-likepatterns,chocolate-likepatternsandsmoothregions.Theresultsfurtherverifiedthefeasibilityandlargepotentialoflaseradditivemanufacturingonfabricationandindustrialapplicationoflarge-scaleBMGsparts.

简介：Inthepresentpaper,twomodelsbasedonartificialneuralnetworksandgeneticprogrammingforpredictingsplittensilestrengthandpercentageofwaterabsorptionofconcretescontainingZrO2nanoparticleshavebeendevelopedatdifferentagesofcuring.Forbuildingthesemodels,trainingandtestingusingexperimentalresultsfor144specimensproducedwith16differentmixtureproportionswereconducted.Thedatausedinthemultilayerfeedforwardneuralnetworksmodelsandinputvariablesofgeneticprogrammingmodelswerearrangedinaformatofeightinputparametersthatcoverthecementcontent,nanoparticlecontent,aggregatetype,watercontent,theamountofsuperplasticizer,thetypeofcuringmedium,ageofcuringandnumberoftestingtry.Accordingtotheseinputparameters,intheneuralnetworksandgeneticprogrammingmodels,thesplittensilestrengthandpercentageofwaterabsorptionvaluesofconcretescontainingZrO2nanoparticleswerepredicted.ThetrainingandtestingresultsintheneuralnetworkandgeneticprogrammingmodelshaveshownthattwomodelshavestrongpotentialforpredictingthesplittensilestrengthandpercentageofwaterabsorptionvaluesofconcretescontainingZrO2nanoparticles.Ithasbeenfoundthatneuralnetwork(NN)andgeneexpressionprogramming(GEP)modelswillbevalidwithintherangesofvariables.Inneuralnetworksmodel,asthetrainingandtestingendedwhenminimumerrornormofnetworkgained,thebestresultswereobtainedandingeneticprogrammingmodel,when4geneswereselectedtoconstructthemodel,thebestresultswereacquired.Althoughneuralnetworkhavepredictedbetterresults,geneticprogrammingisabletopredictreasonablevalueswithasimplermethodratherthanneuralnetwork.

简介：Al18B4O33络腮胡子由用一个化学降水方法，和一个铝矩阵的SnO2粒子是涂的合成由涂的络腮胡子增强了被制作由压榨扔技术。SnO2涂层能与铝矩阵反应在期间，这被发现压榨扔过程，和Sn粒子在在Al18B4O33络腮胡子和矩阵之间的接口附近被导致。在房间温度的张力的测试显示Al18B4O33络腮胡子的张力的力量增强了铝矩阵合成罐头被SnO2的合适的内容提高涂层。有各种各样的络腮胡子涂层的composites满足展览最大值在大约300<的张力的粘性

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.

简介：这研究调查低温实验法的张力的性质和小说的破裂行为搅动焊接并且32Mn-7Cr-1Mo-0.3N钢的焊接以后的对待热的关节。低温实验法的易碎的骨折，发生在同样焊接的关节，与在联合乐队结构包含钨的剩余粒子有关。韧化的焊接以后的水导致了关节的低温实验法的intergranular易碎物，它在韧化的焊接以后的水期间与溶质原子的非平衡分离有关。在550点退火吗？？