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：TheXRPD(X-raypowderdiffractometry)patternsofsiliconpowderwithaunitcellstructureofdiamondweredeterminedfrom298to1473K.LatticeparametersofSilinearlyincreasewithtemperature.Thethermalshiftsofthepositionsofallreflectionpeaksarelinearlycorrelatedwiththetemperature.Thecoefficientsoftheintrinsiclinearthermalexpansionandvolumetricthermalexpansionweredeterminedas3.87×10-6/Kand1.16×10-5/Krespectively.ItindicatesthatSiisstillasuitablestandardintheXRPDmethodathightemperatures.

简介：ThesoftswitchingareweldinginverterreducesswitchinglossesandimprovesoperatingenvitonmentofdevicesbyusingZero-Voltage-Transition(ZVT)technique.Step-by-stepanalysisofeachtimingintervalandtheassociatingvoltageandcurrentwaveformsareincludedfortheFull-BridgeZero-Voltage-SwitchedPWMcomerter,Numerousdesignequationssupportingthephase-shiftedsoftswitchingtechniquearehighlighte.

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简介：Inthispaper,thelocationparameterδαinWeibulldistributioni.e.thelowerlimitingCTODtoughnessofhighstreengthsteelweldmentsisevalvated.formGleelesimulatedcoarsegrainedspecimens.TheCharpy-Vtransitiontem-peratureobtainedfromthesespecimensistransformedtoafracturetoughnessKICvalueatagiventemperatureusingSanz’relation.Then,thelocationparameterδαisevaluated.ThepredictedlocationparameterarrivesatagreementwiththelowestCTODvalueasobtainedfromthickmultilayerweldments.TheimprovementofthefracturetoughnessofmultilayerweldmentsneedstheincreaseoftheloweringlimitingCTOD.toughnessi.e.thetoughnessofthecoaregrainedzone.

简介：Inlasernon-penetrationdeeppenetrationweldingprocess,weldingmaterialwillvaporize,metalvaporandambientgaswillproduceahigherdegreeionization,whichformsplasmaofhighconcentration.Inthecaseofformingasmallhole,plasmawillejectfromthehole,andformacousticemission(AE)signals.BecauseAEinformationhasmanyadvantagessuchasnon-contactmeasuring,fastresponse,andhighratioofsignaltonoise,itcanbeusedasamonitorvariableforin-processcontrol.BystudyingAEinformation,informationofweldingpoolandsmallholecanbeobtained.AccordingtocharacteristicofAEinformation,thispaperrevealsthecorrelationbetweenweldingparametersandAEsignals,andprovidesagoodbaseforfurtherqualitycontrol.

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简介：有起始的equiaxed微观结构的BT25y合金的高温度的塑料变丑行为被热压缩测试调查。处理地图被建立评估力量驱散效率()并且识别流动不稳定性区域。当紧张活动范围稳定状态时，处理窗户的最佳在盖住大多数学习变丑温度和1的紧张率的区域被散布吗？

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