简介:AnalyzedandstudiedthecharactersofhighstrengthlowalloysteelwhichcontainMo,Cr,NbandNi.etc.Followingactualrolling,combiningthefeatureofrollingmode,andexploitingtheequipmentadvantageof5mHeavyPlateMill,optimizedthematerialdesign,heatingtemperatureandrollingmethod,stabilizedrollingprocessofthinalloyedsteel,thequalityindexwasadvanced.
简介:Itisofgreatimportanceforobtainingtheperfectweldingpropertiestocontroltheacicularferrite(AF)transformationbehaviorreasonablyinsteelweld.AFcontinuoustransformationkineticsintheHSLAsteelweldwascalculatedandmodeledbasedonthedirectgrowthontheinclusionsinertinterface.Thesimulationresultsarecoincidentwiththeexperimentalvaluewell.
简介:Byusingthermo-simulation,AugeranalysisandCharpyⅤimpacttestandwiththeobservationofthemicrostructuresinwhichcleavagecrackwasinitiated,themorphologyandtoughnessofthelocalbrittlezoneofC-MnandCr-Ni-Momultipassweldmetalshavebeeninvestigated.TheresultsindicatedthatthelocalbrittlezoneinC-MnweldmetalswithlowandhighMn%andCr-Ni-Moweldmetalsisdifferent.Withstatisticalanalysis,ithasbeenrevealedthatthemorethelocalbrittlezoneandthelowertheirtoughness,thelowerthetoughnessoftheentireweldmetals.Thealloyelementshaveanoticeableinflu-enceonthetoughnessofthelocalbrittlezone,therebychangingthetoughnessofweldmetals.
简介:InthepresentstudyanattempthasbeenmadetoinvestigatetherelationshipbetweenthevariationsinthefoulingassemblageandcorrosionbehaviourofHSLAsteelatthreecoastallocationsintheGulfofMarmar,India,overaperiodof24months.OysterfoulingwasdominantintheTuticorinopensea,whilebarnacleswerethemajorfoulantsintheTuticorinharbourandMandapam.ThefoulingloadintheTuticorinwaterswashigherwhencomparedtotheMandapamwaters.Thecorrosionratesdecreasedprogressivelywiththeimmersiontimeatallthreetestlocations.IntheTuticorinopensea,thecorrosionrateswerehigherwhencomparedtotheothertwolocationsthroughoutthestudyperiod.ThesurfaceofthecouponswascharacterizedbycrevicesbeneaththehardfoulersintheTuticorinharbourandMandapam,whereasintheTuticorinopensea,thecouponsexperiencedcrevicesofatunnelingnature.Thepercentageofthelossofthetensilestrengthincreasedwithtimeatallthetestlocations.
简介: 这是我插队时的一件事情.我插队的地方叫蚂蚁湾.我们蚂蚁湾一共四个知青.我和老李是县城的,另两个是上海的. 我们四个知青就住在公房里,白天下田劳动,晚上回来瞎吹牛.……
简介:Amethodoftestingoftheplanedistributionofanisotropy,Astudyontemperatureanalysisofswitchedreluctancemotor,Animage-basedapproachforPreisachfunctioncalculation,Developmentofnon-orientedthingaugeelectricalsteelsheetseriesforhighfrequencyuse,DynamicRemagnetizationofMagneticCircuitsMadeofElectricalSteelUndertheEffectofDifferentWaveformsVoltage,Estimationofironlossdistributionbyimagehelmholtzequationmethod,Fine-grainedandcube-texturedSi-steelsheetcoilbyoxide-separator-induceddecarburization。