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40220112··：1002－025X(2011)02-0012-04HAZ1，1，1，1，1，2（1．，710048；2．，721008）：、，。，，，，，，。，，，；，，，。：；；；：TG453.9：B：2010-09-14：：（00k904）；（00X901）0，［1］。，，，CT55CT90，483MPa689MPa，203.9GPa，，CT110［2］。，，16Cr、，［3－6］。、，、、、、、［7－11］。20096CT80，。，，（HAZ），，HAZ，，。11．1，，。，，。，，。1．2。1。1，2，3。（ωH）、（Tm）、12WeldingTechnologyVol．40No．2Feb.2011（tH）、（t8/5）。22．11，＋。2，，，，，，，，［12-13］。2a，，，，，、ε－，，，，。（）2b，，，，“”，，，，，“”，。2c，，，，。、，。2d，，，，，。，，，，，，。，，3a，“”，，，，，3b，，··11（）（％）CSiMnPSFe0．1～0．20．2～0．40．7～1．0≤0．02≤0．02≤1．52AKV/JReL/MPaRm/MPaA（％）CT80≥25≥520≥650≥243HAZE/（kJ·cm-1）ωH/（℃·s－1）Tm/℃t8/5/stH/s（840℃）3．9613013001883．96959501853．96858501823．9665650—020μm2（a）（b）（c）（d）20μm20μm20μm20μm1340220112··，3c。2．2，，4。，，。，，HAZ。，，2，，，，；，。，，，，；，，，，。2．3，，5。5a，，，，，，，；5b，，。5c5d，，，2，，，。2．4，，，，，t8/5，，。，，3HAZ（c）（a）（b）432302826242220/℃/JERW600700800900130014001200110010005HAZ（a）（b）（c）（d）14WeldingTechnologyVol．40No．2Feb.2011，。HAZ，，HAZ，，，4。2．5，4，6，4，，，，，，，。3（1），，，，，，，，。（2），，，，，。（3），，，，。（4）4，，，，，，。：［1］．［J］．，，.：．［2］，．［J］．，2007，35（6）：85－86．［3］．［J］．，2006，34（1）：1－6．［4］，．［J］．，1995，6（3）：22－33．［5］RoertM．DownholeCTtools，akeytothefuture［R］．SPE46041，1998．［6］JonesRD．Developingcoiled-tubingtechniquesontheKarachaganakfield，Kazakhstan［R］．SPE68349，2001．［7］CooperRE．Coiledtubinginhorizontalwells［R］．SPE17581，1988．［8］StevenD．ProductionapplicationofCTgrowing［J］．AmericanOil＆GasReporter，1994（1）：79．［9］Craigsh．Amulti-wellreviewofcoiledtubingforcematching［R］．SPE81715，2003．［10］CrabtreeAR，GavinW．Coiledtubinginsourenvironments-theoryandpractice［R］．SPE89614，2004．［11］BurgosR，AllcornM，MallalieuR，etal．Eliminatingthehumanerrorduringcoiled-tubingoperations［R］．SPE100164，2006．［12］SawaiT，ShibaKandHishinumaA．Microstructureofweldedandthermal-agedlowactivationsteelF82HIEAheat［J］．JournalofNuclearMaterials，2000，283－287（1）：657－661．［13］XuejunJia，DaiY．MicrostructureandmechanicalpropertiesofF82HweldmetalirradiatedinSINQtarget-3［J］．JournalofNuclearMaterials，2004，329－333（1）：309－313．··：（1967—），，，，、，70．4Tm/℃ReL/MPaRm/MPaA（％）Z（％）650579．89701．8515．552．85850622．51709．1517．557．60950525．79713．8617．551．601300593．1709．8812．561．1530027024021018015012090HAZ/mmHV0.51300950850650-3-2-1012346HAZ41540220112·、·ThermalsimulationanalysisofHAZmicrostructureandpropertiesofcoiledtubingweldingbyhighfrequencyresistanceweldingZHANGMin1，ZHAOPeng-kang1，WANGWen-wu1，LIJi-hong1，BIZong-yue1，2（1．SchoolofMaterialScienceandEngineering，Xi’anUniversityofTechnology，Xi’an710048，Shaanxipro.，China；2．BaojiPetroleumSteelPipeCo．，Ltd．，Baoji721008，Shaanxipro.，China）P12-15Abstract：Bymeansofthermalsimulationtechnique，microscopicanalysismethodandmacromechanicalpropertytesting，themicrostructureandmechanicalpropertiesatdifferentlocationswithinheat-affectedzone（HAZ）ofthejointduringthehighfrequencyresistanceweldingofgranularbainitesteelforcoiledtubingweldingwasanalyzed．Atthesametime，comparedwiththemicrostructureandmechanicalpropertiesofbasematerial，theresultsshowedthatwithintheheat-affectedzoneofthejoint，theoverheatedcoarsegrainzonewasmainlycomposedofstripferritemicrostructure，fracturesurfacewasmainlycomposedofuniformdimple，whichwerebroadanddeep，withbettertoughnessandrelativelyhigherimpactenergyvalue．Thenormalizedandnotfullynormalizedareasweremainlycomposedofpolygonalferrite，thegrainboundarybetweengrainswasclear，fracturesurfacewasmainlyquasi-cleavagefracture，andtheimpactenergywasrelativelylow．Therewasnoobviousphasechangeinthetemperingarea，thegrainsizewasslightlyincreasedcomparedwiththatofthebasematerial，andoftemperzonewasincreasedslightlythanthebasematerial，recoveryandre-crystallizationwasgeneratedinthemicrostructure，andthematerialimpactenergyvaluesrisedslightly．Keywords：coiledtubing，granularbainiticsteel，thermalsimulationtechnique，highfrequencyresistanceweldingInfluenceofgradientlayeronthesolderedjointstrengthofYG6hardalloyand40CrsteelSHAHong-wei1，CHENJian2，LIUXue-piao2，LIANGHuan2（1．ZhangjiagangChangliMachineryCo．，Ltd．，Zhangjiagang215621，Jiangsupro.，China；2．SchoolofMaterialScience，JiangsuUniversityofScienceandTechnology，Zhenjiang212003，Jiangsupro.，China）P16-19Abstract：Thegradientlayerwhichpreparedbypowderlaminationmethodwasusedastheinterlayermaterialtorelievetheresidualstressofthejoint．Thesolderteston40CrsteelandYG6hardalloywasconductedundertheconditionthatbrazingtemperaturewas1040℃andtimedurationwas15min．byselectingCuMnNibrazingfillermetal.Theresultsshowedthattheinternalstressoftheweldingjointwouldbereducedobviouslywhileitsstrengthwasincreasedsignificantlybyusinggradientlayerastheinterlayermaterialtorelievetheresidualstress．Thejointstrengthwasupto656MPawhengradientlayerBwasused．Thenumberofgradientlayershadobviouseffectonthestrengthofsolderedjoints．Undertheconditionthatthethicknessofthegradientlayerwasthesame，themorethenumberofthelayers，thehighertheabilitytorelievetheinternalstress，andthehigherthejointstrength．Keywords：YG6hardalloy，40Crsteel，vacuumbrazing，strength，gradientlayer，residualstressWeldingconstructiontechnologyof5083aluminumalloyforroofweldingofLNGfullcontainmenttankWANGXiao-Jun1，2，WUJian-ying2，XUEZhou3，LIFen-kun3（1．StateKeyLaboratoryofGansuAdvancedNon-FerrousMetalM