ASTM F519-2008 电镀/涂层处理和设备环境的机械氢脆化评价的标准试验方法

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【英文标准名称】:StandardTestMethodforMechanicalHydrogenEmbrittlementEvaluationofPlating/CoatingProcessesandServiceEnvironments
【原文标准名称】:电镀/涂层处理和设备环境的机械氢脆化评价的标准试验方法
【标准号】:ASTMF519-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:F07.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cleaner;coating;delayedfailure;fluids;hydrogenembrittlement;maintenancechemicals;plating/coating;steel;stresscracking;threshold;Aircraftchemicals/processes;Delayedfailure;Electrodepositedcoatings;Electroplatedcoatings;Electroplateds
【摘要】:Plating/coatingProcesses8212;Thistestmethodprovidesameansbywhichtodetectpossiblehydrogenembrittlementofsteelpartsduringmanufacturebyverifyingstrictcontrolsduringproductionoperationssuchassurfacepreparation,pretreatments,andplating/coating.Itisalsointendedtobeusedasaqualificationtestfornewplating/coatingprocessesandasaperiodicinspectionauditforthecontrolofaplating/coatingprocess.ServiceEnvironment8212;Thistestmethodprovidesameansbywhichtodetectpossiblehydrogenembrittlementofsteelparts(plated/coatedorbare)duetocontactwithchemicalsduringmanufacturing,overhaulandservicelife.ThedetailsoftestinginaserviceenvironmentarefoundinAnnexA5.1.1Thistestmethoddescribesmechanicaltestmethodsanddefinesacceptancecriteriaforcoatingandplatingprocessesthatcancausehydrogenembrittlementinsteels.Subsequentexposuretochemicalsencounteredinserviceenvironments,suchasfluids,cleaningtreatmentsormaintenancechemicalsthatcomeincontactwiththeplated/coatedorbaresurfaceofthesteel,canalsobeevaluated.1.2Thistestmethodisnotintendedtomeasuretherelativesusceptibilityofdifferentsteels.TherelativesusceptibilityofdifferentmaterialstohydrogenembrittlementmaybedeterminedinaccordancewithTestMethodF1459andTestMethodF1624.1.3ThistestmethodspecifiestheuseofairmeltedAISIE4340steelperSAEAMS-S-5000(formerlyMIL-S-5000)heattreatedto260x2013;280ksi(poundspersquareinchx1000)asthebaseline.Thiscombinationofalloyandheattreatlevelhasbeenusedformanyyearsandalargedatabasehasbeenaccumulatedintheaerospaceindustryonitsspecificresponsetoexposuretoawidevarietyofmaintenancechemicals,orelectroplatedcoatings,orboth.Componentswithultimatestrengthshigherthan260x2013;280ksimaynotberepresentedbythebaseline.Insuchcases,thecognizantengineeringauthorityshalldeterminetheneedformanufacturingspecimensfromthespecificmaterialandheattreatconditionofthecomponent.Deviationsfromthebaselineshallbereportedasrequiredbysection12.1.2.Thesensitivitytohydrogenembrittlementshallbedemonstratedforeachlotofspecimensasspecifiedinsection9.5.1.4Testproceduresandacceptancerequirementsarespecifiedforsevenspecimensofdifferentsizes,geometries,andloadingconfigurations.1.5Pass/FailRequirements8212;Forplating/coatingprocesses,specimensmustmeetorexceed200husingasustainedloadtest(SLT)atthelevelsshowninTable1.1.5.1Theloadingconditionsandpass/failrequirementsforserviceenvironmentsarespecifiedinAnnexA5.1.5.2Ifapprovedbythecognizantengineeringauthority,aquantitative,accelerated(x2264;24h)incrementalstep-load(ISL)testasdefinedinAnnexA3maybeusedasanalternativetoSLT.1.6Thistestmethodisdividedintotwoparts.Thefirstpartgivesgeneralinformationconcerningrequirementsforhydrogenembrittlementtesting.Thesecondiscomposedofannexesthatgivespecificrequirementsforthevariousloadingandspecimenconfigurationscoveredbythistestmethod(seesection9.1foralistoftypes)andthedetailsfortestingserviceenvironments.1.7Thevaluesstatedinthefoot-pound-second(fps)systemininch-poundunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionsto......
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:18P.;A4
【正文语种】:英语