【英文标准名称】:StandardPracticeforEvaluatingStress-CorrosionCrackingResistanceofLowCopper7XXXSeriesAl-Zn-Mg-CuAlloysinBoiling6%SodiumChlorideSolution
【原文标准名称】:在6%沸腾的氯化钠溶液中进行铝锌镁低铜合金的应力腐蚀断裂试验的标准实施规程
【标准号】:ASTMG103-1997(2005)
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:G01.06
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:材料试验;张应力裂纹腐蚀;铝合金
【英文主题词】:acceleratedtestenvironment;aluminum-zinc-magnesium-copperalloys;boilingsodiumchloridesolution;continuousimmersion
【摘要】:Thispracticeisnormallyusedforstress-corrosionscreeningforthedevelopmentofAl-Zn-Mg-Cualloyscontaininglessthan0.26%copper.Effectsonstress-corrosionresistanceduetovariablessuchascomposition,thermo-mechanicalprocessing,otherfabricationvariables,andmagnitudeofappliedstressmaybecompared.Foragivenmechanicalmethodofstressing,therelativestress-corrosionresistanceofthelowcopperAl-Zn-Mg-Cualloysinatmosphericexposurecorrelatesbetterwithperformanceinboiling6%sodiumchloridesolutionthanwithotheracceleratedtestingmedia(7-9).Inaddition,thispracticeisrelativelyrapid.Thispracticeisnotapplicableto2XXX(Al-Cu),5XXX(Al-Mg),6XXX(Al-Mg-Si),andthe7XXX(Al-Zn-Mg-Cu)seriesalloyscontainingmorethan1.2%copper.4.3.1For7XXXseriesalloyscontainingbetween0.26%and1.2%copper,thereisnogeneralagreementastowhetherthispracticeorPracticeG44correlatesbetterwithstress-corrosionresistanceinservice(5-8,10).1.1Thispracticeprimarilycoversthetestmediumwhichmaybeusedwithavarietyoftestspecimensandmethodsofapplyingstress.Exposuretimes,criteriaoffailure,andsoon,arevariableandnotspecified.1.2Thisstress-corrosiontestingpracticeisintendedforstaticallyloadedsmoothnon-weldedorweldedspecimensof7XXXseriesAl-Zn-Mg-Cualloyscontaininglessthan0.26%copper.Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SeeSectionforadditionalprecautions.
【中国标准分类号】:H25
【国际标准分类号】:77_120_10
【页数】:4P.;A4
【正文语种】: