ASTM G129-2000(2006) 金属材料对环境协助开裂敏感性评价用慢应变率试验的标准实施规范
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【英文标准名称】:StandardPracticeforSlowStrainRateTestingtoEvaluatetheSusceptibilityofMetallicMaterialstoEnvironmentallyAssistedCracking
【原文标准名称】:金属材料对环境协助开裂敏感性评价用慢应变率试验的标准实施规范
【标准号】:ASTMG129-2000(2006)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:
【英文主题词】:corrosiontesting;hydrogenembrittlement;liquidmetalembrittlement;stresscorrosioncracking;sulfidestresscracking;tensiontesting
【摘要】:1.1Thispracticecoversproceduresforthedesign,preparation,anduseofaxiallyloaded,tensiontestspecimensandfatiguepre-cracked(fracturemechanics)specimensforuseinslowstrainrate(SSR)teststoinvestigatetheresistanceofmetallicmaterialstoenvironmentallyassistedcracking(EAC).WhilesomeinvestigatorsutilizeSSRtesttechniquesincombinationwithcyclicorfatigueloading,noattempthasbeenmadetoincorporatesuchtechniquesintothispractice.1.2Slowstrainratetestingisapplicabletotheevaluationofawidevarietyofmetallicmaterialsintestenvironmentswhichsimulateaqueous,nonaqueous,andgaseousserviceenvironmentsoverawiderangeoftemperaturesandpressuresthatmaycauseEACofsusceptiblematerials.1.3TheprimaryuseofthispracticeistofurnishacceptedproceduresfortheacceleratedtestingoftheresistanceofmetallicmaterialstoEACundervariousenvironmentalconditions.Inmanycases,theinitiationofEACisacceleratedthroughtheapplicationofadynamicstraininthegaugesectionoratanotchtiporcracktip,orboth,ofaspecimen.Duetotheacceleratednatureofthistest,theresultsarenotintendedtonecessarilyrepresentserviceperformance,butrathertoprovideabasisforscreening,fordetectionofanenvironmentalinteractionwithamaterial,andforcomparativeevaluationoftheeffectsofmetallurgicalandenvironmentalvariablesonsensitivitytoknownenvironmentalcrackingproblems.1.4FurtherinformationonSSRtestmethodsisavailableinISO7539andinthereferencesprovidedwiththispractice().1.5si-value;Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Furthermore,insomecases,specialfacilitieswillberequiredtoisolatethesetestsfromlaboratorypersonnelifhighpressuresortoxicchemicalenvironments,orboth,areutilizedinSSRtesting.
【中国标准分类号】:H25
【国际标准分类号】:77_040_99
【页数】:7P.;A4
【正文语种】:
【原文标准名称】:金属材料对环境协助开裂敏感性评价用慢应变率试验的标准实施规范
【标准号】:ASTMG129-2000(2006)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:
【英文主题词】:corrosiontesting;hydrogenembrittlement;liquidmetalembrittlement;stresscorrosioncracking;sulfidestresscracking;tensiontesting
【摘要】:1.1Thispracticecoversproceduresforthedesign,preparation,anduseofaxiallyloaded,tensiontestspecimensandfatiguepre-cracked(fracturemechanics)specimensforuseinslowstrainrate(SSR)teststoinvestigatetheresistanceofmetallicmaterialstoenvironmentallyassistedcracking(EAC).WhilesomeinvestigatorsutilizeSSRtesttechniquesincombinationwithcyclicorfatigueloading,noattempthasbeenmadetoincorporatesuchtechniquesintothispractice.1.2Slowstrainratetestingisapplicabletotheevaluationofawidevarietyofmetallicmaterialsintestenvironmentswhichsimulateaqueous,nonaqueous,andgaseousserviceenvironmentsoverawiderangeoftemperaturesandpressuresthatmaycauseEACofsusceptiblematerials.1.3TheprimaryuseofthispracticeistofurnishacceptedproceduresfortheacceleratedtestingoftheresistanceofmetallicmaterialstoEACundervariousenvironmentalconditions.Inmanycases,theinitiationofEACisacceleratedthroughtheapplicationofadynamicstraininthegaugesectionoratanotchtiporcracktip,orboth,ofaspecimen.Duetotheacceleratednatureofthistest,theresultsarenotintendedtonecessarilyrepresentserviceperformance,butrathertoprovideabasisforscreening,fordetectionofanenvironmentalinteractionwithamaterial,andforcomparativeevaluationoftheeffectsofmetallurgicalandenvironmentalvariablesonsensitivitytoknownenvironmentalcrackingproblems.1.4FurtherinformationonSSRtestmethodsisavailableinISO7539andinthereferencesprovidedwiththispractice().1.5si-value;Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Furthermore,insomecases,specialfacilitieswillberequiredtoisolatethesetestsfromlaboratorypersonnelifhighpressuresortoxicchemicalenvironments,orboth,areutilizedinSSRtesting.
【中国标准分类号】:H25
【国际标准分类号】:77_040_99
【页数】:7P.;A4
【正文语种】:
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