ASTM E1221-2006 测定K铁素体钢平面应变、断裂抑制、破裂韧性的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminingPlane-StrainCrack-ArrestFractureToughness,KIa,ofFerriticSteels
【原文标准名称】:测定K铁素体钢平面应变、断裂抑制、破裂韧性的标准试验方法
【标准号】:ASTME1221-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:E08.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:铁素体钢;机械测试;金属;钢;测试
【英文主题词】:plane-strain;sidegrooved
【摘要】:1.1Thistestmethodemploysaside-grooved,crack-line-wedge-loadedspecimentoobtainarapidrun-arrestsegmentofflat-tensileseparationwithanearlystraightcrackfront.Thistestmethodprovidesastaticanalysisdeterminationofthestressintensityfactoratashorttimeaftercrackarrest.TheestimateisdenotedKa.Whencertainsizerequirementsaremet,thetestresultprovidesanestimate,termedKIa,oftheplane-straincrack-arresttoughnessofthematerial.1.2Thespecimensizerequirements,discussedlater,provideforin-planedimensionslargeenoughtoallowthespecimentobemodeledbylinearelasticanalysis.Forconditionsofplane-strain,aminimumspecimenthicknessisalsorequired.Bothrequirementsdependuponthecrackarresttoughnessandtheyieldstrengthofthematerial.Arangeofspecimensizesmaythereforebeneeded,asspecifiedinthistestmethod.1.3Ifthespecimendoesnotexhibitrapidcrackpropagationandarrest,Kacannotbedetermined.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandards.Thevaluesgiveninparenthesesareprovidedforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:19P.;A4
【正文语种】: