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【英文标准名称】:StandardTestMethodforDeterminingVolumeFractionbySystematicManualPointCount
【原文标准名称】:用系统的人工逐点计数法测定体积因数的标准试验方法
【标准号】:ASTME562-2008
【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】:E04.14
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Metallographicanalysis/inspection;Pointcount;Systematicmanualpointcount;Volumechange
【摘要】:Thistestmethodisbaseduponthestereologicalprinciplethatagridwithanumberofregularlyarrayedpoints,whensystematicallyplacedoveranimageofatwo-dimensionalsectionthroughthemicrostructure,canprovide,afterarepresentativenumberofplacementsondifferentfields,anunbiasedstatisticalestimationofthevolumefractionofanidentifiableconstituentorphase(1,2,3).Thistestmethodhasbeendescribed(4)asbeingsuperiortoothermanualmethodswithregardtoeffort,bias,andsimplicity.Anynumberofclearlydistinguishableconstituentsorphaseswithinamicrostructure(ormacrostructure)canbecountedusingthemethod.Thus,themethodcanbeappliedtoanytypeofsolidmaterialfromwhichadequatetwo-dimensionalsectionscanbepreparedandobserved.Acondensedstep-by-stepguideforusingthemethodisgiveninAnnexA1.1.1Thistestmethoddescribesasystematicmanualpointcountingprocedureforstatisticallyestimatingthevolumefractionofanidentifiableconstituentorphasefromsectionsthroughthemicrostructurebymeansofapointgrid.1.2TheuseofautomaticimageanalysistodeterminethevolumefractionofconstituentsisdescribedinPracticeE1245.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H10
【国际标准分类号】:77_040_99
【页数】:7P.;A4
【正文语种】:英语