ASTM E604-1983(2008) 金属材料动态撕裂的标准试验方法

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【英文标准名称】:StandardTestMethodforDynamicTearTestingofMetallicMaterials
【原文标准名称】:金属材料动态撕裂的标准试验方法
【标准号】:ASTME604-1983(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1983
【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】:E28.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Dynamictear(DT)testing;Fracturetesting--metals/alloys;Metalsandmetallicmaterials;Pendulumtest;Tearresistance
【摘要】:TheDTenergyvalueisameasureofresistancetorapidprogressivefracturing.Inanumberofapplications,theenhancedresistancethatmaydevelopduringaboutoneplatethicknessofcrackextensionfromasharpnotchisofmajorinterest.Inthetestmethod,asufficientlylongfracturepathisprovidedsothattheresultsserveasameasureofthisproperty.Fracturesurfacesofnonausteniticsteelstestedintheirtemperaturetransitionregionhaveareasthatappearbrightandareasthatappeardull.Thebright,facetedappearingareasaretermedx201C;cleavagex201D;fracture,andthedullappearingareasaretermedx201C;shearx201D;fractureaftertheirrespectivemodeoffractureonamicroscale.Thistestmethodcanservethefollowingpurposes:Inresearchanddevelopment,toevaluatetheeffectsofmetallurgicalvariablessuchascomposition,processing,orheattreatment,oroffabricatingoperationssuchasformingandweldingonthedynamictearfractureresistanceofneworexistingmaterials.Inserviceevaluation,toestablishthesuitabilityofamaterialforaspecificapplicationonlywhereacorrelationbetweenDTenergyandserviceperformancehasbeenestablished.Forinformation,specificationsofacceptance,andmanufacturingqualitycontrolwhenaminimumDTenergyisrequested.Detaileddiscussionofthebasisfordeterminingsuchminimumvaluesinaparticularcaseisbeyondthescopeofthistestmethod.1.1Thistestmethodcoversthedynamictear(DT)testusingspecimensthatare3/16in.to5/8in.(5mmto16mm)inclusiveinthickness.1.2Thistestmethodisapplicabletomaterialswithaminimumthicknessof3/16in.(5mm).1.3Thepressed-knifeproceduredescribedforsharpeningthenotchtipgenerallylimitsthistestmethodtomaterialswithahardnesslevellessthan36HRC.Note18212;Thedesignation36HRCisaRockwellhardnessnumberof36onRockwellCscaleasdefinedinTestMethodsE18.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:8P.;A4
【正文语种】:英语