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【英文标准名称】:StandardTestMethodforGreenStrengthofSpecimensCompactedfromMetalPowders
【原文标准名称】:金属粉末密压试样未烧结强度的标准试验方法
【标准号】:ASTMB312-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:B09.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:恒定负载光束设备;湿强度;粉末冶金;横向强度;未烧结强度;铝合金管;铝管;紧密金属试样;金属粉末;断裂/断裂强度;强度;横向断裂强度
【英文主题词】:constantloadingbeamdevice;greenstrength;PM;powdermetallurgy;transversestrength;unsinteredcompact;Aluminumalloys(tube);Aluminumtube;Compactedmetalspecimens;Greenstrength;Metalpowders;Rupture/rupturestrength;Strength;Transve
【摘要】:5.1Thegreenstrengthvaluedeterminedundertheconditionsspecifiedbythistestmethodisinfluencedbythecharacteristicsofthepowder,howitcompactsunderthespecifiedconditions(i.e.,theparticletoparticlebondingthatexistsfollowingcompacting),andthelubricationsystemused.5.2Knowledgeofthegreenstrengthvalueisusefultotheproduction,characterizationandutilizationofmetalpowdersinthemanufactureofPMstructuralpartsandbearings.Thetestforgreenstrengthofacompactedmetalpowdercanbeusedto:Relatetheresistanceofapressedcompacttobreakageordamageduetohandling.Comparethequalityofametalpowderorpowdermixturefromlottolot.Determinetheeffectoftheadditionofalubricantorotherpowderstoabasepowder.Evaluatepowdermixingorblendingvariables.nbsp;nbsp;nbsp;Factorsthatareknowntoinfluencethegreenstrengthofametalpowderareparticleshape,particlesizedistributionandcompressibilityofthemetalpowder.5.5Theamountandtypeoflubricantorotheradditivesandthemixingprocedureshaveastrongeffectonthegreenstrengthofspecimensproducedfrommetalpowdermixtures.1.1Thisstandardcoversatestmethodthatmaybeusedtomeasurethetransverserupturestrengthofacompactedbutunsintered(green)testspecimenproducedfromlubricatedorunlubricatedmetalpowdersorpowdermixtures.1.2Greenstrengthismeasuredbyaquantitativelaboratoryprocedureinwhichthefracturestrengthiscalculatedfromtheforcerequiredtobreakanunsinteredtestspecimensupportedasasimplebeamwhilesubjectedtoauniformlyincreasingthree-pointtransverseloadundercontrolledconditions.1.3ThistestmethodisacompanionstandardtoTestMethodB528thatcoversthemeasurementofthetransverserupturestrengthofsinteredPMtestspecimens.1.4Withtheexceptionofdensityvalues,forwhichtheg/cm3unitistheindustrystandard,andmassmeasurementsusedtocalculatedensity,thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIequivalentsshowninparentheseshavebeenconvertedinaccordancewithIEEE/ASTMStandardSI10,maybeapproximateandareonlyincludedforinformation.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.^REFERENCE:ASTMStandards:B215PracticesforSamplingMetalPowdersB243TerminologyofPowderMetallurgyB528TestMethodforTransverseRuptureStrengthofMetalPowderSpecimensB925PracticesforProductionandPreparationofPowderMetallurgyx00028;PMx00029;TestSpecimensB962TestMethodsforDensityofCompactedorSinteredPowderMetallurgyx00028;PMx00029;ProductsUsingArchimedesx02019;PrincipleE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodProduct Code:SAE AMS4174
Title:Aluminum Alloy, Flash Welded Rings, 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075-T73), Solution and Precipitation Heat Treated
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:This specification covers an aluminum alloy in the form of flash welded rings.