NF A89-523-2006 焊缝无损检测.超声波试验.奥氏体刚和镍合金焊缝试验

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【英文标准名称】:StandardTestMethodsforDetectingDetrimentalIntermetallicPhaseinDuplexAustenitic/FerriticStainlessSteels
【原文标准名称】:测定双联奥氏体/铁素体不锈钢不稳定金属间相的标准试验方法
【标准号】:ASTMA923-2006
【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(ASTM)
【起草单位】:A01.14
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:奥氏体的;铁素体;不锈钢;结构
【英文主题词】:duplex;intermetallic;stainlesssteels
【摘要】:1.1Thepurposeofthesetestmethodsistoallowdetectionofthepresenceofintermetallicphasesinduplexstainlesssteelstotheextentthattoughnessorcorrosionresistanceisaffectedsignificantly.Thesetestmethodswillnotnecessarilydetectlossesoftoughnessorcorrosionresistanceattributabletoothercauses.1.2Duplex(austenitic-ferritic)stainlesssteelsaresusceptibletotheformationofintermetalliccompoundsduringexposuresinthetemperaturerangefromapproximately600to1750176;F(320to955176;C).Thespeedoftheseprecipitationreactionsisafunctionofcompositionandthermalorthermomechanicalhistoryofeachindividualpiece.Thepresenceofthesephasesisdetrimentaltotoughnessandcorrosionresistance.1.3Correctheattreatmentofduplexstainlesssteelscaneliminatethesedetrimentalphases.Rapidcoolingoftheproductprovidesthemaximumresistancetoformationofdetrimentalphasesbysubsequentthermalexposures.1.4Compliancewiththechemicalandmechanicalrequirementsfortheapplicableproductspecificationdoesnotnecessarilyindicatetheabsenceofdetrimentalphasesintheproduct.1.5Thesetestmethodsincludethefollowing:1.5.1TestMethodASodiumHydroxideEtchTestforClassificationofEtchStructuresofDuplexStainlessSteels(Sections).1.5.2TestMethodBCharpyImpactTestforClassificationofStructuresofDuplexStainlessSteels(Sections).1.5.3TestMethodCFerricChlorideCorrosionTestforClassificationofStructuresofDuplexStainlessSteels(Sections).1.6Thepresenceofdetrimentalintermetallicphasesisreadilydetectedinallthreetests,providedthatasampleofappropriatelocationandorientationisselected.Becausetheoccurrenceofintermetallicphasesisafunctionoftemperatureandcoolingrate,itisessentialthatthetestsbeappliedtotheregionofthematerialexperiencingtheconditionsmostlikelytopromotetheformationofanintermetallicphase.Inthecaseofcommonheattreatment,thisregionwillbethatwhichcooledmostslowly.Exceptforrapidlycooledmaterial,itmaybenecessarytosamplefromalocationdeterminedtobethemostslowlycooledforthematerialpiecetobecharacterized.1.7Thetestsdonotdeterminetheprecisenatureofthedetrimentalphasebutratherthepresenceorabsenceofanintermetallicphasetotheextentthatitisdetrimentaltothetoughnessandcorrosionresistanceofthematerial.1.8Examplesofthecorrelationofthermalexposures,theoccurrenceofintermetallicphases,andthedegradationoftoughnessandcorrosionresistancearegiveninand.1.9Thevaluesstatedineitherinch-poundorSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H24
【国际标准分类号】:
【页数】:10P.;A4
【正文语种】:


【英文标准名称】:Aerospaceseries-Elementsofelectricalandopticalconnection;testmethods-Part204:Discontinuityofcontactsinthemicrosecondrange;GermanversionEN2591-204:1996
【原文标准名称】:航空航天.光电连接件.试验方法.第204部分:微秒级接触中断
【标准号】:DINEN2591-204-1998
【标准状态】:现行
【国别】:德国
【发布日期】:1998-03
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:紧固件;测量仪器;电力设备;电插头;电气元件;航空运输;中断;光学的;测量技术;航天运输;电的;触点;特性;规范(验收);试验;航空航天运输;测量;试验条件;额定电流;连接
【英文主题词】:Aerospacetransport;Airtransport;Aircraftcomponents;Connections;Contact;Contactresistance;Electricconductor;Electricconnectors;Electricplugs;Electrical;Electricalcomponents;Electricalinstallations;Electricalresistance;Equipment;Fasteners;Interruptions;Measurement;Measuringinstruments;Measuringtechniques;Microseconds;Optical;Properties;Ratedcurrent;Spacetransport;Specification(approval);Testduration;Testing;Testingconditions
【摘要】:
【中国标准分类号】:V20
【国际标准分类号】:49_060
【页数】:6P.;A4
【正文语种】:德语