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SAE AMS5397 Alloy Castings, Investment, Corrosion and Heat Resistant 50ni 9.5cr 15co 3.0mo 4.8ti 5.5al 0.015b 0.95v 0.06

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Product Code:SAE AMS5397
Title:Alloy Castings, Investment, Corrosion and Heat Resistant 50ni 9.5cr 15co 3.0mo 4.8ti 5.5al 0.015b 0.95v 0.06zr Vacuum Melted, Vacuum Cast, as Cast
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat resistant nickel alloy in the form of investment castings.
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【英文标准名称】:Metallicmaterials-Methodoftestforthedeterminationofresistancetostablecrackextensionusingspecimensoflowconstraint
【原文标准名称】:金属材料.测定低限制条件下使用的样品抗稳定裂纹扩张的试验方法
【标准号】:ISO22889-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC164
【标准类型】:()
【标准水平】:()
【中文主题词】:抗裂纹扩张;抗裂纹;定义;材料试验;材料;材料测试;机械试验;金属的;金属材料;金属;抗破裂构造;测试
【英文主题词】:Crack-extension-resistance;Crackingresistance;Definitions;Materialtests;Materials;Materialstesting;Mechanicaltesting;Metallic;Metallicmaterials;Metals;Resistancetocrackformation;Testing
【摘要】:ThisInternationalStandardspecifiesmethodsfordeterminingtheresistancetostablecrackextensionintermsofcrackopeningdisplacement,δ5,andcriticalcracktipopeningangle,ψc,forhomogeneousmetallicmaterialsbythequasistaticloadingofcrackedspecimensthatexhibitlowconstrainttoplasticdeformation.Compactandmiddle-crackedtensionspecimensarenotched,precrackedbyfatigue,andtestedunderslowlyincreasingdisplacement.ThisInternationalStandarddescribesmethodscoveringtestsonspecimensnotsatisfyingrequirementsforsize-insensitivefractureproperties;namely,compactspecimensandmiddle-crackedtensionspecimensinrelativelythingauges.Methodsaregivenfordeterminingthecrackextensionresistancecurve(R-curve).PointvaluesoffracturetoughnessforcompactspecimensaredeterminedaccordingtoISO12135.Methodsfordeterminingpointvaluesoffracturetoughnessforthemiddle-crackedtensionspecimenaregiveninAnnexD.Crackextensionresistanceisdeterminedusingeitherthemultiple-specimenorsingle-specimenmethod.Themultiple-specimenmethodrequiresthateachofseveralnominallyidenticalspecimensbeloadedtoaspecifiedlevelofdisplacement.Theextentofductilecrackextensionismarkedandthespecimensarethenbrokenopentoallowmeasurementofcrackextension.Single-specimenmethodsbasedoneitherunloadingcomplianceorpotentialdroptechniquescanbeusedtomeasurecrackextension,providedtheymeetspecifiedaccuracyrequirements.Recommendationsforsingle-specimentechniquesaredescribedinISO12135.Usingeithertechnique,theobjectiveistodetermineasufficientnumberofdatapointstoadequatelydescribethecrackextensionresistancebehaviourofamaterial.Themeasurementofδ5isrelativelysimpleandwellestablished.Theδ5resultsareexpressedintermsofaresistancecurve,whichhasbeenshowntobeuniquewithinspecifiedlimitsofcrackextension.Beyondthoselimits,δ5R-curvesforcompactspecimensshowastrongspecimendependencyonspecimenwidth,whereastheδ5R-curvesformiddle-crackedtensionspecimensshowaweakdependency.CTOAismoredifficulttodetermineexperimentally.ThecriticalCTOAisexpressedintermsofaconstantvalueachievedafteracertainamountofcrackextension.TheCTOAconcepthasbeenshowntoapplytoverylargeamountsofcrackextensionandcanbeappliedbeyondthecurrentlimitsofδ5applications.Bothmeasuresofcrackextensionresistancearesuitableforstructuralassessment.Theδ5conceptiswellestablishedandcanbeappliedtostructuralintegrityproblemsbymeansofsimplecrackdrivingforceformulaefromexistingassessmentprocedures.TheCTOAconceptisgenerallymoreaccurate.Itsstructuralapplicationrequiresnumericalmethods,i.e.finiteelementanalysis.InvestigationshaveshownaverycloserelationbetweentheconceptofconstantCTOAandauniqueR-curveforbothcompactandmiddle-crackedtensionspecimensuptomaximumload.Furtherstudyisrequiredtoestablishanalyticalornumericalrelationshipsbetweentheδ5R-curveandthecriticalCTOAvalues.
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:49P.;A4
【正文语种】:英语


【英文标准名称】:Environmentaltesting-Part2-78:Tests-TestCab:Dampheat,steadystate
【原文标准名称】:环境试验.第2-78部分:试验.试验箱:湿热、稳态
【标准号】:IEC60068-2-78-2012
【标准状态】:现行
【国别】:国际
【发布日期】:2012-10
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC104
【标准类型】:()
【标准水平】:()
【中文主题词】:恒定环境;湿热试验;电气工程;环境;环境试验;热学;热处理;湿度;材料测试;潮气;蒸汽;试验类别;试验
【英文主题词】:Constantatmosphere;Damp-heattests;Electricalengineering;Environment;Environmentaltesting;Heat;Heattreatment;Humidity;Materialstesting;Moisture;Steam;Testcategories;Testing
【摘要】:
【中国标准分类号】:A21
【国际标准分类号】:19_040
【页数】:29P;A4
【正文语种】:英语