Title of article
Creep-fatiguebehaviourofanAISIstainlesssteelat550°COriginalResearchArticle
Author/Authors
M.Sauzay، نويسنده , , M.Mottot، نويسنده , , L.Allais، نويسنده , , M.Noblecourt، نويسنده , , I.Monnet، نويسنده , , J.Périnet، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
18
From page
219
To page
236
Abstract
Inthepast,alotofexperimentalstudieshavebeendevotedtocreep-fatigueinteractionsinausteniticstainlesssteels.Testshavebeencarriedmainlyattemperaturesofatleast600°Candathighappliedstrains,whicharesupposedtobethemostdamaging.Thepresentworkisdedicatedtomechanicaltests,TEMobservationsandlifetimepredictionsat550°CwhichcorrespondstotherealindustrialtemperatureinLiquidMetalFastBreederReactors.Itisshownthatifpurefatiguetestresultsareclosetothoseperformedat600°C,someofthecreep-fatigueresultsaredifferent,particularlyforsmallappliedstrainswhichcorrespondoncemoretotheindustrialconditions.Inthe0.25–0.3%strainamplituderange,thestressislargerwithholdtimethanwithoutwhateveristheholdtimeupto5h.Thenumbersofcyclestofailurearegreatlyreducedandnosaturationwiththeholdtimeisobserved,contrarytohighertemperatureresults.Thestress–strainbehaviourisdiscussedconsideringseveralhightemperaturemechanismssuchasageing,recoveryandviscoplasticityandusingTEMobservationsandstresspartitioningintokinematic,isotropicandthermalstresses.Finally,asimplelineardamageaccumulationmodelisappliedtothe550°Cand600°Ctests,usingthemeasuredstresses.Thestressdependenceonholdtimecanpartlyexplaintheobservedfailureresultsonfatiguelife.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2004
Journal title
Nuclear Engineering and Design Eslah
Record number
894791
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