Author/Authors :
YukioTachibana، نويسنده , , TatsuoIyoku، نويسنده ,
Abstract :
nthehightemperatureengineeringtestreactor(HTTR),evenatnormaloperationtheservicetemperaturesofclass1metalliccomponentsreachtemperaturesabove900°Cwhenexposedtoprimaryheliumcoolantof950°C.Forthesecomponents,HastelloyXR,whichistheimprovedversionofHastelloyX,wasdevelopedandusedforhightemperatureapplication.
Someofthehightemperaturematerialsandtheirservicetemperatures,includingHastelloyXR,usedfortheclass1andreactorinternalmetalliccomponentsoftheHTTRareverywellbeyondthewell-establishedJapaneseelevatedtemperaturestructuraldesignguideline.Moreover,atveryhightemperatures,wherecreepdeformationissignificant,thecomponentdesignbasedonelasticanalysisisimpossible.Therefore,manyresearchworksonstructuralmechanicsbehaviorwerecarriedouttoestablishahightemperaturestructuraldesignguidelineandcreepanalysismethods.ThispaperreviewsstructuraldesignofthehightemperaturecomponentsfortheHTTRmadeofHastelloyXR,21/4Cr–1Mosteel,austeniticstainlesssteelsSUS321TBandSUS316,and1Cr–0.5Mo–Vsteel.
