Title of article :
EffectsofoxideandhydrogenonthecircumferentialmechanicalpropertiesofZircaloy-4claddingOriginalResearchArticle
Author/Authors :
JunHwanKim، نويسنده , , MyoungHoLee، نويسنده , , ByoungKwonChoi، نويسنده , , YongHwanJeong، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Abstract :
MechanicalpropertiesofZircaloy-4claddingwereevaluatedbytheringtensiontesttosimulatethecladdingbehaviorunderthereactivity-initiatedaccident(RIA)inahighburnupenvironment.Zircaloy-4claddingwascontrolledtohaveahydrogencontentupto1000ppmandaoxidethicknessupto100μm,followedbyacircumferentialringtensiontestwithastrainrateintherangeof0.01and1/s.Theresultsshowedthatboththeductilityandtoughnessdecreasedasthehydrogencontentandtheoxidethicknessincreased.Hydrideinsidethecladdingplayedanimportantroleinthebrittlefailuremechanismbyadecohesionbetweenthehydrideandthemetalmatrixaswellasapreferentialfractureofthebrittlehydride.Surfaceoxidealsoaffectedthemechanicalpropertysuchasareductionoftheloadbearingarea,stressrelievingeffect,andsoon.Correlationbetweenthein-reactorRIAparameterssuchasthefuelenthalpyandout-reactormechanicaltoughnesswaspostulatedanditwasconcludedthatthechangeofthemechanicaltoughnesscausedbytheoxidewasmoresignificantthanthatbythehydrogen.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
