Designation:E2714−13StandardTestMethodforCreep-FatigueTesting1ThisstandardisissuedunderthefixeddesignationE2714;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofmechanicalpropertiespertainingtocreep-fatiguedeformationorcrackformationinnominallyhomogeneousmaterials,orbothbytheuseoftestspecimenssubjectedtouniaxialforcesunderisothermalconditions.Itconcernsfatiguetestingatstrainratesorwithcyclesinvolvingsufficientlylongholdtimestoberesponsibleforthecyclicdeformationresponseandcyclestocrackformationtobeaffectedbycreep(andoxidation).Itisintendedasatestmethodforfatiguetestingperformedinsupportofsuchactivitiesasmaterialsresearchanddevelopment,mechanicaldesign,processandqualitycontrol,productperformance,andfailureanalysis.Thecycliccondi-tionsresponsibleforcreep-fatiguedeformationandcrackingvarywithmaterialandwithtemperatureforagivenmaterial.1.2Theuseofthistestmethodislimitedtospecimensanddoesnotcovertestingoffull-scalecomponents,structures,orconsumerproducts.1.3Thistestmethodisprimarilyaimedatprovidingthematerialpropertiesrequiredforassessmentofdefect-freeengineeringstructurescontainingfeaturesthataresubjecttocyclicloadingattemperaturesthataresufficientlyhightocausecreepdeformation.1.4Thistestmethodisapplicabletothedeterminationofdeformationandcrackformationornucleationpropertiesasaconsequenceofeitherconstant-amplitudestrain-controlledtestsorconstant-amplitudeforce-controlledtests.Itisprimar-ilyconcernedwiththetestingofroundbartestspecimenssubjectedtouniaxialloadingineitherforceorstraincontrol.Thefocusoftheprocedureisontestsinwhichcreepandfatiguedeformationanddamageisgeneratedsimultaneouslywithinagivencycle.Itdoesnotcoverblockcycletestinginwhichcreepandfatiguedamageisgeneratedsequentially.Datathatmaybedeterminedfromcree...
