6533b828fe1ef96bd1288cbf

RESEARCH PRODUCT

Early-stage detection of surface stress corrosion cracking at the subgranular level

Aurélie ClairAurélie ClairOlivier CalonneMarc FoucaultEric Finot

subject

Materials scienceMechanical EngineeringSurface stressAlloyMetallurgytechnology industry and agricultureMetals and AlloysOxideengineering.materialIntergranular corrosionequipment and suppliesCondensed Matter PhysicsCorrosionCrackingchemistry.chemical_compoundchemistryMechanics of MaterialsengineeringGeneral Materials ScienceGrain boundaryDuctility

description

The strain field at the interface between an alloy and its oxide layer has been mapped using nanopatterned gauges resistant to the environment of the primary nuclear medium. It was found that oxidation has decreased the alloy ductility, thereby enabling some grain boundary opening to be detectable from 1.8 % strain. It is shown that statistics of extreme rare events of hotspots quantify the occurrence of the local opening of intergranular cracks, and thereby the ageing process.

yearjournalcountryeditionlanguage
2014-07-01Scripta Materialia
https://doi.org/10.1016/j.scriptamat.2014.03.010