On the Accuracy of Elastic Strain Field Measurements by Laue Microdiffraction and High-Resolution EBSD: a Cross-Validation Experiment
Article dans une revue avec comité de lecture
Author
PLANCHER, EmericPETIT, JohannMAURICE, ClaireSAINTOYANT, LucieLOISNARD, DominiqueRUPIN, N.MARIJON, Jean-BaptisteULRICH, OlivierBORNERT, MichelMICHA, Jean SébastienROBACH, OdileCASTELNAU, Olivier 
FAVIER, VéroniqueAbstract
Determining the accuracy of elastic strain measurements in plastically deformed alloys is an experimental challenge. To develop a novel cross-validation procedure, a controlled elasto-plastic strain gradient was created in a stainless steel single crystal by four point bending deformation. The corresponding elastic strain field was probed, with an intragranular spatial resolution, in-situ by Laue microdiffraction and ex-situ by High Resolution EBSD. Good agreement is found for the two independent measurements and the predictions of a mechanical model, at plastic strains below 0.5 %. The accuracy of the measurements is estimated at 3.2 × 10 − 4 .
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