On the Accuracy of Elastic Strain Field Measurements by Laue Microdiffraction and High-Resolution EBSD: a Cross-Validation Experiment

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 corre...

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Bibliographic Details
Published in:Experimental mechanics 2016-03, Vol.56 (3), p.483-492
Main Authors: Plancher, E., Petit, J., Maurice, C., Favier, V., Saintoyant, L., Loisnard, D., Rupin, N., Marijon, J.-B., Ulrich, O., Bornert, M., Micha, J.-S., Robach, O., Castelnau, O.
Format: Article
Language:English
Subjects:
Biomedical Engineering and Bioengineering
Characterization and Evaluation of Materials
Control
Dynamical Systems
Engineering
Engineering Sciences
Lasers
Optical Devices
Optics
Photonics
Solid Mechanics
Vibration
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Summary: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 .
ISSN:0014-4851
1741-2765
DOI:10.1007/s11340-015-0114-1