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Experimental Mechanics
Erschienen in: Experimental Mechanics 4/2015

01.04.2015

Microplasticity in Polycrystals: A Thermomechanical Experimental Perspective

verfasst von: E. Charkaluk, R. Seghir, L. Bodelot, J.-F. Witz, P. Dufrénoy

Erschienen in: Experimental Mechanics | Ausgabe 4/2015

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Abstract

In this paper, thermomechanical couplings at the grain scale in metallic polycrystals are studied during the deformation process through an original experimental setup and improved calibration tools and full-field treatments. In order to perform intragranular thermomechanical analysis in a metallic polycrystal at the grain scale, a crystallography-based technique for the projection of the temperature and displacement fields on a polynomial basis is proposed. It enables intragranular coupled analysis of strain and temperature full-field data. Macroscopic, mesoscopic and granular analysis are then conducted and it is shown that the determination of a macroscopic yield stress as well as a critical resolved shear stress in grains is possible. Early local microplastic activity is therefore thermomechanically confirmed.
Vorheriger Artikel POD Preprocessing of IR Thermal Data to Assess Heat Source Distributions
Nächster Artikel Determination of the Energy Storage Rate Distribution in the Area of Strain Localization Using Infrared and Visible Imaging

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Fußnoten
1
HAGBs total length in the central area = 62.86 cm - Σ3 GBs length = 36.36 cm
 
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Metadaten
Titel
Microplasticity in Polycrystals: A Thermomechanical Experimental Perspective
verfasst von
E. Charkaluk
R. Seghir
L. Bodelot
J.-F. Witz
P. Dufrénoy
Publikationsdatum
01.04.2015
Verlag
Springer US
Erschienen in
Experimental Mechanics / Ausgabe 4/2015
Print ISSN: 0014-4851
Elektronische ISSN: 1741-2765
DOI
https://doi.org/10.1007/s11340-014-9921-z

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