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Direct measurement of local constitutive relations, at the micrometre scale, in bulk metallic alloys.
- Source :
-
Journal of Applied Crystallography . Jun2017, Vol. 50 Issue 3, p940-948. 8p. - Publication Year :
- 2017
-
Abstract
- Multiscale models involving crystal plasticity are essential to predict the elastoplastic behavior of structural materials with respect to their microstructure. However, those models are often limited by a poor knowledge of the local constitutive behavior. This article reports a method to measure the mechanical behavior directly, at the micrometre scale, in bulk crystalline materials. Local strain and stress states were evaluated at the surface of a bent stainless steel crystal by combining total strain measurements - performed with the digital image correlation technique on optical images - with elastic strain measurements obtained by Laue microdiffraction. A local constitutive relation was measured, in an efficient nondestructive way, without the need for full-field simulations. The method was validated by a comparison between the measured local behavior and the macroscopic behavior of the single crystal. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218898
- Volume :
- 50
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Crystallography
- Publication Type :
- Academic Journal
- Accession number :
- 123411654
- Full Text :
- https://doi.org/10.1107/S1600576717006185