Article | REF: M3042 V1

Texture and anisotropy of polycrystalline materials Properties of textured materials

Author: Claude ESLING

Publication date: September 10, 2017

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ABSTRACT

Industrial polycrystalline materials have a crystallographic texture. This article looks at the properties of polycrystalline materials as averages over monocrystalline materials, calculated with the texture function. For elasticity, it describes the models of Voigt, Reuss and Hill and for plasticity, the classical model of Taylor in the full constraint version, which assumes that the local plastic deformation is equal to the average plastic deformation. Improvements by partial relaxation of this condition, i.e. relaxed constraints, are mentioned. The application of the simulation of deformation textures to predicting the behavior of sheet metal in deep drawing is illustrated.

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AUTHOR

Claude ESLING: Professor Emeritus at the University of Lorraine - Laboratoire d'Étude des Microstructures et de Mécanique des Matériaux & Laboratoire d'Excellence DAMAS, Université de Lorraine, Metz, France

INTRODUCTION

This article completes a series of three devoted to crystallographic textures in polycrystalline materials. After the article on techniques and methods for describing textures [M 3 040] , the one on the mechanisms of texture formation [M 3 041] , this one aims to study the properties of materials possessing crystallographic texture. Texture, along with other structural parameters such as grain boundaries, can strongly inﬂuence the properties of polycrystalline materials. In fact, material properties depend on multiple parameters, such as crystal structure, phase chemistry, crystal orientation and lattice defects. This article deals only with the inﬂuence of crystalline orientation on material properties, i.e. the effect due to texture and high-order textural quantities, the other possible inﬂuences being taken for granted. Crystalline orientation inﬂuences material properties via crystalline anisotropy: dependence of properties on crystallographic direction. Manufacturers are particularly interested in the mechanical properties that determine behavior during forming and serviceability. However, the properties of polycrystalline materials are not the simple arithmetic averages of the properties of single crystals. Single-crystal grains, which are the elementary constituents of the material, are not independent of each other, but rather correlated by the polycrystalline edifice as a whole. The average physical property includes all influences related to the structure of the polycrystalline edifice.

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KEYWORDS

crystallographic texture | mean physical properties | elastic anisotropy | polycristalline plasticity

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Texture and anisotropy of polycrystalline materials

Macroscopic anisotropy

Bibliography

(1) - BUNGE (H.J.) - Texture analysis in materials science. - Mathematical Methods (1982). Butterworth London, 593 p., 2 ^nd Ed., Cuvillier-Verlag Göttingen (1993).
(2) - BUNGE (H.J.), ESLING (C.) (Eds) - Quantitative...

Software tools

DAHLEM-KLEIN (E.), KLEIN (H.) and PARK (N.J.). 1 avenue system: ODF Analysis, Cuvillier-Verlag Göttingen, 109 p. (1993).

PARK (N.J.), KLEIN (H.) and DAHLEM-KLEIN (E.). 1 avenue system: physical properties of textured materials. Cuvillier-Verlag Göttingen, 150 p. (1993).

SCHAEBEN et al. A MATLAB Toolbox for Quantitative Texture Analysis, developed by H. SCHAEBEN et al, TU...

Websites

LAGAMINE: finite element code initially developed for numerical modeling of large stresses, mechanical problems with large displacements and contact problems.

http://www.facsa.ulg.ac.be/cms/c_1584539/fr/lagamine

Duchene, L. (2003): Finite element study of sheet metal with a local description based...

Events

ICOTOM symposia: International Conference on Textures of Materials and Proceedings of ICOTOM symposia.

ITAP symposia: International Conference on Texture and Anisotropy of Polycrystals and ITAP symposia proceedings.

The SFMM and DGM Texture and Anisotropy thematic commissions organize an annual Franco-German colloquium (de facto European with regular participation of Belgian, Dutch...

Standards and norms

Analyse par microfaisceaux : Lignes directrices pour la mesure d'orientation par diffraction d'électrons rétrodiffusés. Fournit des recommandations sur la façon de produire des mesures d'orientation cristallographique fiables et reproductibles en utilisant la diffraction d'électrons rétrodiffusés (EBSD). Conditions de préparation des échantillons, la configuration de l'instrument, l'étalonnage et l'acquisition des données....