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Contenuto archiviato il 2022-12-23

Investigation of crystallographic textures and elastic and plastic anisotropy for materials with hexagonal symmetry.

Obiettivo

This research project associates mathematicians, physicists and material scientists of 5 teams in 3 countries (Russia, Germany, France). It deals with titanium and magnesium alloys, which are very important materials because they allow weight reduction in transportation vehicles (cars, trains, planes for examples) and contribute then to save energy, which enters in the sustainable growth objective. The understanding and improvement of the anisotropic mechanical properties of such alloys requires first to be able to determine the crystallographic texture with a good precision. It is the purpose of task 1 to find out the best suited experimental set-ups for X-ray and neutron diffraction as well as the best suited mathematical conditions for texture (ODF) determination. Indeed, this field of texture analysis involve questions of physics, crystallography and mathematics. Moreover the partners have a very wide spectrum of facilities for microscopic and texture studies. Significant progress in the understanding and improvement of such titanium and magnesium alloys requires also to implement the programs which allow to calculate the texture evolution during thermo-mechanical treatments as well as the mechanical properties or anisotropic behaviour during forming process. It is the objective of task 2. Such programs include necessarily assumptions or statements regarding the physical mechanisms at the microscopic levels. Therefore task 2 includes investigations, which combine microscopic studies at several levels (OM, SEM, TEM) and texture determination. The results will allow implementing the programs using the co-operation of material scientists and mathematicians used with numerical applications. The comparison of model predictions with the experimentally determined properties is then the basis of a much deeper knowledge, which in turn leads to the capability to propose ways to produce improved materials.

Argomento(i)

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Meccanismo di finanziamento

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Coordinatore

University of Metz
Contributo UE
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Indirizzo
Ile du Saulcy C
57045 Metz
Francia

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Partecipanti (4)