Determining Ti-17 β-phase Single-Crystal Elasticity Constants through X-Ray Diffraction and inverse scale transition model

被引：13

作者：

Freour, Sylvain ^{[1
]}

Lacoste, Emmanuel ^{[1
]}

Francois, Manuel ^{[2
]}

Guillen, Ronald ^{[1
]}

机构：

[1] Univ Nantes, Inst Rech Genie Civil & Mecan, CNRS, GeM,UMR 6183, 37 Blvd Univ,BP 402, F-44600 St Nazaire, France

[2] Univ Technol Troyes, Charles Delaunay Inst, CNRS UMR 6279, LASMIS, F-10010 Troyes, France

来源：

RESIDUAL STRESSES VIII | 2011年 / 681卷

关键词：

Single-Crystal Elasticity Constants; X-ray Elasticity Constants; multiphase materials; morphologic texture; in situ analysis; multiscale modelling and scale bridging aspects; MECHANICAL-PROPERTIES; APPROXIMATION; COEFFICIENTS; COMPOSITES; EXTENSION;

D O I：

10.4028/www.scientific.net/MSF.681.97

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The scope of this work is the determination of single-crystals elastic constants (SEC) from X-ray diffraction lattice strains measurements performed on multi-phase polycrystals submitted to mechanical load through a bending device. An explicit three scales inverse self-consistent model is developed in order to express the SEC of a cubic phase, embedded in a multiphase polycrystal, as a function of its X-ray Elasticity Constants. Finally, it is applied to a two-phases (alpha+beta) titanium based alloy (Ti-17), in order to estimate Ti-17 beta-phase unknown SEC. The purpose of the present work is to account the proper microstructure of the material. In particular, the morphologic texture of Ti-17 alpha-phase, i.e. the relative disorientation of the needle-shaped grains constituting this phase, is considered owing to the so-called Generalized Self-Consistent model.

引用

页码：97 / +

页数：2