Interpretation of Diffraction Data from In Situ Stress Measurements during Biaxial Sheet Metal Forming
| Autor: | Timothy J. Foecke, Lin Hu, Adam A. Creuziger, Mark A. Iadicola, Thomas Gnäupel-Herold |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Diffraction
Materials science Mechanical Engineering In situ stress Intergranular corrosion Plasticity Condensed Matter Physics Hybrid approach Lattice strain Crystallography Mechanics of Materials visual_art Lattice (order) visual_art.visual_art_medium General Materials Science Composite material Sheet metal |
| Zdroj: | Materials Science Forum. :441-448 |
| ISSN: | 1662-9752 |
| Popis: | Biaxial yield behavior is determined in-situ through X-ray lattice strain measurements. The distributions of d-spacings in different sample directions is affected both by the changes in diffraction elastic constants (DEC) from evolving texture and by the intergranular (IG) strains. Model predictions were found to be lacking, thus, a hybrid approach was developed based on measurements of DEC and IG strains at selected biaxial deformations. In order to convert measured lattice strains to stress for any given biaxial plastic strain a theoretical approximation was fitted to the experimental data, thus allowing the estimation of the evolution of DEC and IG strains with plastic deformation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|