| About this Abstract |
| Meeting |
Materials Science & Technology 2011
|
| Symposium
|
Recent Advances in Structural Characterization of Materials
|
| Presentation Title |
In-Situ Analysis of Deformation and Recrystallization Mechanisms
in Magnesium Alloys
|
| Author(s) |
Carl Boehlert, Zhe Chen, Javier Llorca, Ivan Gutiérrez-Urrutia, Teresa Perez-Prado |
| On-Site Speaker (Planned) |
Carl Boehlert |
| Abstract Scope |
The deformation and recrystallization mechanisms of magnesium alloys at low strain rates have been thoroughly analyzed using conventional ex-situ techniques. It is well known that, at room temperature, basal slip and tensile twinning are the prevalent deformation mechanisms in randomly-oriented samples. In wrought textured alloys non-basal slip systems are activated when the Schmid factors corresponding to basal slip and to tensile twinning are low. At temperatures higher than 200°C the critical resolved shear stress of non-basal slip systems decreases below that of tensile twinning and thus basal and non-basal crystallographic slip prevails, irrespective of texture. In this work several magnesium alloys have been tested in-situ in the SEM at temperatures ranging from 50°C to 250°C with the aim of analyzing the local deformation mechanisms as a function of crystallographic orientation. The influence of crystallographic orientation (measured using EBSD), temperature, and strain rate on the recrystallization mechanism will also be presented. |
| Proceedings Inclusion? |
Definite: A CD-only volume |