Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1601701 | Intermetallics | 2007 | 5 Pages |
Abstract
We have determined the macroscopic plastic deformation behaviour of high-quality single-crystalline samples of the complex metallic alloy β-Al–Mg. Uniaxial deformation experiments at a constant strain rate of 10−4 s−1 were performed at temperatures between 200 and 375 °C. The material exhibits ductile behaviour down to temperatures of 225 °C. At this temperature an upper yield stress of 780 MPa was observed, which is a very high value compared to commercial Al–Mg alloys. The upper yield point is followed by an almost constant flow stress level up to strains of about 6%. Stress-relaxation tests and temperature changes were carried out in order to determine the thermodynamic activation parameters of the deformation process.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Stefan Roitsch, Marc Heggen, Marta Lipińska-Chwałek, Michael Feuerbacher,