Experimental Data on Aluminium Single Crystals Behaviour

International audienceUnderstanding polycrystal plasticity requires the comprehension of the single crystal behaviour and the elementary physical mechanisms at the origin of plastic deformation. Therefore, in this article, the results of tensile tests carried out at room temperature on two different aluminium single crystals, a 99.99 per cent purity and 99.5 per cent purity aluminium, are presented. The whole experimental procedure used to collect the data, from the production of the single crystals to the computation of the stresses and strains, is fully described. The data are presented as macroscopic, or average, and local stresses versus strain curves. The shape of the curves is discussed and compared with data from the literature. Both low-purity and high-purity single crystals do not exhibit any stage I. Discrepancies with reported data are attributed to the presence of precipitates