Due to the development of materials structures and processes at micro and nano length-scales there is an increasing need to characterize materials in these dimensions in terms of deformation and fracture.
It is known that within small-scale dimensions the occurrence of strain gradients plays a crucial role, in particular for the deformation of metallic materials.
An efficient method to generate well defined multiaxial stress-strain fields are torsion experiments. Performed on thin wires with comparable microstructure and different diameters they allow non-restrictive studies of the influence of strain gradients on the mechanical behaviour of materials.
Within the scope of this project the mechanical behaviour of different metallic materials such as gold, copper, and aluminium under uniaxial and multiaxial load conditions will be investigated. For the experiments currently performed at room temperature (RT) a specifically developed test facility will be used.