In the Adaptive Structural Materials group we develop novel experimental-theoretical tools and methodologies, and employ them to (i) understand micro-mechanisms governing macro-properties, (ii) design property-optimized novel structural alloys. [more]
Additive Manufacturing (AM) is a rapidly maturing technology capable of producing highly complex parts directly from a computer file and raw material powders. Its disruptive potential lies in its ability to manufacture customised products with individualisation, complexity and weight reduction for free. The purpose of this group is to understand the impact of this manufacturing process on the micro- and nanostructures of the employed alloys as well as to develop metallic materials suitable for and exploiting the unique characteristics of AM.
The group’s mission is the alloy design and subsequent microstructure-oriented optimization of properties of novel complex engineering steels via thermomechanical treatment [1,2-4]. This initiative requires a detailed understanding of the relations between processing and microstructure evolution on the one hand and the relations between microstructures and properties on the other. This twofold strategy is essential in this field as no direct link exists between processing and properties. Hence, material optimization can only proceed through the careful characterization and interpretation of microstructures [2,5,6].
The goal of our group is to understand the interactions of structure, composition and physical properties of biological materials in relation to their function and to develop knowledge-based concepts for new bio-inspired and biomimetic materials with tailored properties.
The group is concerned with the design of advanced structural materials along with the respective synthesis and processing routes and techniques. The focus lies on steels with superior physical and mechanical properties.
From bearings, over rails, to tooth or hip implants – the number of examples where materials are exposed to mechanical contact loads is as countless as the number of materials used under such conditions. The materials science of mechanical contacts is versatile and challenging. The loads decay with distance from the surface and with that the amount of plastic deformation. They can generate short but significant local increments in temperature.
The M&D research group is defined through two correlated tasks: on the one hand, we aim at understanding microstructure formation mechanisms and the relation between microstructures and properties of materials by investigations on the microscopic level. To this aim we develop or advance, on the other hand, microscopy and diffraction techniques. Currently the focus lies on techniques in the scanning electron microscope, in particular on the electron diffraction techniques (EBSD, 3D EBSD, XR-EBSD, ECCI). [more]
The group 'Therory and Simulation' develops constitutive models for advanced materials such as high strength steels. As the mechanical properties are of main interest crystal plasticity modelling  builds the core of the activities. For this purpose a number of constitutive models have been developed in the last 10 years. These models cover the full range from phenomenological descriptions to physics based formulations of dislocation slip and other deformation mechanisms such as twinning induced plasticity (TWIP) and displacive transformations (TRIP). To facilitate the implementation of the models the Düsseldorf Advanced MAterial Simulation Kit (DAMASK, ) has been developed.