Research
Research focus
The Department of Granularity of Structural Information in Materials Engineering (GWS) at the University of Kassel is at the forefront of developing high performance metallic materials through a deep understanding of the relationship between process, microstructure and properties. Our research uses multiscale characterization techniques to develop materials from the micrometer to the atomic scale, with a focus on improving mechanical properties, durability and sustainability for various industrial applications.
A central pillar of our work is the development of sustainable metallic materials that aim to minimize environmental impact through improved recyclability, reduced energy consumption and extended lifetime. In addition, we are pioneering research into hydrogen embrittlement, a critical challenge for the hydrogen energy industry, to create hydrogen-resistant metallic materials. These efforts are critical to the safe adoption of hydrogen as a clean energy carrier and are in line with our commitment to contribute to a sustainable energy future.
By integrating advances in sustainable materials and addressing key challenges in hydrogen energy applications, our GWS is dedicated to providing innovative materials for a more sustainable world.
Research area
The research group specializes in developing nanostructured metallic materials by combining simulation tools and experimental approaches. Dedicated to advancing materials development, the focus is on achieving superior mechanical properties while reducing manufacturing costs and gas emissions. Through systematic studies of the process-microstructure-property relationship at multiple scales, the group aims to push the boundaries of material engineering to meet the evolving demands of modern technology and industry. The primary aim is on engineering materials at the micro and nanoscale, resulting in significant improvements in strength, durability, and formability, paving the way for both current and next-generation applications.
Selected publications:
[1] W. Song: Nano-Engineering of High Strength Steels. Nature Springer, 2024.
The research group is dedicated to using sophisticated nano-characterization technology to investigate the structural information of atomic structures and local chemistry, which is essential to ultimately understand its contribution to physical properties. Our employed techniques such as synchrotron radiation, neutron scattering, and positron annihilation spectroscopy offer unparalleled precision in probing the atomic structures and dynamics of nanostructure evolution. Atom probe tomography (APT) allows for three-dimensional compositional mapping at the atomic scale, enabling detailed analysis of elemental distributions and their effects on material properties. Transmission electron microscopy (TEM) and high-resolution TEM (HR TEM) provide high-magnification imaging and atomic-level resolution, respectively, allowing to visualize defects, phase boundaries, and crystallographic structures etc. These advanced characterization techniques collectively contribute to the design and development of materials with superior performance, tailored for specific applications in modern technology and industry.
Selected publications:
The research focus lies in investigating the mechanisms and impact of hydrogen embrittlement on metallic materials, a critical issue affecting the reliability and durability of infrastructure and high-performance metallic materials. Hydrogen embrittlement leads to premature brittleness and fractures, posing significant risks to pipelines, hydrogen infrastructures, aerospace components etc. By employing advanced characterization and modelling techniques, we aim to understand and mitigate the effects of hydrogen on metallic materials through novel micro-/nanostructural design. Addressing the material challenges posed by hydrogen embrittlement is essential for the sustainable and safe deployment of hydrogen technologies for various industrial applications.
Selected publications:
Our research mission is to advance the development and implementation of sustainable metallic materials that meet the increasing demands for environmental responsibility and resource efficiency. In the face of global challenges, e.g., climate change and resource depletion, our research focuses on developing metallic materials with superior performance, reduced environmental impact, and enhanced recyclability. By employing simulation-based alloy design, green manufacturing processes, and life-cycle analysis, we aim to minimize the ecological footprint and strategic-critical element dependence of metallic materials.
Selected publications:
[1] U. Krupp, A. Gramlich, T. Hinrichs, W. Song, H. Springer: Cu-Tolerant High-Strength Steels for a Circular Economy. Conference: Materials Science and Engineering (MSE) Congress 2022.