Project Details
Projekt
Coordination Funds
Applicant
Professor Dr.-Ing. Lothar Wondraczek
Subject Area
Mechanical Properties of Metallic Materials and their Microstructural Origins
Term
from 2012 to 2020
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 221712051
Accepting brittleness and benefiting from their optical properties and universal processability, glassy materials have found their traditional applications in environments with low levels of tensile stress. It was recognized, however, that intrinsically, glasses represent the strongest man-made material which can be produced on large-scale. Only for low resistance to surface damage, the uniquely high levels of intrinsic strength can presently not be made use of. In a broader context, covering all classes of disordered materials (distinguished by the nature of chemical bonds), brittleness, stiffness, elastic limit and the practical absence of ductility originate from their molecular, mid-range and surface topology. In inorganic as well as metallic glasses and in contrast to any other solid material, mechanical properties must be considered in a twofold way: on the basis of structural length scales and dynamics. Identification of determinant topological and density constraints and their engineering towards ultrahigh toughness is now seen as the major future breakthrough of the field. As to yet disregarded synergy arises from the joint treatment of both classes of glass: from a topo-mechanical view, both materials appear to follow the same constitutive principles of coordination, packing density, free volume, structural dynamics, structural heterogeneity and extreme mid- to long-range homogeneity. SPP 1594 has the objective to condense existing experimental and theoretical competencies within Germany to enable a conceptual breakthrough in the understanding and design of the mechanical properties of glasses. For the first time, inorganic and metallic glasses will be considered in a joint context. An anticipated number of 12-15 highly cross-disciplinary research projects will be involved in SPP 1594. Key to topical success, international visibly and long-lasting impact is the effective coordination of this effort for which a number of central activities are planned, including the organization of national and international workshops and conferences, the promotion of young researchers, equal opportunity actions, setting-up a mentoring program and ensuring high-impact outreach and networking.
DFG Programme
Priority Programmes
