Multi-Scale Microstructural Characterization

Abstract

Abstract A great number of applications and technical processes is limited by the materials’ maximum load bearing capacity, while the development of new materials is inextricably linked with the availability of appropriate characterization methods. This work aims to point out methods used and fields of research worked on, in the past years and currently, at the Department of Physical Metallurgy and Material Testing of the Montanuniversität Leoben. In this context, the study aims to present the use of classic metallography as well as the benefit of high-resolution characterization methods for a comprehensive understanding of the structure of metallic materials. The examples shown range from grain boundary etchings in high strength steels, atom probe measurements on automotive steels, and the use of scattering techniques to characterize intermetallic titanium aluminide alloys, up to cases of damage on galvanized structural steels. This work furthermore demonstrates the use of ab initio calculations on a high-alloy steel for the prediction of phase preferences of alloying elements.