Online Lecture by dr. Erik Offerman

Some attempts to better understand the phenomenon of solid-state nucleation in steel

Delft University of Technology, Department of Materials Science & Engineering, Delft, The Netherlands

Title:
Some attempts to better understand the phenomenon of solid-state nucleation in steel

Abstract:
Nucleation in the solid-state is an important phenomenon in the science and engineering of metals. The nucleation stage determines to large extend the evolution of the metallic microstructure during solid-state phase transformations, recrystallization and precipitation. In turn, the final microstructure has a large influence on the mechanical properties of metals, which makes nucleation of technological importance.

Despite many scientific investigations, the phenomenon of solid-state nucleation is not yet fully understood. It remains challenging to predict the nucleation rate during thermo-mechanical processing of steel and to experimentally capture the nucleation phenomenon in the solid-state.

This lecture presents experimental observations of ferrite, austenite and precipitate formation in steel with the aim to better understand the nucleation phenomenon in the solid-state. Some thoughts on the role of special crystallographic orientation relationships between parent and product phases, deformation, composition and temperature during nucleation in the solid-state will be discussed.

This session will be chaired by prof. Roumen Petrov (Ghent University, Belgium).

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