7,021 views
In this video we look at the formation of a metal structure during cooling from the melt. This consists of many individual grains and grain boundaries. We discuss the conditions that lead to the crystallization of a melt. These solidification conditions are, on the one hand, supercooling and, on the other hand, the presence of nuclei. This then results in specific options for influencing the structure formation. We explain why a fine-grained structure of metals often offers many advantages. 00:00 Structure 01:11 Crystallization 03:25 Solidification conditions 06:49 Influencing the structure formation 08:56 Heat of crystallization