Development of HT-Brazing Systems for Non-Similar Material Composites

Abstract

The present article demonstrates the importance of metallography as an indispensable tool for process control as well as for establishment of basic principles for the process development based on a concrete practical example from the field of brazing of gas turbine components. This example serves to identify and prove the effects of differences in the thermal expansion behavior of non-similar materials on the braze joint by means of metallographic examinations. The knowledge acquired is used to realize braze connections of respective material composites.