The operational behavior of brazed constructions in exhaust gas carrying components is significantly influenced by the corrosion fatigue behavior of the brazed joins. Within this research project, a mechanism-based characterisation of the test frequency influence on the corrosion fatigue properties of austenite joints, brazed with two nickel based filler metals, is planned. The aim is a microstructure-based understanding of the influence of the frequency- and time-dependent corrosion on the deformation and damage mechanisms. Furthermore, a damage model for an efficient characterization and prediction of the frequency- and time-dependent corrosion fatigue behavior of brazed joints in exhaust gas condensate will be developed.
Duration: 2015 until 2021