Development of hybrid material composites for marine diesel engine components with high thermal loads
Entwicklung von hybriden Werkstoffverbunden für thermisch hochbelastete Bauteile in Schiffsdieselmotoren
Innovative hybrid material composites are produced which resist the high thermal and mechanical loads in the combustion chamber. The complete process chain, starting with joining and including forming and heat treatment, has to be adjusted to the material composite in order to obtain components that meet the high requirements for quality and safety in shipping. First of all various joining processes were investigated to achieve an ideal deposition of the additional material. Various nickel-based alloys were analyzed and tested in experiments using welding and forming processes. The forming process is optimized using special heating strategies and shall be adequate for later industrial applications. After forming, the components are subjected to an adapted heat treatment in order to specifically adjust the desired material characteristics. Furthermore, special test methods for material testing are applied to characterize the properties of the processed material composites. In this context the focus lies on the bonding zone between the base steel material and additional various nickelbased superalloys.