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Lifetime assessment of aging materials

: Hartrott, P. von; Metzger, M.; Rockenhäuser, C.; Skrotzki, B.


MTZ worldwide 79 (2018), Nr.10, S.64-69
ISSN: 2192-9114
Bundesministerium fur Wirtschaft und Energie BMWi (Deutschland)
IGF; 17734 N
Fraunhofer IWM ()
aluminum alloy EN AW-2618A; fatigue; load collectives

Materials subjected to high-temperature service conditions will change their microstructure with time. Associated with this aging process is a change of mechanical properties as well as a change of damage mechanisms. Within the scope of the FVV project Aging and Lifetime, Fraunhofer IWM in Freiburg and BAM in Berlin (both Germany) experimentally characterized the widespread high-temperature aluminum alloy EN AW-2618A in different over aging states. Based on the experimental findings, models for numerical lifetime assessment with the finite-element method were implemented.