Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A
Source abstract
Abstract
The aluminum alloy EN AW‐2618A is a high‐strength, precipitation‐hardened material developed for applications at elevated temperatures. In service, components such as radial compressor wheels and pistons are exposed to thermal conditions that cause microstructural overaging, leading to mechanical softening. With future exhaust gas turbochargers expected to operate at temperatures up to 230°C and with increasing demands for efficiency and compression ratio, reliable data on fatigue behavior under these conditions is essential but currently lacking. This study aims to close this gap by conducting fully reversed ( R = −1) high‐cycle fatigue (HCF) tests at room temperature and at 230°C on specimens in an overaged condition (1000 h at 230°C), simulating the degradation that occurs in service due to the coarsening of the strengthening S‐phase. Additionally, the influence of test frequency on fatigue performance is investigated.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fatigue and fracture mechanics · High Temperature Alloys and Creep · Mechanical Failure Analysis and Simulation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Federal Institute for Materials Research and Testing (BAM) Berlin Germany
Fraunhofer‐Institut für Werkstoffmechanik IWM Freiburg Germany
Funding
Bundesministerium für Wirtschaft und Klimaschutz
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