Microstructural Influences Caused by Different Aging Strategies on the Strain-Dependent Damping of the High-Strength Aluminum Alloy AA7075
- The present study focused on the influence of different aging conditions on the strain-dependent damping of the high-strength aluminum alloy AA7075. For this purpose, different artificial aging strategies were carried out after solution heat treatment with subsequent water quenching to identify correlations between microstructural evolution, hardness development, and individual material damping. The resulting material damping was measured using an experimental setup based on the principle of electromagnetic feedback. Scanning transmission electron microscopy (STEM) investigations were carried out using a scanning electron microscope (SEM) to characterize the material’s microstructure. Depending on the aging conditions, the damping investigations revealed specific characteristic behaviors in the strain-dependent range from 1 × 10−7 to 0.002. Peak aging conditions showed lower damping than the overaged conditions but resulted in the highest hardness. The hardness decreased with increasing aging time or temperature.
| Author: | Steffen Lotz, Jiali Zhang, Emad Scharifi, Roland Morak, Ursula Weidig, Jürgen Göken, Christoph Broeckmann, Kurt Steinhoff |
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| DOI: | https://doi.org/10.3390/met12122172 |
| Parent Title (English): | Metals |
| Document Type: | Article |
| Language: | English |
| Year of Completion: | 2022 |
| Release Date: | 2025/03/07 |
| Tag: | Precipitation Hardening; Strain-Dependent Damping High Strength Aluminium Alloys |
| Volume: | 12 |
| Issue: | 12 |
| Article Number: | 2172 |
| Pagenumber: | 7 |
| First Page: | 1 |
| Last Page: | 7 |
| Institute: | Fachbereich Seefahrt und Maritime Wissenschaften |
| Research Focus Area: | Nachhaltige Technologien und Prozesse |