Thumbnail Image
🇬🇧

On the low-cycle fatigue behavior of thermo-mechanically processed high-strength aluminum alloys

Sajadifar, Seyed Vahid
Scharifi, Emad
Wegener, Thomas
Krochmal, Marcel
Lotz, Steffen
Steinhoff, Kurt
Niendorf, Thomas

In the present work low-cycle fatigue experiments were carried out on thermo-mechanically processed AA6082 and AA7075 sheets to evaluate mechanical properties under cyclic loading. Different cooling rates imposed by use of tempered forming tools after solutionizing and subsequent aging treatment led to the formation of precipitates with differing sizes and morphologies. Specimens thermo-mechanically processed in tools with temperatures of 24 °C and 200 °C showed superior mechanical properties under both monotonic and cyclic loading. Different behavior was observed for the specimens formed in the tool with a temperature of 350 °C. Based on thorough analysis of prevalent microstructural features, processing-property-damage relationships are established pointing at the major impact of the thermal history on the final performance of the high-strength aluminum alloys in focus.

Description
© This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Citation
In: International Journal of Fatigue Volume 156 / (2021) , S. ; eissn:1879-3452
Collections
Rights

Creative Commons license

Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwised noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International
@article{doi:10.17170/kobra-202312229282,
  author    ={Sajadifar, Seyed Vahid and Scharifi, Emad and Wegener, Thomas and Krochmal, Marcel and Lotz, Steffen and Steinhoff, Kurt and Niendorf, Thomas},
  title    ={On the low-cycle fatigue behavior of thermo-mechanically processed high-strength aluminum alloys},
  keywords ={600 and 620 and Aluminiumlegierung and Ermüdung bei niedrigen Lastspielzahlen and Thermomechanische Behandlung and Mechanische Eigenschaft and Mikrostruktur and Bruch and Materialermüdung},
  copyright  ={http://creativecommons.org/licenses/by-nc-nd/4.0/},
  language ={en},
  journal  ={International Journal of Fatigue},
  year   ={2021}
}