Version 1
: Received: 30 October 2024 / Approved: 31 October 2024 / Online: 31 October 2024 (15:06:00 CET)
How to cite:
Chen, X.; Zheng, X.; Pan, M.; Liu, Y.; Kong, Y.; Hartmaier, A.; Li, L.; Du, Y. Effect of Precipitation-Free Zone on Fatigue Properties in Age-Strengthened Aluminum Alloys: Crystal Plasticity Finite Element Analysis. Preprints2024, 2024102572. https://doi.org/10.20944/preprints202410.2572.v1
Chen, X.; Zheng, X.; Pan, M.; Liu, Y.; Kong, Y.; Hartmaier, A.; Li, L.; Du, Y. Effect of Precipitation-Free Zone on Fatigue Properties in Age-Strengthened Aluminum Alloys: Crystal Plasticity Finite Element Analysis. Preprints 2024, 2024102572. https://doi.org/10.20944/preprints202410.2572.v1
Chen, X.; Zheng, X.; Pan, M.; Liu, Y.; Kong, Y.; Hartmaier, A.; Li, L.; Du, Y. Effect of Precipitation-Free Zone on Fatigue Properties in Age-Strengthened Aluminum Alloys: Crystal Plasticity Finite Element Analysis. Preprints2024, 2024102572. https://doi.org/10.20944/preprints202410.2572.v1
APA Style
Chen, X., Zheng, X., Pan, M., Liu, Y., Kong, Y., Hartmaier, A., Li, L., & Du, Y. (2024). Effect of Precipitation-Free Zone on Fatigue Properties in Age-Strengthened Aluminum Alloys: Crystal Plasticity Finite Element Analysis. Preprints. https://doi.org/10.20944/preprints202410.2572.v1
Chicago/Turabian Style
Chen, X., Liya Li and Yong Du. 2024 "Effect of Precipitation-Free Zone on Fatigue Properties in Age-Strengthened Aluminum Alloys: Crystal Plasticity Finite Element Analysis" Preprints. https://doi.org/10.20944/preprints202410.2572.v1
Abstract
Age-strengthened aluminum alloys as important structural lightweight materials have much lower fatigue properties than conventional steel. This study focuses on the effect of the precipitation-free zone (PFZ) on the mechanical properties of age-strengthened aluminum alloys. A polycrystalline model containing PFZ was created by secondary development of the traditional polycrystalline model and combined with the crystal plasticity finite element method to simulate the stress-strain response and local plastic deformation behaviors under different microstructures. The presence of PFZ significantly reduces the yield strength of the alloy and concentrates the stresses in the PFZ region, especially under cyclic loading, and the strain energy dissipation in the PFZ region is significantly higher than that in the intracrystalline region, and far exceeds that without the precipitation zone. region and far exceeds the model without PFZ, indicating that PFZ is the main region for fatigue crack initiation. In addition, the introduction of a rotation factor to simulate the inhomogeneous rotation within the grain reveals that the additional stress concentration in the PFZ introduced by the aluminum alloy forming process further increases the fatigue crack initiation driving force.
Chemistry and Materials Science, Materials Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
