About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
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Symposium
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12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
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Presentation Title |
Fatigue Characterization and Modelling of Forged AZ80 and ZK60 Magnesium |
Author(s) |
Andrew Gryguc, Seyed Behzad Behravesh, Hamid Jahed, Mary Wells, Bruce Williams, Xuming Su |
On-Site Speaker (Planned) |
Andrew Gryguc |
Abstract Scope |
The mechanical and fatigue properties of two commercially available Mg alloys (AZ80/ZK60) were investigated following a comprehensive forging development process to produce near-net-shape structural components. Characterization of the tension/compression and shear responses were done for a variety of different forging conditions to understand the structure-property relationship and optimize the key forging process parameters. The multiaxial fatigue response of the forged alloys were characterized, including the effects of phase angle and proportionality of the loading. The effects of the materials yield asymmetry and anisotropy in its cyclic behaviour was investigated in detail and phenomenologically linked to damage mechanisms. Strain, stress and variable amplitude fatigue experiments were carried out and energy based predictive models proved to provide a reliable life prediction for the forged Mg alloys. Full scale forging was successfully completed for both alloys producing defect free components with favourable properties that achieved a mass savings of 37% over the baseline. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |