| About this Abstract |
| Meeting |
2019 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys, Processing and Characterization
|
| Presentation Title |
Advanced Characterization of the Cyclic Deformation and Damage Behavior in Al-Si-Mg Cast Alloys using Hysteresis Analysis and Alternating Current Potential Drop Method |
| Author(s) |
Jochen Tenkamp, Kevin Bleicher, Sven Klute, Karin Chrzan, Alexander Koch, Frank Walther |
| On-Site Speaker (Planned) |
Jochen Tenkamp |
| Abstract Scope |
The steady demand for lightweight and fatigue-resistant solutions in automotive and aerospace industries requires the extensive use of light metals like advanced aluminum cast alloys. To ensure a safe design for critical components, fatigue tests in the LCF and HCF regime from 1E2 to 1E7 cycles and crack propagation tests were performed with different heat-treated samples of the aluminum cast alloy AlSi7Mg0.3 to investigate the effect of Al solid solution, Si eutectic morphology and remnant porosity on the cyclic deformation, crack initiation and propagation behavior. The number of cycles for fatigue crack initiation and the location were determined by means of correlated hysteresis, resistometric and fractographic investigations by scanning electron microscopy (SEM) and micro-computed tomography (CT). Based on intermitted CT analyses during fatigue testing, the change in mechanical hysteresis and electrical resistance could be correlated to surface and internal crack initiation as well as crack propagation and coalescence until failure. |
| Proceedings Inclusion? |
Planned: Light Metals |