In situ 3D characterization of high temperature fatigue damage mechanisms in a cast aluminum alloy using synchrotron X-ray tomography

In situ 3D characterization of high temperature fatigue damage mechanisms in a cast aluminum alloy using synchrotron X-ray tomography

Fatigue tests were performed at 250°C on a cast AlSi7Cu3Mg aluminum alloy and monitored with Synchrotron in situ X-ray tomography in order to understand the micro-mechanisms of crack initiation and propagation. The analysis of the 3D images reveals that internal shrinkage pores are responsible for t...

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Veröffentlicht in:Scripta materialia 2016-03, Vol.113, p.254-258
Hauptverfasser: Dezecot, Sebastien, Buffiere, Jean-Yves, Koster, Alain, Maurel, Vincent, Szmytka, Fabien, Charkaluk, Eric, Dahdah, Nora, El Bartali, Ahmed, Limodin, Nathalie, Witz, Jean-Francois
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum alloy
Crack initiation
Crack propagation
Cracks
Engineering Sciences
Fatigue
Fatigue failure
Fracture mechanics
High-temperature
Synchrotrons
Three dimensional
Tomography
X-rays
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Zusammenfassung:Fatigue tests were performed at 250°C on a cast AlSi7Cu3Mg aluminum alloy and monitored with Synchrotron in situ X-ray tomography in order to understand the micro-mechanisms of crack initiation and propagation. The analysis of the 3D images reveals that internal shrinkage pores are responsible for the main crack initiation. Crack propagation is mainly due to the complex and highly interconnected network of hard particles of the eutectic regions. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2015.11.017