High resolution X-ray tomography of micromechanisms of fatigue crack closure

Kern Hauw Khor (1) , Jean-Yves Buffiere (2) , Wolfgang Ludwig (2) , Ian Sinclair (1)

1 University of Southampton
2 MATEIS - Matériaux, ingénierie et science [Villeurbanne]

Fatigue crack closure has been studied in an aluminium alloy via microtomography. Gallium wetting has been used to visualise grain structure, along with electron backscattered diffraction assessment of grain orientations and crack trajectories. Through this synthesis of techniques, a detailed direct assessment of microstructure and closure micromechanisms has been achieved.

Mots clés: Fatigue; Closure; Crystallography; Slip band failure; Microtomography

Domaines: Mécanique des matériaux [physics.class-ph]

Kern Hauw Khor, Jean-Yves Buffiere, Wolfgang Ludwig, Ian Sinclair. High resolution X-ray tomography of micromechanisms of fatigue crack closure. Scripta Materialia, 2006, 55 (1), pp.47-50. ⟨10.1016/j.scriptamat.2006.01.016⟩. ⟨hal-00436213⟩