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Crack behaviour in zinc coating and at the interface zinc-hot galvanised TRIP steel 800

Abstract : In the present work, two paths of crack propagation in the bimaterial structure of zinc-TRIP steel 800 were investigated. Abaqus numerical simulation and singular integral equation method were used for the estimation of the crack behaviour at the interface. It was found that the energy release rate decreases as soon as the crack approaches the interface and increases when crossing it. The computation of the strain energies of deflection and penetration obtained from elastic modelling showed that the crack is more prone to deflect into the interface rather than to penetrate it. The same behaviour was supported by the volumetric approach results. Finally, analytical and numerical findings were in a good agreement with microscopic examination obtained from SEM observations.
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https://hal.univ-lorraine.fr/hal-01500820
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Submitted on : Monday, April 3, 2017 - 4:56:29 PM
Last modification on : Wednesday, March 24, 2021 - 10:32:02 AM

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A. Chamat, S. Aden-Ali, J. Gilgert, E. Petit, K. Nasri, et al.. Crack behaviour in zinc coating and at the interface zinc-hot galvanised TRIP steel 800. Engineering Fracture Mechanics, Elsevier, 2013, 114, pp.12-25. ⟨10.1016/j.engfracmech.2013.09.012⟩. ⟨hal-01500820⟩

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