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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Winzer, N.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2014Industrially-relevant multiscale modelling of hydrogen assisted degradation
- 2014Intergranular stress corrosion crack propagation in rolled AZ31 Mg alloycitations
- 2014Development of a generalised understanding of environmentally-assisted degradation of magnesium-aluminium alloyscitations
- 2013In situ detection of hydrogen evolution during lubricated sliding contact
- 2011Stress Corrosion Cracking of Magnesium Alloyscitations
- 2011Corrosion and corrosion-fatigue of AZ31 magnesium weldmentscitations
- 2011Stress corrosion cracking (SCC) of magnesium alloyscitations
- 2011Stress corrosion cracking (SCC) of magnesium (Mg) alloyscitations
- 2010Stress corrosion cracking of gas-Tungsten arc welds in AZ31 magnesium alloy
- 2010Overview of stress corrosion cracking of magnesium alloys
- 2010Testing and Mesoscale Modelling of Hydrogen Assisted Cracking of Magnesiumcitations
- 2009The role of hydrogen in the stress corrosion cracking of Mg-Al alloys
- 2008Characterisation of stress corrosion cracking (SCC) of Mg-Al alloyscitations
- 2008Comparison of the linearly increasing stress test and the constant extension rate test in the evaluation of transgranular stress corrosion cracking of magnesiumcitations
- 2008Characterisation of stress corrosion cracking (SCC) of Mg–Al alloyscitations
- 2008A mechanistic understanding of stress corrosion cracking of Mg-Al alloys
- 2007Evaluation of the delayed hydride cracking mechanism for transgranular stress corrosion cracking of magnesium alloyscitations
- 2007Magnesium stress corrosion cracking
- 2007Stress corrosion cracking in magnesium alloys: Characterization and preventioncitations
- 2005A Critical Review of the Stress Corrosion Cracking (SCC) of Magnesium Alloyscitations
Places of action
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article
Evaluation of the delayed hydride cracking mechanism for transgranular stress corrosion cracking of magnesium alloys
Abstract
This paper evaluates the important elements of delayed hydride cracking (DHC) for transgranular stress corrosion cracking (TGSCC) of Mg alloys. A DHC model was formulated with the following components: (i) transient H diffusion towards the crack tip driven by stress and H concentration gradients; (ii) hydride precipitation when the H solvus is exceeded; and (iii) crack propagation through the extent of the hydride when it reaches a critical size of ~0.8 µm. The stress corrosion crack velocity, Vc, was calculated from the time for the hydride to reach the critical size. The model was implemented using a finite element script developed in MATLAB. The input parameters were chosen, based on the information available, to determine the highest possible value for Vc. Values for Vc of ~10-7 m/s were predicted by this DHC model. These predictions are consistent with measured values for Vc for Mg alloys in distilled water but cannot explain values for Vc of ~10-4 m/s measured in other aqueous environments. Insights for understanding Mg TGSCC are drawn. A key outcome is that the assumed initial condition for the DHC models is unlikely to be correct. During steady state stress corrosion crack propagation of Mg in aqueous solutions, a high dynamic hydrogen concentration would be expected to build up immediately behind the crack tip. Stress corrosion crack velocities ~ 10-4 m/s, typical for Mg alloys in aqueous solutions, might be predicted using a DHC model for Mg based on the time to reach a critical hydride size in steady state, with a significant residual hydrogen concentration from the previous crack advance step.