| People | Locations | Statistics |
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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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Stevens, Nicholas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2021Corrosion Electrochemistry with a Segmented Array Bipolar Electrodecitations
- 2018Relationship Between the Inductive Response Observed During Electrochemical Impedance Measurements on Aluminium and Local Corrosion Processescitations
- 2017Finite Element Modelling to Investigate the Mechanisms of CRUD Deposition in PWRcitations
- 2012Laser surface modification using Inconel 617 machining swarf as coating materialcitations
- 2011Material-efficient laser cladding for corrosion resistance
- 2010Preliminary evaluation of digital image correlation for in-situ observation of low temperature atmospheric-induced chloride stress corrosion cracking in austenitic stainless steelscitations
- 2007Modelling intergranular stress corrosion cracking in simulated three-dimensional microstructurescitations
- 2006Grain Boundary Control for Improved Intergranular Stress Corrosion Cracking Resistance in Austenitic Stainless Steel: New Approachcitations
- 2006A three-dimensional computational model for intergranular crackingcitations
- 2006Three dimensional observations and modelling of intergranular stress corrosion cracking in austenitic stainless steelcitations
- 2006Grain boundary control for improved intergranular stress corrosion cracking resistance in austenitic stainless steels: new approach
- 2006Intergranular Stress Corrosion Crack Propagation in Sensitised Austenitic Stainless Steel (Microstructure Modelling and Experimental Observation)
- 2006Meso-mechanical model for intergranular stress corrosion cracking and implications for microstructure engineering
- 2006A two-dimensional mesoscale model for intergranular stress corrosion crack propagationcitations
- 2005The roles of microstructure and mechanics in intergranular stress corrosion cracking
- 2005Computational studies of intergranular stress corrosion crack propagation and the role of bridging ligaments
- 2005Microstructure engineering for improved intergranular stress corrosion cracking resistance of stainless steels
- 2005Microstructure engineering for improved intergranular stress corrosion cracking resistance of stainless steels
- 2005Three dimensional observations and modelling of intergranular stress corrosion cracking in austenitic stainless steel
Places of action
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conferencepaper
Computational studies of intergranular stress corrosion crack propagation and the role of bridging ligaments
Abstract
Previously reported high resolution X-ray tomographic observations of intergranular stress corrosion crack growth in sensitised austenitic stainless steel provided evidence that non-sensitised special grain boundaries form crack bridging ligaments along the crack surface. Two and three-dimensional meso-scale computational models of microstructure have been developed, both demonstrating that the phenomenon can be simulated and studied numerically. As 3D models have limitations in terms of computational power and time, full scale studies of the influence of the various model parameters, are reasonable on 2D models at present. A 2D computational model capable of mimicking the real 3D behaviour with crack bridging is presented and used as a simulation tool in this contribution. In terms of geometrical and physical description of the polycrystalline material, this model follows the framework of 2D percolation models used earlier. The material is described as an assembly of regular hexagonal cells, each of which substitutes one grain. The grain boundaries in the assembly are classified in a binary fashion as being either resistant or susceptible to corrosion. In mechanical terms these two types differ in their failure mode. The resistant boundaries are capable of developing inelastic deformations, while susceptible boundaries are assumed pre-oxidised and able to fail in a brittle manner. Crack propagation is a result of a sequence of grain boundaries failures decided from finite element calculations for equilibrium of the assembly with prescribed boundary conditions.Several experimentally determined fractions of resistant boundaries are considered. A number of random distributions of these in the assembly are studied. Results demonstrate crack propagation with branching and bridging comparable qualitatively to experimental observation. The influence of crack bridging on local crack driving force for various resistant boundaries fractions as well as susceptible and resistant boundaries strengths is presented and discussed.