Predicting the effects of material aging in view of development of intergranular damage is of particular importance in a number of nuclear installations and especially in structural integrity assessments of critical components in energy generating power plants. Since the damage is initialized on small length scales, detailed multiscale models should be employed to tackle the problem. However, the complexity of such models is high due to the need of incorporating microstructural features. In line of this the research group from Jozˇef Stefan Institute and The University of Manchester joined forces and knowledge in development of such detailed multiscale models. The basic idea was to pair the knowledge of advanced experimental techniques of The University of Manchester group with the knowledge of advanced microstructure modelling techniques of the group at Jozˇef Stefan Institute. The presented paper proposes a novel approach for intergranular crack modelling whereby a state-of-the-art X-ray diffraction contrast tomography technique is used to obtain 3D topologies and crystallographic orientations of individual grains in a stainless steel wire and intergranular stress corrosion cracks. As measured topologies and orientations of individual grains are then reconstructed within a finite element model and coupled with advanced constitutive material behaviour: anisotropic elasticity and crystal plasticity. Due to the extreme complexity of grain topologies, transferring this information into the finite element model presents a challenging task. The feasibility of the proposed approach is presented. Difficulties in building a finite element model are discussed. Preliminary results of the analyses are also given.
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ASME 2009 Pressure Vessels and Piping Conference
July 26–30, 2009
Prague, Czech Republic
Conference Sponsors:
- Pressure Vessels and Piping
ISBN:
978-0-7918-4366-6
PROCEEDINGS PAPER
Towards Modelling Intergranular Stress-Corrosion Cracks Using Experimentally Obtained Grain Topologies
I. Simonovski,
I. Simonovski
Jozˇef Stefan Institute, Ljubljana, Slovenia
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L. Cizelj,
L. Cizelj
Jozˇef Stefan Institute, Ljubljana, Slovenia
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T. J. Marrow,
T. J. Marrow
The University of Manchester, Manchester, Manchester, UK
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J. Quinta da Fonseca,
J. Quinta da Fonseca
The University of Manchester, Manchester, Manchester, UK
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A. King
A. King
The University of Manchester, Manchester, Manchester, UK
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I. Simonovski
Jozˇef Stefan Institute, Ljubljana, Slovenia
L. Cizelj
Jozˇef Stefan Institute, Ljubljana, Slovenia
T. J. Marrow
The University of Manchester, Manchester, Manchester, UK
J. Quinta da Fonseca
The University of Manchester, Manchester, Manchester, UK
A. King
The University of Manchester, Manchester, Manchester, UK
Paper No:
PVP2009-77883, pp. 543-550; 8 pages
Published Online:
July 9, 2010
Citation
Simonovski, I, Cizelj, L, Marrow, TJ, Quinta da Fonseca, J, & King, A. "Towards Modelling Intergranular Stress-Corrosion Cracks Using Experimentally Obtained Grain Topologies." Proceedings of the ASME 2009 Pressure Vessels and Piping Conference. Volume 3: Design and Analysis. Prague, Czech Republic. July 26–30, 2009. pp. 543-550. ASME. https://doi.org/10.1115/PVP2009-77883
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