NDLI: Towards Modelling Intergranular Stress-Corrosion Cracks Using Experimentally Obtained Grain Topologies

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Simonovski, I. Cizelj, L. Marrow, T. J. Fonseca, J. Quinta Da King, A.
Copyright Year	2009
Abstract	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.
Sponsorship	Pressure Vessels and Piping
Starting Page	543
Ending Page	550
Page Count	8
File Format	PDF
ISBN	9780791843666
DOI	10.1115/PVP2009-77883
e-ISBN	9780791838549
Volume Number	Volume 3: Design and Analysis
Conference Proceedings	ASME 2009 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2009-07-26
Publisher Place	Prague, Czech Republic
Access Restriction	Subscribed
Subject Keyword	Crystals Elasticity X-ray diffraction Fracture (materials) Stress corrosion cracking Wire Modeling Finite element model Anisotropy Stainless steel Plasticity Energy generation Damage
Content Type	Text
Resource Type	Article

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