A multiscale constitutive model for intergranular stress corrosion cracking in type 304 austenitic stainless steel
Siddiq, A and Rahimi, S (2013) A multiscale constitutive model for intergranular stress corrosion cracking in type 304 austenitic stainless steel. Journal of Physics Conference Series, 451 (confer). 012022. ISSN 1742-6596 (https://doi.org/10.1088/1742-6596/451/1/012022)
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Abstract
Intergranular stress corrosion cracking (IGSCC) is a fracture mechanism in sensitised austenitic stainless steels exposed to critical environments where the intergranular cracks extends along the network of connected susceptible grain boundaries. A constitutive model is presented to estimate the maximum intergranular crack growth by taking into consideration the materials mechanical properties and microstructure characters distribution. This constitutive model is constructed based on the assumption that each grain is a two phase material comprising of grain interior and grain boundary zone. The inherent micro-mechanisms active in the grain interior during IGSCC is based on crystal plasticity theory, while the grain boundary zone has been modelled by proposing a phenomenological constitutive model motivated from cohesive zone modelling approach. Overall, response of the representative volume is calculated by volume averaging of individual grain behaviour. Model is assessed by performing rigorous parametric studies, followed by validation and verification of the proposed constitutive model using representative volume element based FE simulations reported in the literature. In the last section, model application is demonstrated using intergranular stress corrosion cracking experiments which shows a good agreement.
ORCID iDs
Siddiq, A and Rahimi, S ORCID: https://orcid.org/0000-0001-6461-988X;-
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Item type: Article ID code: 44621 Dates: DateEvent17 July 2013PublishedSubjects: Technology > Engineering (General). Civil engineering (General) > Engineering design Department: Faculty of Engineering > Design, Manufacture and Engineering Management Depositing user: Pure Administrator Date deposited: 28 Aug 2013 10:29 Last modified: 31 Aug 2024 00:49 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/44621