A multiscale constitutive model for intergranular stress corrosion cracking in type 304 austenitic stainless steel

A Siddiq, S Rahimi

Research output: Contribution to journalArticle

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.
LanguageEnglish
Article number012022
Number of pages9
JournalJournal of Physics Conference Series
Volume451
Issue numberconference 1
DOIs
Publication statusPublished - 17 Jul 2013

Fingerprint

intergranular corrosion
stress corrosion cracking
austenitic stainless steels
Stress corrosion cracking
Austenitic stainless steel
Constitutive models
Grain boundaries
grain boundaries
cracks
Plasticity
Crack propagation
Cracks
plastic properties
Mechanical properties
Crystals
Microstructure
mechanical properties
microstructure
Experiments
estimates

Keywords

  • multiscale modelling
  • stress corrosion
  • fracture analysis
  • crystal plasticity theory
  • cohesive model

Cite this

@article{cc161f25a95643588717b7133d44947c,
title = "A multiscale constitutive model for intergranular stress corrosion cracking in type 304 austenitic stainless steel",
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.",
keywords = "multiscale modelling, stress corrosion, fracture analysis, crystal plasticity theory, cohesive model",
author = "A Siddiq and S Rahimi",
year = "2013",
month = "7",
day = "17",
doi = "10.1088/1742-6596/451/1/012022",
language = "English",
volume = "451",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
number = "conference 1",

}

A multiscale constitutive model for intergranular stress corrosion cracking in type 304 austenitic stainless steel. / Siddiq, A; Rahimi, S.

In: Journal of Physics Conference Series, Vol. 451, No. conference 1, 012022, 17.07.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A multiscale constitutive model for intergranular stress corrosion cracking in type 304 austenitic stainless steel

AU - Siddiq, A

AU - Rahimi, S

PY - 2013/7/17

Y1 - 2013/7/17

N2 - 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.

AB - 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.

KW - multiscale modelling

KW - stress corrosion

KW - fracture analysis

KW - crystal plasticity theory

KW - cohesive model

UR - http://www.scopus.com/inward/record.url?scp=84883069619&partnerID=8YFLogxK

UR - https://iopscience.iop.org/journal/1742-6596

U2 - 10.1088/1742-6596/451/1/012022

DO - 10.1088/1742-6596/451/1/012022

M3 - Article

VL - 451

JO - Journal of Physics: Conference Series

T2 - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - conference 1

M1 - 012022

ER -