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Philosophical Magazine Volume 99, 2019 - Issue 9
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Part A: Materials Science

Cohesive zone modelling of anodic dissolution stress corrosion cracking induced by corrosion product films

Cunguang ChenInstitute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaCorrespondence[email protected]
ORCID Iconhttp://orcid.org/0000-0002-6525-228XView further author information
ORCID Icon,
Wenwen WangSchool of Mathematics and Physics, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaView further author information
,
Zhiliang ZhangDepartment of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, NorwayView further author information
,
Yanjing SuCorrosion and Protection Center, Key Laboratory for Environmental Fracture (MOE), University of Science and Technology Beijing, Beijing, People’s Republic of ChinaCorrespondence[email protected]
View further author information
&
Alex A. VolinskyDepartment of Mechanical Engineering, University of South Florida, Tampa, FL, USACorrespondence[email protected]
ORCID Iconhttp://orcid.org/0000-0002-8520-6248View further author information
ORCID Icon
Pages 1090-1102 | Received 26 Aug 2018, Accepted 21 Jan 2019, Published online: 06 Feb 2019
 
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ABSTRACT

Damage mechanics based on the cohesive zone model were applied to study the anodic dissolution stress corrosion cracking (SCC) in flat and U-shaped edge-notched specimens. The simulation results show that corrosion product films (CPFs) facilitate crack initiation in SCC due to the CPF-induced stress and CPF rupture. In the flat specimen, SCC susceptibility increases with the CPF thickness and CPF Young’s modulus, while it decreases with CPF fracture strength. For the U-shaped edge-notched specimen, the normalised threshold stress intensity factor KISCC/KIC decreases with the CPF thickness and notch depth.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [grant number 51571028]. AV acknowledges support from the National Science Foundation; Office of International Science and Engineering [grant number IRES 1358088].

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