Phase field modelling of stress corrosion

Ståhle, Per; Hansen, Eskil

doi:10.1016/j.engfailanal.2014.07.025

Cited by 35 publications

(18 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the second case (C2), with shaper damage morphology, the maximal von Mises stress is observed about 320 MPa at crack tip, which is comparable with yield stress. This result confirms the shape of the The damage surfaces (crack edge) are extracted, showing the famous wavy-like shape as reported in the literature [52,53]. More interestingly, when the mechanical contribution is increased, the amplitude of this wave decreases, providing a shaper damage morphology.…”

Section: Experimental Procedures and Resultssupporting

confidence: 90%

A phase field method for modeling anodic dissolution induced stress corrosion crack propagation

et al. 2018

View full text Add to dashboard Cite

The phase field method is a powerful tool for studying microstructural evolution in various domains of material sciences, including phase change, initiation and propagation of fracture. In this work, a new formulation is developed based on the phase field method for modeling stress corrosion cracking (SCC) induced by anodic dissolution. This method was applied for modelling SCC of an aluminum alloy (2xxx series) in a saline medium (NaCl), which allows considering the effects of both electrochemical and mechanical processes. The classical phase transition model for material dissolution is coupled with the mechanical problem in a robust manner, providing an efficient tool for studying the competition between electrochemical and mechanical contributions to fracture. A numerical implementation based on finite elements is elaborated. The numerical results are compared to experimental data obtained by in situ microtomography.

show abstract

Section: Experimental Procedures and Resultssupporting

confidence: 90%

A phase field method for modeling anodic dissolution induced stress corrosion crack propagation

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The surfaces of these electrodes always become quite rougher to improve the utilization of electrochemically active materials. [ 57 ] The hydrophobicity of metal substrates is also turned to be more hydrophilic, which improves the absorption of water molecules on the catalyst surfaces. [ 58 ] Besides, the conductive metal substrates allow easy electron transfer to accelerate the catalytic reactions.…”

Section: Description Of Corrosion Engineeringmentioning

confidence: 99%

Transforming Damage into Benefit: Corrosion Engineering Enabled Electrocatalysts for Water Splitting

Liu

Gong

Deng

et al. 2020

Adv Funct Materials

View full text Add to dashboard Cite

Producing high‐purity hydrogen from water electrocatalysis is essential for the flourishing hydrogen energy economy. It is of critical importance to develop low‐cost yet efficient electrocatalysts to overcome the high activation barriers during water electrocatalysis. Among the various approaches of catalyst preparation, corrosion engineering that employs the autogenous corrosion reactions to achieve electrocatalysts has emerged as a burgeoning strategy over the past few years. Benefiting from the advantages of simple synthesis, effective regulation, easy scale‐up production, and extremely low cost, corrosion engineering converts the harmful corrosion process into the useful catalyst preparation, achieving the goal of “transforming damage into benefit.” Herein, the concept of corrosion engineering, fundamental reaction mechanisms, and affecting factors are firstly introduced. Then, recent progresses on corrosion engineering for fabricating electrocatalysts toward water splitting are summarized and discussed. Specific attentions are devoted to the formation mechanisms, catalytic performances, and structure–activity relations of these catalysts as well as the approaches employed for performance improvements. At last, the current challenges and future exploiting directions are proposed for achieving highly active and durable electrocatalysts. It is envisioned to shed light on the multidisciplinary corrosion engineering that is closely associated with corrosion and material science for energy and environmental applications.

show abstract

“…First proposed in the context of solidification and micro-structure evolution, phase field methods are finding ever-expanding applications (Biner, 2017), including areas such as fracture mechanics (Bourdin et al, 2000;Tanné et al, 2018;Hir-shikesh et al, 2019) or fatigue damage (Lo et al, 2019;Carrara et al, 2020;. Very recently, phase field models have been developed for environmentally-assisted material degradation, including the propagation of cracks assisted by hydrogen (Martínez-Pañeda et al, 2018;Anand et al, 2019;Wu et al, 2020) and the evolution of the aqueous electrolyte-metal interface due to material dissolution (Ståhle and Hansen, 2015;Mai et al, 2016;Mai and Soghrati, 2017;Toshniwal, 2019;Gao et al, 2020). In addition, recent works have coupled the concepts of phase field evolution due to fracture and material dissolution (Nguyen et al, 2017a(Nguyen et al, ,b, 2018.…”

Section: Introductionmentioning

confidence: 99%

A phase field formulation for dissolution-driven stress corrosion cracking

Cui

Martínez‐Pañeda

2021

Journal of the Mechanics and Physics of Solids

120

View full text Add to dashboard Cite

We present a new theoretical and numerical framework for modelling mechanicallyassisted corrosion in elastic-plastic solids. Both pitting and stress corrosion cracking (SCC) can be captured, as well as the pit-to-crack transition. Localised corrosion is assumed to be dissolution-driven and a formulation grounded upon the film rupture-dissolution-repassivation mechanism is presented to incorporate the influence of film passivation. The model incorporates, for the first time, the role of mechanical straining as the electrochemical driving force, accelerating corrosion kinetics. The computational complexities associated with tracking the evolving metal-electrolyte interface are resolved by making use of a phase field paradigm, enabling an accurate approximation of complex SCC morphologies. The coupled electro-chemomechanical formulation is numerically implemented using the finite element method and an implicit time integration scheme; displacements, phase field order parameter and concentration are the primary variables. Five case stud-* Corresponding author.

show abstract

Phase field modelling of stress corrosion

Cited by 35 publications

References 8 publications

A phase field method for modeling anodic dissolution induced stress corrosion crack propagation

A phase field method for modeling anodic dissolution induced stress corrosion crack propagation

Transforming Damage into Benefit: Corrosion Engineering Enabled Electrocatalysts for Water Splitting

A phase field formulation for dissolution-driven stress corrosion cracking

Contact Info

Product

Resources

About