In-Situ Observations of Intergranular Stress Corrosion Cracking

Digital Image ◽

Corrosion Cracking ◽

Image Correlation ◽

The development and validation of predictive models for intergranular stress corrosion cracking requires knowledge of short crack growth kinetics in response to mechanical driving forces. A new experimental method for in-situ observation of the early stages of crack growth during stress corrosion cracking, via full field Digital Image Correlation, is described and data for crack growth development are presented. Intergranular stress corrosion cracks were nucleated in sensitised 304 stainless steel under static uniaxial flexural deflection, within a potassium tetrathionate environment. High resolution optical images of a 2mm by 2mm area are recorded through the test solution during the experiment. The raw images show no observable cracking. However, the high sensitivity of digital image correlation allows small crack opening displacements to be detected. The derived strain map of the sample surface thereby enables imaging of the cracks. Surface cracks with lengths exceeding approximately 30μm can be observed. Post processing of the strain maps is then used to track the development of the cracks.

In Situ Investigation of Intergranular Stress Corrosion Cracking Initiation and Coalescence and Effects of Geometric and Microstructural Characteristics

CORROSION ◽

10.5006/2872 ◽

2018 ◽

Vol 74 (12) ◽

pp. 1385-1394

Author(s):

Danbi Song ◽

Sung Woo Kim ◽

Seong Sik Hwang ◽

Dong Jin Kim ◽

Chang Hee Lee

Keyword(s):

Stress Corrosion ◽

Corrosion Cracking ◽

Microstructural Characteristics ◽

In Situ Investigation ◽

The Minerals, Metals & Materials Series - Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors ◽

Multiple Cracks Interactions in Stress Corrosion Cracking: In Situ Observation by Digital Image Correlation and Phase Field Modeling

10.1007/978-3-030-04639-2_10 ◽

2017 ◽

pp. 161-174

Author(s):

J. Bolivar ◽

T.T. Nguyen ◽

Y. Shi ◽

M. Fregonese ◽

J. Réthoré ◽

...

Keyword(s):

Digital Image Correlation ◽

Digital Image ◽

Phase Field ◽

Corrosion Cracking ◽

Image Correlation ◽

Multiple Cracks ◽

In Situ Observation ◽

Phase Field Modeling

Investigation on nucleation of intergranular stress corrosion cracking in austenitic stainless steel by in situ strain measurement

Materials Science and Engineering A ◽

10.1016/j.msea.2019.138858 ◽

2020 ◽

Vol 773 ◽

pp. 138858

Author(s):

Tomoyuki Fujii ◽

Yoshikatsu Hisada ◽

Keiichiro Tohgo ◽

Yoshinobu Shimamura

Keyword(s):

Stainless Steel ◽

Austenitic Stainless Steel ◽

Stress Corrosion ◽

Strain Measurement ◽

Corrosion Cracking ◽

In Situ Strain Measurement ◽

Improvement of plant reliability based on combining of prediction and inspection of crack growth due to intergranular stress corrosion cracking

Nuclear Engineering and Design ◽

10.1016/j.nucengdes.2018.10.021 ◽

2019 ◽

Vol 341 ◽

pp. 112-123 ◽

Cited By ~ 2

Author(s):

Shunsuke Uchida ◽

Yasuhiro Chimi ◽

Shigeki Kasahara ◽

Satoshi Hanawa ◽

Hidetoshi Okada ◽

...

Keyword(s):

Stress Corrosion ◽

Crack Growth ◽

Corrosion Cracking ◽

Mechanistic Studies of Intergranular Stress Corrosion Cracking in Al-Mg Alloys under Atmospheric Exposure Conditions

CORROSION ◽

10.5006/2853 ◽

2018 ◽

Vol 74 (10) ◽

pp. 1117-1131 ◽

Cited By ~ 6

Author(s):

P.J. Steiner ◽

J.T. Burns

Keyword(s):

Stress Corrosion ◽

Crack Growth ◽

Growth Kinetics ◽

Close Correlation ◽

Open Circuit ◽

Corrosion Cracking ◽

Chemistry Development ◽

The effect of atmospheric environments on the intergranular stress corrosion cracking (IG-SCC) behavior of AA5083-H131 and AA5456-H116 was investigated using fracture mechanics-based testing, high-fidelity monitoring of crack growth kinetics, and electrochemical potential measurements. The IG-SCC susceptibility was found to decrease in atmospheric environments as compared to full immersion at −0.8 VSCE. Critically, the decrease in IG-SCC susceptibility was most prevalent for higher levels of sensitization and the more susceptible AA5083-H131 alloy. These results are analyzed in the context of a coupled anodic dissolution and H-embrittlement mechanism, wherein the reduction in IG-SCC susceptibility in the atmospheric environments results from cathodic limitation of the governing IG-SCC mechanism, leading to a decrease in the dissolution at the crack tip, a less aggressive crack chemistry development, and thus lower levels of H production. A close correlation between the open circuit potential of the bulk surface and the crack growth kinetics was observed for environments without a set potential, and correlates well with known potential-dependent IG-SCC observations.

In-situ observation of intergranular stress corrosion cracking in AA2024-T3 under constant load conditions

Corrosion Science ◽

10.1016/j.corsci.2006.05.013 ◽

2007 ◽

Vol 49 (1) ◽

pp. 139-148 ◽

Cited By ~ 36

Author(s):

Xiaodong Liu ◽

G.S. Frankel ◽

B. Zoofan ◽

S.I. Rokhlin

Keyword(s):

Stress Corrosion ◽

Constant Load ◽

Corrosion Cracking ◽

In Situ Observation ◽

Intergranular Stress Corrosion Cracking ◽

Load Conditions

The Minerals, Metals & Materials Series - Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors ◽

Multiple Cracks Interactions in Stress Corrosion Cracking: In Situ Observation by Digital Image Correlation and Phase Field Modeling

10.1007/978-3-319-67244-1_10 ◽

2017 ◽

pp. 161-174

Author(s):

J. Bolivar ◽

T.T. Nguyen ◽

Y. Shi ◽

M. Fregonese ◽

J. Réthoré ◽

...

Keyword(s):

Digital Image Correlation ◽

Digital Image ◽

Phase Field ◽

Corrosion Cracking ◽

Image Correlation ◽

Multiple Cracks ◽

In Situ Observation ◽

Phase Field Modeling

Intergranular stress corrosion cracking in simulated BWR water of 316L stainless steels manufactured with different procedures

Corrosion Science ◽

10.1016/j.corsci.2021.109344 ◽

2021 ◽

Vol 183 ◽

pp. 109344

Author(s):

Tingguang Liu ◽

Shuang Xia ◽

Tetsuo Shoji

Keyword(s):

Stress Corrosion ◽

Stainless Steels ◽

Corrosion Cracking ◽

Intergranular Stress Corrosion Cracking Damage Model: An Approach and Its Development for Alloy 600 in High-Purity Water

CORROSION ◽

10.5006/1.3584891 ◽

1986 ◽

Vol 42 (2) ◽

pp. 99-105 ◽

Cited By ~ 9

Author(s):

Y. S. Garud ◽

A. R. McIlree

Keyword(s):

Strain Rate ◽

Stress Corrosion ◽

High Purity ◽

Corrosion Cracking ◽

Model Parameters ◽

Alloy 600 ◽

Film Rupture ◽

Abstract A logical approach to quantitative modeling of intergranular stress corrosion cracking (IGSCC) is presented. The approach is based on the supposition (supported partly by experimental and field observations, and by a related plausible underlying mechanism) that strain rate is a key variable. The approach is illustrated for the specific case of NiCrFe Alloy 600 in high-purity water. Model parameters are determined based on the constant stress IGSCC data (between 290 and 365 C) assuming a power law relation between the damage and the nominal strain rate. The model may be interpreted in terms of a film rupture mechanism of the corrosion process. The related mechanistic considerations are examined for the specific case. Resulting calculations and stress as well as temperature dependence are shown to be in good agreement with the data. More data are needed for further verification under specific conditions of interest.