Stress corrosion cracking failure analysis of AISI 1018 carbon steel reinforcing bars in carbonated and chloride contaminated environment

Martin, Ulises; Bastidas, David M.

doi:10.1016/j.engfailanal.2023.107159

Cited by 20 publications

(7 citation statements)

References 62 publications

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“…UNS S31653 also developed microvoids and coalescence of dimples for the ductile fracture (see Figure 3b), nevertheless, for the brittle fracture, cracks inside the dimples were the predominant feature, besides the development of cleavage planes (see Figure 3e) [45]. Finally, UNS G10080 developed major areas of ductile overload areas, despite the absence of chlorides, where not only dimples were present but also cleavage facets (see Figure 3c) [30]. After the 0.4 wt.% Cl − addition, the SCC severely increased, promoting delamination and rupture of the cementite.…”

Section: Fractographic Studymentioning

confidence: 98%

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Integrity Assessment of Stress Corrosion Cracking Susceptibility of Duplex UNS S32205 and Austenitic UNS S31653 Stainless Steel Reinforcements

Martin,

Bastidas

2023

Metals

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Herein, the stress corrosion cracking (SCC) susceptibility of duplex (UNS S32205) and austenitic (UNS S31653) stainless steel (SS) reinforcements was evaluated using integrity assessment criteria. Mechanical properties were analyzed and compared by different SCC susceptibility factors. The integrity assessment was conducted applying Cosenza, Creazza, and Ortega ductility criteria, following three different standards (ACI 318-19, ASTM A615, and FIB). A conventional carbon steel (UNS G10080) reinforcement was also evaluated for comparative purposes, whose high residual stress value (>280 MPa) promoted a high corrosion growth rate. Duplex UNS S32205 SS grade showed a significant decrease in elongation, leading to failure after ductility assessment at high chloride concentrations. Fractographic analysis of both SS grades, duplex and austenitic, revealed less than 40% brittle areas at 8 wt.% Cl−, while UNS G10080 had over 85% at 4 wt.% Cl−.

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Section: Fractographic Studymentioning

confidence: 98%

“…However, a few studies are found on the SCC mechanisms of the steel reinforcement [27][28][29][30]. While it is less studied, SCC of the steel reinforcement causes a sudden brittle fracture, leading to a catastrophic failure without any previous sign of damage.…”

Section: Introductionmentioning

confidence: 99%

Integrity Assessment of Stress Corrosion Cracking Susceptibility of Duplex UNS S32205 and Austenitic UNS S31653 Stainless Steel Reinforcements

Martin,

Bastidas

2023

Metals

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“…Carbon steel is widely used in industries such as oil and gas, petrochemical, nuclear, cellulose, and civil construction, for application in pipes, reactors, storage tanks, and concrete reinforcement, due to its properties such as low hardenability, excellent forgeability and weldability, in addition to its low cost 1,2 . However, this steel has low corrosion resistance when exposed to corrosive environments, especially in the presence of chlorides 1,3 . Thus, methods such as pretreatments and corrosion inhibitors are needed to provide greater resistance against corrosion, anchoring of future coatings, and active protection in aggressive media 4,5 .…”

Section: Introductionmentioning

confidence: 99%

TEOS Silane Film Modified with SBA-15 Loaded with Cocoa Husk Extract as Pretreatment of ASTM 1008 Steel

Silva,

Carrijo-Gonçalves,

Barreto

et al. 2024

Mat. Res.

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Research on eco-friendly methods led to the investigation of natural inhibitors and silane films modified with nanostructured mesoporous silica (SBA-15), a molecular sieve that can carry molecules with inhibitory properties. Combining natural extracts such as cocoa husk with SBA-15 aims to develop an enhanced silane-based pretreatment. This involves obtaining an alcoholic extract, and then mixing it with SBA-15 to modify the silane film. Different concentrations (1%, 2%, and 3%) of SBA-15 loaded with extract were prepared. Electrochemical tests, especially electrochemical impedance spectroscopy (EIS), in a 0.1 mol/L NaCl solution, revealed improved corrosion resistance with the tetraethylorthosilane (TEOS) film modified using 3% SBA-15 loaded with extract. Scanning electron microscopy showed the film and SBA-15 on the steel surface, while Fourier transform infrared spectroscopy identified functional groups characteristic of SBA-15, pure or loaded, and silane film. Therefore, it was possible to enhance the TEOS silane film by adding SBA-15 loaded with plant residue extract.

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“…Steel offers important advantages over composites in a range of applications including ductility, reduced split cracking, ease of installation, speed of fabrication and placement and homogeneity. However, susceptibility to corrosion is a concern in exposed steel structures, which is pronounced by the high level of sustained stress experienced by various members of these structures in service (Li et al , 2013; Tavares et al , 2013; Fernandez, 2011; Arafin and Szpunar, 2009; Martin and Bastidas, 2023; Sun et al , 2023). Given the critical role of steel in the development of built infrastructure, potential corrosion-related damage to steel is of significant importance.…”

Section: Introductionmentioning

confidence: 99%

Development and experimental verification of innovative corrosion protection epoxy coatings for steel

Balachandra¹,

Nassar

Soroushian

2023

ACMM

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Purpose This study aims to report the development and experimental evaluation of three innovative corrosion-resistant modified epoxy coatings, namely, nanocomposite/toughened, self-healing and hybrid epoxy coatings, for application on steel substrates. Design/methodology/approach The corrosion resistance of these coatings was evaluated in a highly corrosive environment of salt fog spray for 2,500 h of exposure. Electrochemical impedance spectroscopy (EIS) measurements in sustained exposure to NaCl in a saturated Ca(OH)2 solution, rust creepage measurements at the location of scribe formed in the coatings and adhesion strength test were used to assess the performance of the innovative coatings. Commercially available marine-grade protective epoxy coatings were used as the reference coatings. Findings The test results showed that the modified epoxy coatings exhibited excellent corrosion resistance when exposed to an aggressive environment for extended periods. The EIS measurements, rust creepage measurements, pull-off strength and visual appearance of the aged modified–epoxy–coated specimens confirmed the enhanced corrosion resistance of the modified epoxy coatings. Originality/value Among the three types of modified coatings, the hybrid epoxy coating stands out to be the best performer.

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Stress corrosion cracking failure analysis of AISI 1018 carbon steel reinforcing bars in carbonated and chloride contaminated environment

Cited by 20 publications

References 62 publications

Integrity Assessment of Stress Corrosion Cracking Susceptibility of Duplex UNS S32205 and Austenitic UNS S31653 Stainless Steel Reinforcements

Integrity Assessment of Stress Corrosion Cracking Susceptibility of Duplex UNS S32205 and Austenitic UNS S31653 Stainless Steel Reinforcements

TEOS Silane Film Modified with SBA-15 Loaded with Cocoa Husk Extract as Pretreatment of ASTM 1008 Steel

Development and experimental verification of innovative corrosion protection epoxy coatings for steel

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