... treatment refinery crude oil distillation unit pitting corrosion stress corrosion cracking chloride induced corrosion INTRODUCTION Ferritic, austenitic, and duplex grades are the most common commercially used stainless-steel families. All the three types of stainless steels have their own strengths...

... amounts of chromium (Cr) and molybdenum (Mo) exhibit superior pitting corrosion resistance compared to traditional CrMn-stainless steels used in drilling applications. Nevertheless, low-alloyed CrMn-stainless steels have been successfully used for decades in oil-based muds (OBM) as well as in alkaline...

... tests. critical pitting temperature Astm G150 CCS CO₂ pitting corrosion INTRODUCTION In an earlier study the authors applied electrochemical polarization to define the relative resistance to corrosion and pitting for common alloys used for tubing and wellhead equipment in the presence...

... welding (GTAW) method. The corrosion resistance of the weldments was evaluated by pitting corrosion testing and general corrosion testing in acidic environments. The mechanical properties were assessed in accordance with ASME section IX. Additionally, the microstructure of the weldments was examined...

...Abstract This study investigates the causes of premature pinhole leaks in a 6.4 Million Gallons per Day (MGD) water filtration plant that utilizes 304 stainless steel feed headers. The leaks, predominantly occurring around welds on the 8-inch headers, were found to result from pitting corrosion...

... corrosion products, but it also contained a small amount of soluble fluoride, chloride, nitrate, acetate, and sulfate that could have facilitated the corrosion process and increased the corrosivity of the water. One of the three encasement sections had the deepest and most severe pitting corrosion induced...

... the sea, salt deposits form on the tube and coupling surfaces, and seawater can enter inside the fitting and between tube and clamps. For 316L, this environment is generally too tough and will easily cause pitting corrosion on the tubes and crevice corrosion beneath clamps or inside fittings. In worst...

... electron microscopy. The straight pipe sections at both upstream and downstream locations looked pristine, while discoloring was observed at the two welds, in the heat-affected zone, and in nearby regions joining the elbow and straight pipes. There was no erosion, pitting corrosion, or flow-induced...

... at 90% of its SMYS. Alloy 17-4PH also corroded at a rate of 22.8 mpy (0.58 mm/yr.) in comparison to only 0.6 mpy (15.2 μm/yr.) for Alloy 925, with no CRA showing experiencing crevice corrosion. K-500 17-4Ph 925 sulfide-stress cracking environmentally-assisted cracking pitting corrosion weight-loss...

... on the HISC susceptibility of samples charged with hydrogen were also considered, and the results indicate that larger grains have a beneficial effect on the ductility. UNS N06625 CRA Hydrogen HISC Cold working Strain hardening Offshore Subsea Pitting Corrosion PRE SCL stepwise constant load...

... corrosion, a localized form of corrosion that causes cavities and structural failure in metallic materials. Although ultrasonic inspection techniques are effective in detecting uniform wall thinning, they have challenges in accurately identifying pitting corrosion. The present work proposes a technique...

... these materials are subjected to high halide-containing water-based drilling fluids at elevated temperatures. Consequently, pitting corrosion resistance becomes a crucial property to guarantee operational reliability and integrity of drilling equipment. Indeed, nickel-stabilized austenitic stainless steels...

... Method A was evaluated as a potential standardized test method for assessing sensitization and pitting corrosion resistance of CrNi-stainless steels used in drilling equipment. Results from ASTM G48 were also compared with results from more traditional quality assurance methods like Charpy V-notch impact...

... pitting corrosion crevice corrosion dynamic flow stagnant flow INTRODUCTION UNS S31600 is usually selected for pipes to be applied under conditions where cleanliness is an essential factor. As the lines around Sulfate Removal Unit (SRU) have this requirement (considering the membranes sensibility...

... that corrosion reactions for carbon and low alloy steels follow an energy activation Arrhenius law. For stainless steel grades, the positive influence of molybdenum was observed for highly acidic waste oils at high temperature. Uniform corrosion pitting corrosion carbon steel low alloy steel austenitic...

... and the need for quality control on inclusion type and size, especially with respect to pitting corrosion resistance in aggressive production environments and during acid treatment well interventions and stimulations. Sulfide Stress Cracking (SSC) pitting corrosion AISI 410 AISI 420 modified stainless...

...The corrosion rate data of the coupons sequentially exposed to GW and GW + N₂ electrolytes are listed in Table 3 , and the corrosion rate data of the coupons exposed to GW + N₂ electrolyte are listed in Table 4 . The average of the surface average and deepest pit corrosion...

... Equivalent number (PREN). For the environmental condition, the chloride concentration, temperature, and the water system's oxidation potential also influence the risk of pitting corrosion which, if raised, would increase the risk of pit initiation and propagation. This work aimed to develop a robust method...

... control of the double-shell tanks were developed based on statistically designed test matrices and data analysis driven by the failure of the primary liner of one tank, and they were implemented in 2019 to minimize the risk of both stress corrosion cracking and pitting corrosion. With the implementation...

... such as SEM following electrochemical testing resulting in some interfacial active-passive mechanisms. Alloys EIS Atmospheric corrosion Polarization Pitting corrosion INTRODUCTION Materials selection in the biomedical sector has become a critical area of research, and the care and treatment of patients...