... caused unstable crack extension to rapture the specimen. Based on the experimental results for the fissure formation and SSC, the effect of both APC and HE are discussed. Key words: sulfide stress cracking, four point bend test, stress groove, fissure, carbon steel, nickel, hydrogen embrittlement, active...

... to obtain martensite. Steel plates consisting of martensite were tempered to adjust the strength and hardness of the specimens. The tempering temperature of 0NI and 1NI steels were 480 and 500 °C, respectively, and both steel materials were held for 1 h and air cooled. In this study, the hardness of steel...

... 0.150 Mn 0.980 Si 0.324 P S Cu 0.005 0.0005 0.043 Ni 0.050 Cr 0.082 Mo 0.009 Al 0.034 Nb 0.006 Zr 0.001 V 0.001 Ti 0.001 Co B H N 0.005 0.0001 1.95 (1) 0.0034 (1) in ppm. The test specimens were machined from a 30 mm thick hot-rolled plate. The plate was austenitized at 920 °C for 30 minutes...

... Ability (VIA) test on a variety of non-steel specimens, including copper, brass, zinc, and aluminum. Key words: Organic coatings, Corrosion inhibitors, Corrosion tests, Packaging, Test methods, VCI INTRODUCTION Corrosion preventative packaging has been used in commercial, industrial, and military...

... was combined with a particle-sizing instrument. The experiments allowed for real-time evaluations of DOC excursions on the corrosion rates and concentration/size distribution of suspended particles. EXPERIMENTAL Test Specimens and Seawater Simulant Rotating cylinder electrode (RCE) specimens were fabricated...

... integrity mineral pipeline corrosion ph adjustment composition powder houston environment nace tm0177 method coupon ph 3 severity precipitation low alloy steel efc 16 failure 4 concentration specimen chloride Paper No. C2024-20732 MARCH 3-7, 2024 | NEW ORLEANS, LOUISIANA Naturally...

... 148.5 156.5 34.9 378.50 34.00 148.7 154.9 35.2 355.60 20.32 149.2 155.6 36.0 HRC Mid-wall 36.0 35.5 34.8 36.5 Internal 35.4 34.7 35.6 35.7 Slow Strain Rate Test (SSRT) SSRT for cathodically charged specimens was performed to clarify hydrogen embrittlement (HE) susceptibility of modified 0.9Mo alloy...

... is presented in Figure 7. The box has a ball spring loaded holder so the sample can be placed easily and will be fixed during the transfer and scanning with the microscope. This box also keeps the contamination inside preventing instrument contamination. Then each specimen inside the box is imaged using a Wide...

... steel 25Cr, because the test specimen is subjected to excessive plastic deformation. The objective of this paper is to explore capabilities of testing SSC and SCC with ripple slow strain rate testing (SSRT) or cyclic SSRT which can be considered an alternative and faster approach compared to NACE method...

... Assisted Cracking) and standard operating procedures based on the lab s experience. This test involves placing a small cylindrical carbon steel specimen under tension in a heated environment and submerged in solution extracted from insulation. The environment is simulated using an autoclave filled...

.... However, we considered that an Active Path Corrosion can be occurred under loaded stress portions. To replicate chloride-concentrated environments under insulation, a 70-day immersion test was conducted using U-bend type test specimens of carbon steel in a NaCl solution with the inhibitor. The tested...

... specimens. However, one out of twelve UNS N08535 specimens tested exhibited a crack at a location outside the inner roller of the four-point bend jig. The corrosion rates of UNS S39274, UNS N08535, and UNS © 2024 Association for Materials Protection and Performance (AMPP). All rights reserved. This work...

...-sectional specimens were cut from the cracked bonnet close to the crack for microstructural examination. The metallographic preparations included grinding and polishing using water-cooled silicon carbide papers and diamond pastes in the range of 15-3 µm. The examinations of the prepared specimens were made...

... in practice considering the high effusion rate of hydrogen from specimens after the exposure to the charging environment, especially in sour ones. An efficient tool is the hollow sensor that consists in the accumulation of hydrogen gas inside a cylinder exposed on the outside to a sour environment.6...

..., and 308 g/L Cl − at 363°F for 30 days. Neither cracking nor pitting was observed on any of the four-point or three-point bend specimens. In addition to four-point bend testing, slow strain rate tests were performed on UNS N07718 and UNS N09946 materials. Results of the slow strain rate test showed...

... the critical pitting temperature (CPT) by use of a modified ASTM G48 Method C test. Resistance to Hydrogen Embrittlement (HE) has been examined by use of stepwise loading of tensile specimens in a hydrogen charging environment in Cortest TM proof rings, followed by fractography characterization...

... on standard 4D specimens, ASTM E23 impact tests on Charpy-V-Notch specimens and ASTM E18 hardness tests.(8-10) Microstructure Characterization Microstructure of specimens machined near surface, mid radius and center of bar prolongations has been examined by light optical microscopy according to ASTM E112...

... and at the same time heal the damaged area itself. In this research, the experimental work includes boronic ester (BE) and polyurethane (PU) synthesis, BE-PU coating specimen preparation, characterization and performance analysis. BE was introduced in the polyurethane (PU) and applied as an additional coating...

... nd interstage cooler, two leaking tubes were identified and retrieved for metallurgical failure analysis. subsurface corrosion well integrity pipeline corrosion specimen metallurgy compressors engines and turbines flowline corrosion riser corrosion materials and corrosion exchanger...

... and characterize corrosion events in the inner-cans to determine the prevalence of corrosion features and the likelihood of a through-wall breach. This document presents a specimen where significant pitting corrosion and cracking was observed in and near the heat affected zone between the can and the lid...