... the mechanism of trench formation and SSC of nickel-containing steels. After SSRTs, the fracture surface of the specimens was evaluated, and a comprehensive characterization of the mean dimensional parameters of trenches and cracks found on the specimens’ cross sections was performed. The effect of the tensile...

...Dannisa R. Chalfoun; Mariano A. Kappes; Teresa E. Perez; José L. Otegui; Mariano Iannuzzi The nickel content in low alloy steels (LAS) for oil and gas exploration and production is limited to a maximum of 1 wt% according to ANSI/NACE MR 0175/ ISO 15156. This restriction is imposed to avoid sulfide...

.... STUDSVIK–Studsvik Nuclear AB, Nykoping, Sweden VII. SJTU–Shanghai Jiao-Tong University, Shanghai, China VIII. UJV–UJV Rez (a.s.), Czech Republic IX. VTT–VTT Technical Research Centre of Finland Ltd., Espoo, Finland X. CIEMAT–CIEMAT, Madrid, Spain alloy nickel stress corrosion...

...Arnaud Metsue; Abdelali Oudriss; Xavier Feaugas The aim of this study is a clarification of the thermodynamic and/or kinetic origin of superabundant vacancies formation in nickel exposed to hydrogen ingress. Here, first-principles calculations within density functional theory have been conducted...

...Hans Husby; Philip Wagstaff; Mariano Iannuzzi; Roy Johnsen; Mariano Kappes Nickel additions to low alloy steels improve mechanical and technological properties. However, Part 2 of ISO Standard 15156 limits the nickel content to a maximum of 1 wt% in oil and gas environments containing...

..., particularly in acidic solutions, to polarize the Alloy 22 well into the transpassive region, leading to the observed high-corrosion rates. Alloy 22 chromium Hastelloy C-22 hydrochloric acid molybdenum nickel Ni-Fe-Cr-Mo non-aqueous organic solvent quinone transpassivity Hastelloy Alloy C...

... boundary oxidation nickel pressurized water reactor stress corrosion cracking In pressurized water reactor (PWR) primary conditions, stress corrosion cracking (SCC) has occurred in Ni-based alloys used for steam generator tubes, pressurizers, vessel head penetrations, and reactor coolant systems...

... is provided, and the specific corrosion issues associated with each class of material highlighted. The classes of material considered for the storage and/or disposal of ILW and HLW/SF include copper, carbon steel and cast iron, stainless steels, titanium alloys, and nickel-based alloys. Sweden and Finland...

...-corrosion testing. TABLE 1 Composition and Operating Condition of the Electrodeposition Bath erosion-corrosion nickel polarization curve Erosion-corrosion is a common degradation of those materials applied in the two-phase fluid, especially oil-sand or saline-sand slurry. 1–3...

... of the film and increased its protectiveness. Nickel-based alloys are used widely in pressurized water reactors (PWR) as steam generator (SG) tubing materials because of their excellent corrosion resistance and high-temperature strength in aqueous environments. Despite their exceptional general...

...M.A. Amin; H. Shokry; E.M. Mabrouk The inhibition performance of three selected dihydrazide derivatives, namely, malonic acid (MAD), succinic acid (SAD), and adipic acid (AAD) dihydrazide, was tested in relation to nickel corrosion in 1.0 M sulfuric acid (H₂SO₄) solution...

...H. Hoffmeister In the author's recent work, effects of pH, chlorides, and sulfides on local anodic acidification has been modeled by coupling electrochemical polarization and phase precipitation inside occluded cells of nickel and iron. In the present work, the model is experimentally verified...

...S. Ju; Y. Zhang; D. Shang; F. Chen; Y. Wang; Y. Zhang The corrosion rates of two nickel-based alloys, Alloy 400 (UNS N04400) and Alloy C-276 (UNS N10276), and two stainless steels, Type 316L (UNS 31603) and Type 304 (UNS S30400), in a concentrated sodium hydroxide (NaOH) solution (45 mass...

... 625 tube served as a reaction vessel to test various nickel-based alloys in pH 2 solutions, it experienced operational (chemical, pressure, and thermal) cycles and its temperature in Table 1 is a time-weighted average from the 11 tests. The cross section of samples were characterized by using...

... of the residual stress on the SCC behavior of weld metals. ^10-11 However, there is very limited literature on the relationship between the residual stress and the PWSCC of the thick wall penetration nozzle of Alloy 600 (UNS N06600) ⁽¹⁾ in the PWR. Although nickel-based alloys...

...-mail: [email protected] . March 2010 6 2010 NACE International 2010 aluminum cobalt corrosion grain refinement grain size magnesium nickel steel texture Grain refinement, achieved through thermo-mechanical processing or cold work, improves mechanical properties...

... acid. Metals considered were iron, nickel, and copper. A second goal of this effort was to demonstrate that potential-pH diagram generation via a Web-based application is practical. Computer programs used to generate the potential-pH diagram to date have usually been written either for a single...

...R.B. Rebak Extensive testing has been performed at the Lawrence Livermore National Laboratory (LLNL, Livermore, California) to determine the corrosion characteristics of nickel-based alloys such as Alloy 22 (UNS N06022) and three titanium alloys. The studies focused on three major areas: immersion...

... transpassive dissolution, independent of chloride concentration. Figure 6 shows clearly the absence of crevice attack on Alloy 22 surface when R = 0.2 in a solution of chloride + nitrate. Alloy 22 crevice corrosion crevice pitting temperature nickel pitting inhibition repassivation potential...

... of interface area. This last effect is part of the Wagner model. ‡ Corresponding author. E-mail: [email protected] . July 2007 July 2008 NACE International 2008 Alloy 600 internal oxidation nickel noble metal oxidation percolation theory stress corrosion cracking...